Subaru1998–2020 Critical issues documented

Subaru Liberty BL: common faults & what to check

The BL is the Subaru Liberty built 2003–2010. It was sold here with the 2.0L petrol (EJ20) and 3.0L petrol (EZ30). Of the 38 faults documented for the Liberty, 16 apply to this generation, each with its symptoms, what to inspect and a typical repair cost. Free, no account needed.

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Documented faults

Critical

Most serious

$600–$2,000

Typical repair

Service milestones

You're looking at the BL

2 engine variants are documented for this generation. Pick yours to narrow further, or keep reading for the generation as a whole.

Subaru Liberty, BL (2003–2010) (KickTyres illustration)

2003–2010BL Selected2003–2010BL2.0L petrol (EJ20)PetrolDocumented issues12 knownSee faults & what to checkKickTyres illustration, not a photograph.

2003–2010BL Selected2003–2010BL3.0L petrol (EZ30)PetrolDocumented issues10 knownSee faults & what to checkKickTyres illustration, not a photograph.

Choose a different generation

Now narrow it to the engine

A 1.8 and a 2.4 of the same car do not fail the same way, so the faults below narrow to the engine as well as the year. Free, no account needed.

Which engine is in it?

2.0L petrol (EJ20)· 2.0 litre petrol 3.0L petrol (EZ30)· 3.0 litre petrol

A 2005 Subaru Liberty is the BL generation (2003 to 2010).

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Subaru Liberty · 2005

Narrowed to the year. No engine is recorded for this vehicle. Pick an engine to see which faults apply.

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matched on year only

What to look out for

The checks worth doing on a Subaru Liberty before you hand over any money. Every documented fault is listed below, each with its own page.

Costly issue
Look for cracked or extruded rubber at the bush faces.
See why
BL/BP Rear Lateral Arm Bush Wear and Geometry Drift
The BL/BP Legacy uses a multi-link rear suspension with four lateral control arms per side. The inner pivot bushes on these arms — particularly the front lateral arm and the toe-control arm — are made from a relatively soft rubber compound that deteriorates with age and mileage. As the bushes deflect and crack, rear wheel alignment shifts dynamically during cornering and braking. The car develops a characteristic nervousness at highway speed and the rear end feels loose on direction changes. Tyre wear on the inner or outer shoulder follows. Because NZ-market cars are now 15–22 years old, virtually every unrestored BL/BP will have worn rear bushes to some degree. Replacement with original-specification or polyurethane bushes requires a full rear alignment afterwards.
What you would notice
- Rear-end vagueness or tramping sensation at highway speeds above 90 km/h
- Knocking or clunking from the rear suspension over sharp bumps or rough road
- Uneven inner or outer rear tyre shoulder wear despite recent alignment
- Car feels like it has a 'loose' rear end when changing lanes quickly
Typically $600–$1,800 to put right.
Costly issue
Any play in the vertical axis indicates ball joint wear.
See why
Front Knuckle Lower Ball Joint Failure
The front lower ball joint, which connects the lower control arm to the front steering knuckle, is a known wear item on BP and BR Liberty and Outback models that progresses to a safety-critical failure mode. The ball joint boot deteriorates allowing grease loss and water ingress, leading to accelerated wear of the ball and socket. As wear progresses the joint develops play, causing clunking over bumps. In advanced cases the joint can collapse, resulting in sudden loss of steering and wheel pull-under — a dangerous failure mode. On NZ roads with potholes and gravel surfaces, wear is accelerated. The joint is not individually serviceable on many sub-models and requires knuckle or arm replacement.
What you would notice
- Clunking noise from front suspension over bumps, dips, or turning
- Vague or wandering steering feel
- Uneven or accelerated front tyre wear
- Knock felt through floor or steering wheel on rough surfaces
- Vehicle pulling to one side under braking
Typically $420–$1,100 to put right.
Costly issue
Watch for: Gear oil smell from the rear of the vehicle, particularly after a highway run.
See why
Rear Differential Pinion and Side Seal Oil Leak
The rear differential on AWD Legacy BP/BL models is prone to oil leaks from the rear pinion seal and the inner side seals where the rear driveshafts enter the differential housing. The seals degrade from heat cycling, age, and contamination from road grime that abrades the sealing lip against the rotating shaft. Gear oil loss from the rear differential reduces lubrication of the ring and pinion gears and viscous coupling components, leading to increased wear and — if the leak is large and undetected — differential failure, which is a major repair.
What you would notice
- Gear oil smell from the rear of the vehicle, particularly after a highway run
- Oily residue or darkened grime accumulation on the rear differential housing or rear subframe members
- Low rear differential fluid level on inspection
- Oil drip spots visible on the ground beneath the centre-rear of the vehicle
Typically $400–$900 to put right.
Costly issue
Rock the wheel at top and bottom to detect axial play.
See why
Rear wheel bearing premature wear
Rear wheel bearings on BP/BL Legacy wear prematurely, particularly on AWD variants that see mixed-surface or rural driving. Hub-integrated rear bearings are pressed units requiring specialist tooling to replace. Failure is often gradual but can progress to dangerous play if ignored. Common at 100,000 to 180,000 km in NZ and AU conditions.
What you would notice
- Droning or humming noise that changes pitch with vehicle speed
- Noise increases on one side when cornering due to load shift
- Vibration felt through seat or floor at highway speeds
- Detectable play when rocking the wheel at 12 and 6 o'clock with the car raised
Typically $380–$680 to put right.
Costly issue
Inspect all CV boot surfaces for cracking, splitting, or collapse.
See why
Front and Rear CV Joint Boot Cracking and Grease Loss
The constant velocity (CV) joint boots on the BP/BL Legacy are rubber bellows that retain grease within the CV joint and exclude road contamination. The rubber compounds used degrade with age, ozone exposure, and heat from the exhaust on inner boots, causing them to crack and split. Once the boot is breached, grease is expelled centrifugally and replaced by water and road grit, which rapidly abrades the CV joint ball races and cage, leading to joint failure. On AWD Legacy models this affects all four corners of the drivetrain.
What you would notice
- Grease flung onto the inside of the wheel arch liner or onto suspension components
- Clicking or knocking sound from the front wheels during tight slow-speed turns indicating CV joint wear after grease loss
- Visible cracking, tearing, or collapsed rubber on the CV boot surface
- Vibration through the steering wheel or floorboard at speed indicating an unbalanced or damaged CV joint
Typically $200–$600 to put right.
Costly issue
Watch for: Vehicle pulling to one side under moderate or heavy braking.
See why
Brake Caliper Guide Pin Seizure
The sliding brake calipers on the BP/BL Legacy depend on lubricated guide pins to allow the caliper body to float and apply even pressure across both brake pad faces. Corrosion and contamination of the guide pin bores — accelerated in New Zealand's wet climate and coastal environments — causes the pins to seize, preventing the caliper from retracting after brake application. A seized guide pin results in one brake pad dragging permanently against the disc, causing rapid and uneven pad and disc wear, excessive brake heat, and a pull to one side under braking.
What you would notice
- Vehicle pulling to one side under moderate or heavy braking
- Significantly uneven brake pad wear between inner and outer pads on the same caliper
- Excessive heat from one wheel after normal driving, detectable by hub temperature differential
- Brake drag or a feeling of resistance when the vehicle should be coasting freely
Typically $200–$550 to put right.

Subaru Liberty service schedule

The 3 engines a 2005 Subaru Liberty was sold with, each with its own intervals. Pick your engine above to narrow this to one. These are the model’s intervals — the car’s own service book is the only thing that can tell you what has actually been done to it.

Fourth Generation · 2003–2009 · 2.0L (EJ20) - 2.0i/2.0R

Petrol

Due by distance

100,000 km
The first timing belt service falls at this interval, so check the paperwork records it.
150,000 km
Suspension bushings and struts often start to feel naturally tired by now.
200,000 km
Cooling parts such as the radiator and hoses are worth assessing before they cause trouble.

Fourth Generation · 2003–2009 · 2.5L (EJ25) - 2.5i/Premium

Petrol

Due by distance

100,000 km
A major service is due, covering the timing belt, water pump and tensioner, all critical on the EJ25 engine.
150,000 km
Flush the cooling system and check the suspension bushings and struts, which commonly show wear around this mark.
200,000 km
Evaluate the radiator and any auxiliary drive belts that may have gone brittle.

Fourth Generation · 2003–2009 · 3.0L (EZ30) - 3.0R/Spec.B

Petrol

Due by distance

150,000 km
Inspect the suspension bushings and shock absorbers for signs of wear.
200,000 km
Check the accessory drive belts and tensioners for any deterioration.
250,000 km
Make sure the cooling system hoses have been renewed so the engine stays in good shape.

See all 16 issues for this oneDocumented for the exact year and engine you picked, including 3 rated critical.

Body, brakes, suspension & interior6

01BL/BP Wagon Tailgate Hinge Mounting Point Rust

The BL/BP Legacy wagon (Outback excepted) has a known corrosion point where the tailgate hinge bracket meets the body pillar.2003–2009Body & Rust$800–$2,800

CommonBody & Rust $800–$2,800 to fix

The BL/BP Legacy wagon (Outback excepted) has a known corrosion point where the tailgate hinge bracket meets the body pillar. Water infiltrates behind the inner body panel at the upper hinge location, sits against the uncoated steel, and initiates rust from the inside out. By the time rust bubbles are visible on the paint surface the corrosion is usually significant. Affected vehicles show the hinge pulling away from the pillar or the tailgate sitting misaligned. In severe cases the hinge tears through the rusted panel entirely. The repair requires cutting out the corroded section and welding in new steel, which is disproportionately expensive relative to the car's value. NZ's coastal and wet-weather conditions accelerate the process.

Symptoms to notice

Paint bubbling or rust blister visible around the upper tailgate hinge brackets on the body pillar
Tailgate sitting misaligned or dropping on one side when opened, indicating hinge pulling away from weakened metal
Creaking or groaning from the tailgate hinge area when opening or closing
Visible gap between the hinge plate and body panel as rust causes the mounting point to delaminate

What to check

Open the tailgate fully and inspect the upper hinge bracket mounting area on both sides of the D-pillar for paint bubbling, rust staining, or any cracking of the paint.
Press firmly around the hinge area — any give in the panel suggests rust perforation behind the paint.
Check the tailgate alignment when closed (even gaps all around).
Look inside the boot at the upper corners where the tailgate hinges attach for any discolouration or rust staining on the inner trim.

Where to look: Upper tailgate hinge mounting points on the D-pillar/body side, both upper hinge locations — wagon body style only

Parts involved: Body corrosion.

Ask the seller

“Has the tailgate area ever been inspected for rust by a panel shop?”
“Does the tailgate close evenly with consistent gaps on both sides?”
“Has the car spent time near the coast or in a high-rainfall area?”

02BL/BP Rear Lateral Arm Bush Wear and Geometry Drift

Look for cracked or extruded rubber at the bush faces.2003–2009Suspension$600–$1,800

Very commonSuspension $600–$1,800 to fix

The BL/BP Legacy uses a multi-link rear suspension with four lateral control arms per side. The inner pivot bushes on these arms — particularly the front lateral arm and the toe-control arm — are made from a relatively soft rubber compound that deteriorates with age and mileage. As the bushes deflect and crack, rear wheel alignment shifts dynamically during cornering and braking. The car develops a characteristic nervousness at highway speed and the rear end feels loose on direction changes. Tyre wear on the inner or outer shoulder follows. Because NZ-market cars are now 15–22 years old, virtually every unrestored BL/BP will have worn rear bushes to some degree. Replacement with original-specification or polyurethane bushes requires a full rear alignment afterwards.

Symptoms to notice

Rear-end vagueness or tramping sensation at highway speeds above 90 km/h
Knocking or clunking from the rear suspension over sharp bumps or rough road
Uneven inner or outer rear tyre shoulder wear despite recent alignment
Car feels like it has a 'loose' rear end when changing lanes quickly

What to check

Look for cracked or extruded rubber at the bush faces.
On the road test, note any vagueness or darting at 90–100 km/h.
Check rear tyre wear pattern for uneven shoulder wear.
Get a 4-wheel alignment printout — rear toe or camber outside specification is a red flag.
If a workshop inspection is possible: Lift the car on a hoist and physically grab each rear lateral arm to check for play or deflection at the inner bush.

Where to look: Rear multi-link suspension: inner pivot bushes of front lateral arm and toe-control arm, both sides

Ask the seller

“Has the rear suspension ever had bush replacements or been inspected by a workshop?”
“Does the car have a recent 4-wheel alignment printout?”
“Does the car feel stable and settled at 100 km/h on the open road?”

03Front Knuckle Lower Ball Joint Failure

Any play in the vertical axis indicates ball joint wear.petrol2003–2014Suspension$420–$1,100Read the full fault: symptoms, where to look, what to ask the seller

04Rear wheel bearing premature wear

Rock the wheel at top and bottom to detect axial play.petrol2003–2009Suspension$380–$680

CommonSuspension $380–$680 to fix

Rear wheel bearings on BP/BL Legacy wear prematurely, particularly on AWD variants that see mixed-surface or rural driving. Hub-integrated rear bearings are pressed units requiring specialist tooling to replace. Failure is often gradual but can progress to dangerous play if ignored. Common at 100,000 to 180,000 km in NZ and AU conditions.

Symptoms to notice

Droning or humming noise that changes pitch with vehicle speed
Noise increases on one side when cornering due to load shift
Vibration felt through seat or floor at highway speeds
Detectable play when rocking the wheel at 12 and 6 o'clock with the car raised

What to check

Rock the wheel at top and bottom to detect axial play. Perform a road test listening for a drone that changes when lane-changing. Check for any wheel wobble at speed. If a workshop inspection is possible: Raise each rear corner on a jack stand and rotate the wheel by hand, feeling and listening for roughness or grinding.

Where to look: Rear hub and bearing assembly, left and right sides

Parts involved: Wheel bearing.

Ask the seller

“Have the rear wheel bearings ever been replaced or inspected?”
“Has any humming or droning noise been noticed at highway speed?”
“What is the current odometer reading and is service history complete?”

05Front and Rear CV Joint Boot Cracking and Grease Loss

Inspect all CV boot surfaces for cracking, splitting, or collapse.2003–2009Suspension$200–$600

CommonSuspension $200–$600 to fix

The constant velocity (CV) joint boots on the BP/BL Legacy are rubber bellows that retain grease within the CV joint and exclude road contamination. The rubber compounds used degrade with age, ozone exposure, and heat from the exhaust on inner boots, causing them to crack and split. Once the boot is breached, grease is expelled centrifugally and replaced by water and road grit, which rapidly abrades the CV joint ball races and cage, leading to joint failure. On AWD Legacy models this affects all four corners of the drivetrain.

Symptoms to notice

Grease flung onto the inside of the wheel arch liner or onto suspension components
Clicking or knocking sound from the front wheels during tight slow-speed turns indicating CV joint wear after grease loss
Visible cracking, tearing, or collapsed rubber on the CV boot surface
Vibration through the steering wheel or floorboard at speed indicating an unbalanced or damaged CV joint

What to check

Inspect all CV boot surfaces for cracking, splitting, or collapse; look for grease flung onto surrounding suspension components or inside the wheel arch; rotate the driveshaft slowly by hand and check for grease tracks; on the inner boots check the area near the differential output for grease streaking; listen for clicking from front CV joints during tight-radius turns as a sign of advanced joint wear following boot failure.

Where to look: CV joint boots at both inner and outer ends of the front driveshafts, and outer CV joints on the rear driveshafts — eight boots total on AWD models

Parts involved: CV joint and boot.

Ask the seller

“Have the CV boots been inspected recently, and have any been replaced?”
“Is there any clicking sound when turning at low speed?”
“Has the vehicle had a WoF issued recently, and did it note any CV boot condition?”

06Brake Caliper Guide Pin Seizure

Watch for: Vehicle pulling to one side under moderate or heavy braking.2003–2009Brakes$200–$550

CommonBrakes $200–$550 to fix

The sliding brake calipers on the BP/BL Legacy depend on lubricated guide pins to allow the caliper body to float and apply even pressure across both brake pad faces. Corrosion and contamination of the guide pin bores — accelerated in New Zealand's wet climate and coastal environments — causes the pins to seize, preventing the caliper from retracting after brake application. A seized guide pin results in one brake pad dragging permanently against the disc, causing rapid and uneven pad and disc wear, excessive brake heat, and a pull to one side under braking.

Symptoms to notice

Vehicle pulling to one side under moderate or heavy braking
Significantly uneven brake pad wear between inner and outer pads on the same caliper
Excessive heat from one wheel after normal driving, detectable by hub temperature differential
Brake drag or a feeling of resistance when the vehicle should be coasting freely

What to check

Watch for: Vehicle pulling to one side under moderate or heavy braking. If a workshop inspection is possible: With the vehicle on a hoist, attempt to slide the caliper body by hand along its guide pins after removing the wheel — it should move freely with light hand pressure; inspect the guide pin rubber boots for cracking or splitting which allows water ingress; compare pad thickness between the inner and outboard pads on each caliper — uneven wear indicates a seized pin; after a test drive, compare wheel hub temperature across axles by touch to identify a dragging caliper.

Where to look: Brake caliper guide pin bolts and bores on the front and rear sliding calipers, located on the inner and outer faces of the caliper bracket at each wheel

Parts involved: Brake disc and pads.

Ask the seller

“When were the brakes last serviced, and were the caliper guide pins cleaned and greased?”
“Has the vehicle ever pulled to one side during braking?”
“Has uneven brake pad wear been noted at any recent service?”

Fluid leaks1

07Rear Differential Pinion and Side Seal Oil Leak

Watch for: Gear oil smell from the rear of the vehicle, particularly after a highway run.2003–2009Fluid Leaks$400–$900

CommonFluid Leaks $400–$900 to fix

The rear differential on AWD Legacy BP/BL models is prone to oil leaks from the rear pinion seal and the inner side seals where the rear driveshafts enter the differential housing. The seals degrade from heat cycling, age, and contamination from road grime that abrades the sealing lip against the rotating shaft. Gear oil loss from the rear differential reduces lubrication of the ring and pinion gears and viscous coupling components, leading to increased wear and — if the leak is large and undetected — differential failure, which is a major repair.

Symptoms to notice

Gear oil smell from the rear of the vehicle, particularly after a highway run
Oily residue or darkened grime accumulation on the rear differential housing or rear subframe members
Low rear differential fluid level on inspection
Oil drip spots visible on the ground beneath the centre-rear of the vehicle

What to check

Watch for: Gear oil smell from the rear of the vehicle, particularly after a highway run. If a workshop inspection is possible: Raise the vehicle and inspect the rear differential housing for oil film or accumulated grime soaked with gear oil; check the propeller shaft flange face for oil tracking; check both inner CV joint areas at the differential outputs; with a torch inspect the differential drain plug area and housing seams; check differential oil level via the fill plug.

Where to look: Rear differential housing: pinion input seal at the front face where the propeller shaft connects, and side output seals where the rear half-shafts exit

Parts involved: Differential.

Ask the seller

“Has the rear differential fluid ever been replaced or inspected?”
“Has any oil leak been identified at the rear of the vehicle?”
“Has the rear differential ever been serviced or had seals replaced?”

Depends on the exact engine — 9 moreDocumented for a specific engine we could not confirm from what you picked. Check the engine code on the car.

Engine, transmission & cooling8

01EJ255 turbo piston ringland cracking

Check for blue smoke under hard acceleration.petrol2003–2009EngineCan't confirm for this car$4,000–$9,000

CommonEngine $4,000–$9,000 to fix

Can't confirm for this car

The turbocharged EJ255 fitted to the Legacy GT (BP generation) is prone to piston ringland cracking, the same well-documented failure mode seen in WRX and Forester XT of the same era. Ringlands crack when the engine is run on low-octane fuel, allowed to detonate, or pushed hard without proper warm-up. Once a ringland breaks, oil consumption spikes, compression drops and blue smoke is produced under load, typically requiring short-block replacement or a full rebuild.

Symptoms to notice

Sudden increase in oil consumption exceeding 1 litre per 2000 km
Blue smoke on hard acceleration or overrun
Rough idle and misfire on the cylinder with the damaged ringland
Loss of power and poor throttle response
Low compression reading on one or more cylinders

What to check

Check for blue smoke under hard acceleration.
Review oil consumption history.
Inspect the air filter and intercooler piping for oil contamination.
Confirm whether 98-octane fuel has always been used.
If a workshop inspection is possible: Perform a compression test across all four cylinders — values should be within 10% of each other and above 150 psi.

Where to look: Pistons within the EJ255 turbocharged engine block

Parts involved: Turbocharger.

Ask the seller

“What octane fuel has been used consistently?”
“Has the car ever been tuned or had an aftermarket ECU map applied?”
“What is the current oil consumption rate between changes?”

02EJ25 Oil Cooler Adapter Housing Crack

Inspect the oil cooler adapter housing at the side of the block for staining, seepage, or cracks.petrol2003–2009CoolingCan't confirm for this car$500–$1,600

OccasionalCooling $500–$1,600 to fix

Can't confirm for this car

The oil cooler adapter housing on the EJ25 engine, which routes engine oil through the coolant-fed oil cooler, is known to develop internal cracks. When the housing cracks, coolant and engine oil mix under pressure, contaminating both circuits. This is distinct from the head gasket failure mode but produces similar symptoms of milky oil and coolant contamination. The adapter is a cast aluminium or cast iron component that fatigues from thermal cycling and pressure differentials. It is sometimes misdiagnosed as a head gasket failure, leading to unnecessary expensive head gasket repairs that do not resolve the root cause. The housing itself is relatively inexpensive but access requires significant disassembly.

Symptoms to notice

Milky or emulsified oil on dipstick despite no head gasket history
Coolant reservoir showing oil contamination or brown sludge
Oil pressure fluctuations if coolant enters the oil circuit at volume
Recurrence of milky oil after a head gasket replacement that did not fix it
Visible oil and coolant mixing when oil cooler lines are inspected

What to check

Inspect the oil cooler adapter housing at the side of the block for staining, seepage, or cracks. Check for coolant discolouration suggesting oil intrusion. The adapter housing is located at the oil filter mounting area on the side of the block — inspect with a torch for weeping or discolouration. If a workshop inspection is possible: If milky oil is present but head gaskets are confirmed good, specifically pressure-test the oil cooler circuit.

Where to look: Side of EJ25 engine block, oil cooler adapter housing at the oil filter base

Parts involved: Differential, Head gasket.

Ask the seller

“Has the car had milky oil that was not resolved by a head gasket repair?”
“Has the oil cooler adapter housing ever been inspected or replaced?”
“Has coolant ever needed repeated replacement due to contamination?”

03EJ25/EJ20 Timing Belt and Water Pump Catastrophic Failure Risk

Confirm engine variant is EJ or FB before assessing risk.petrol2003–2014EngineCan't confirm for this car$750–$1,600Read the full fault: symptoms, where to look, what to ask the seller

04EZ30 H6 timing chain tensioner failure

Cold-start the engine and immediately listen for chain rattle from the front of the engine.petrol2003–2009EngineCan't confirm for this car$1,600–$2,900

OccasionalEngine $1,600–$2,900 to fix

Can't confirm for this car

The 3.0-litre EZ30 flat-six engine fitted to Legacy 3.0R models uses a multi-stage timing chain with hydraulic tensioners that can lose pressure on cold start or at high mileage, allowing chain rattle until oil pressure builds. Worn tensioners permit sufficient chain slack to jump a tooth, resulting in timing misalignment and potential engine damage. Repair is labour-intensive given the H6 packaging, requiring significant front-end disassembly.

Symptoms to notice

Cold-start rattling or clattering from the timing cover that clears within 10 to 30 seconds
Persistent chain noise at idle or light load after full warm-up in advanced cases
Rough idle or hesitation suggesting timing deviation
Check engine light with VVT-related fault codes

What to check

Cold-start the engine and immediately listen for chain rattle from the front of the engine.
Note whether noise clears fully with oil pressure or persists.
Scan for stored MIL codes related to cam or crank timing.
Review service records for any prior timing chain or tensioner work and confirm oil change frequency.

Where to look: Timing chain tensioner assembly, front of EZ30 flat-six engine

Parts involved: Timing chain.

Ask the seller

“Has the timing chain or tensioners ever been inspected or replaced?”
“Is there any cold-start rattling noise from the engine?”
“How many kilometres has this engine covered and what is the oil change history?”

05EJ20 Valve Stem Seal Oil Consumption

Higher-mileage EJ20 engines in the BL/BP Legacy develop oil consumption through worn valve stem seals.petrol2003–2009EngineCan't confirm for this car$900–$2,000

CommonEngine $900–$2,000 to fix

Can't confirm for this car

Higher-mileage EJ20 engines in the BL/BP Legacy develop oil consumption through worn valve stem seals. The seals harden and crack with age and heat cycling, losing their ability to prevent oil tracking down the valve stem into the combustion chamber. The characteristic pattern is blue smoke on a cold start that disappears as the engine warms up — oil that pooled on the valve heads overnight burns off in the first 30 seconds of running. Consumption rates of 1 litre per 1500–2500 km are common on unrepaired examples. The repair requires cylinder head removal to replace the seals and is labour-intensive on the flat-four layout; many owners defer it and simply monitor oil level, which risks low-oil damage if consumption is not tracked carefully.

Symptoms to notice

Visible blue smoke from the exhaust on cold start that clears within 30–60 seconds of running
Oil consumption requiring a top-up of 1 litre or more every 1500–2500 km
Oil-fouled spark plugs on one or more cylinders, leading to occasional misfire on start-up
Faint blue haze from the exhaust at idle after the engine has been sitting at operating temperature then restarted

What to check

Start the engine cold (ideally after sitting overnight) and watch the exhaust pipe for a puff of blue smoke in the first 10–30 seconds before it clears.
Check oil dipstick level against known service interval mileage to estimate consumption rate.
Check spark plugs for oil fouling — oily or blackened electrodes on otherwise-good plugs indicate valve seal seepage.
Ask about oil top-up frequency.

Where to look: Valve stems, both cylinder heads — EJ20 flat-four engine

Parts involved: Cylinder head.

Ask the seller

“How often does the oil need topping up between services?”
“Have you noticed any blue smoke from the exhaust when starting the car cold in the morning?”
“When were the spark plugs last replaced, and did they look normal?”

06EJ20T AVCS Oil Control Solenoid Failure Causing VVT Fault

Watch for: Check Engine Light with stored P001x or P002x cam timing fault codes.petrol2003–2009EngineCan't confirm for this car$300–$800

CommonEngine $300–$800 to fix

Can't confirm for this car

The Active Valve Control System (AVCS) on the EJ20T 2.0L turbocharged engine uses an oil-fed solenoid to vary intake camshaft timing by hydraulic pressure. Oil sludge accumulation or solenoid valve wear causes the solenoid to stick or respond slowly, resulting in the ECU detecting cam timing that is out of specification and logging fault codes. Left unaddressed, incorrect cam timing reduces turbocharged output, worsens fuel economy, and can cause rough cold-start behaviour as the cam phasing system cannot advance or retard correctly.

Symptoms to notice

Check Engine Light with stored P001x or P002x cam timing fault codes
Rough idle or hesitation immediately after cold start that clears as oil warms
Reduced peak power and throttle response in the mid-range under boost
Rattle or ticking from the camshaft area on startup that clears within seconds

What to check

Watch for: Check Engine Light with stored P001x or P002x cam timing fault codes. If a workshop inspection is possible: Retrieve OBD-II fault codes — P0010, P0011, P0012, P0014, P0021, P0022 or Subaru-specific AVCS codes indicate solenoid or cam sensor faults; with a live data scanner observe cam advance angle response during a cold-to-warm drive cycle; physically inspect the solenoid connector for oil contamination or corrosion; check engine oil service history as sludge is the primary root cause.

Where to look: AVCS solenoid mounted on the intake camshaft journal, top of the EJ20T engine block accessible from the cam cover area

Ask the seller

“Has the check engine light ever appeared, and what codes were stored?”
“Has the engine oil been changed at regular intervals with the correct grade specified?”
“Has the AVCS solenoid or camshaft position sensor ever been replaced?”

075EAT Automatic Transmission Solenoid Pack Wear

Watch for: Harsh or jerky gear changes, especially 2-3 or 3-4 shifts.petrol2003–2009TransmissionCan't confirm for this car$800–$4,500

OccasionalTransmission $800–$4,500 to fix

Can't confirm for this car

The 5EAT five-speed automatic transmission fitted to BP/BL Legacies develops solenoid valve wear over time, causing harsh or delayed gear changes, slipping and in some cases transmission failure. The solenoid pack is sensitive to old or contaminated ATF; many high-kilometre BP Legacies have had irregular fluid changes, accelerating wear. Early identification via solenoid replacement can extend transmission life. Full rebuild or replacement is expensive. Documented by Subaru transmission specialists and NZ/AU owner communities.

Symptoms to notice

Harsh or jerky gear changes, especially 2-3 or 3-4 shifts
Delayed engagement when selecting Drive from Park
Transmission slipping or hunting between gears
Check engine light with transmission-related fault codes (P07xx series)

What to check

Watch for: Harsh or jerky gear changes, especially 2-3 or 3-4 shifts. If a workshop inspection is possible: Test drive through all gears at varying speeds; check ATF fluid colour (should be clear red, not dark or burnt-smelling); scan for transmission fault codes with OBD-II reader; ask about ATF service history.

Where to look: 5EAT automatic transmission valve body

Parts involved: Mechatronic / valve body.

Ask the seller

“Has the automatic transmission fluid ever been changed and when?”
“Any harsh shifting or transmission slipping?”
“Has the transmission ever been serviced or rebuilt?”

085EAT Torque Converter Shudder and Clutch Pack Wear

Test drive at steady 60-80 km/h with light throttle and feel for vibration or judder.petrol2004–2009TransmissionCan't confirm for this car$1,600–$4,500Read the full fault: symptoms, where to look, what to ask the seller

Fluid leaks1

01EJ253 Front Timing Cover Oil Leak

With engine cold, inspect the front face of the engine with a torch.petrol2003–2012Fluid LeaksCan't confirm for this car$900–$1,900Read the full fault: symptoms, where to look, what to ask the seller

Other Subaru Liberty engines and years22 documented issues that do not apply to the one you picked.

Engine, transmission & cooling19

01Lineartronic TR580 CVT Failure

Check for May 2010 CVT oil cooler hose recall completion via Subaru NZ VIN check.petrol2010–2014TransmissionDoes not apply$5,500–$11,000Read the full fault: symptoms, where to look, what to ask the seller

02EJ20 2.0 twin-turbo primary turbo seizure from oil coking (B4 / GT-B)

Start the car from cold and watch the exhaust in a mirror or with a helper for a puff of blue smoke.petrol1998–2003EngineDoes not apply$2,500–$9,000

CommonEngine $2,500–$9,000 to fix

Does not apply

The sequential twin-turbo EJ206/EJ208 fitted to the Legacy B4 and GT-B is a Japanese-market-only engine and is far more failure-prone than the naturally aspirated Legacy engines of the same era. The primary turbo is the one that works hardest, and its oil feed cokes up over time — particularly on cars shut down hot without idling down, and on long oil-change intervals. The carbon starves the bearing, the turbo seizes or lets go, and it frequently takes the engine with it via debris and oil starvation. Note that the well-known Subaru head gasket problem of this era is a naturally aspirated issue and is not characteristic of these twin-turbo cars, so do not let a clean head gasket story reassure you about the turbos.

Symptoms to notice

Blue smoke from the exhaust, worst on start-up or when getting back on the throttle
Whistling, whining or grinding from the turbos that rises with revs
Noticeable loss of boost or a flat spot where the second turbo should hand over
Oil level dropping between services

What to check

Start the car from cold and watch the exhaust in a mirror or with a helper for a puff of blue smoke. Pull the dipstick and check both the level and whether the oil looks fresh or like old treacle — this engine is unforgiving of neglected oil changes and the dipstick tells you a lot about the previous owner. With the engine off and cool, look at the intercooler piping for oil misting at the joints. On the test drive, accelerate firmly through the rev range in a low gear and feel for the handover between the two turbos: it should be a smooth continuous pull, not a flat spot or a sudden surge, and there should be no whistling or grinding that rises with revs. After the drive, let it idle for a minute before shutting down and note whether the seller does the same habitually. Ask about oil change intervals specifically. If a workshop inspection is possible: have boost pressure logged against spec and the turbos checked for shaft play.

Where to look: Turbochargers on the exhaust side of the engine, low down at the rear of the bay; intercooler piping across the top of the engine

Parts involved: Turbocharger.

Ask the seller

“How often has the oil been changed, and with what oil?”
“Have either of the turbos been replaced or rebuilt?”
“Do you let it idle for a minute before switching off after a hard drive?”

03Fuel Pump Impeller Failure — Recall Risk (2018–2020)

Check the Subaru recall lookup (owner.subaru.com or NZ NZTA recall portal) using the VIN to confirm whether the fuel pump recall has been completed.petrol2018–2019EngineDoes not apply$0

OccasionalEngine $0 to fix

Does not apply

Subaru issued a safety recall (NHTSA Recall 21V-587 / equivalent ACCC recall in Australia) covering 2018–2020 Legacy models fitted with a Denso-supplied fuel pump. The pump's impeller can absorb fuel and swell, causing intermittent fuel starvation, hard starts, rough running, or sudden engine stall without warning. Stalling at highway speeds presents a serious safety risk. The remedy is a free fuel pump replacement at an authorised Subaru dealer. Used vehicles of these years should be verified as having had the recall completed.

Symptoms to notice

Engine stalls at speed without warning and may not restart immediately
Difficulty starting when hot, especially after a short stop
Rough or hesitant idle suggesting intermittent fuel pressure drop
Fuel pump warning or check engine light (P0087 low fuel pressure code)
Engine cuts out during acceleration at highway speeds

What to check

Check the Subaru recall lookup (owner.subaru.com or NZ NZTA recall portal) using the VIN to confirm whether the fuel pump recall has been completed.
Look for evidence of dealer recall service in the service history.
Note any prior complaint of hard starts or stalling.

Where to look: In-tank fuel pump module, accessible via fuel pump access panel under rear seat or in boot floor

Parts involved: Water pump.

Ask the seller

“Has the fuel pump recall (NHTSA 21V-587 or equivalent) been completed — can you show the dealer recall completion paperwork?”
“Has the vehicle ever stalled unexpectedly or been difficult to restart?”
“Has a Subaru dealer confirmed the VIN is clear of outstanding recalls?”

04Lineartronic CVT Judder Under Light Throttle

Test drive on a flat road at 60 km/h under light, steady throttle — feel for a rhythmic shudder or vibration transmitted through the drivetrain.petrol2010–2020TransmissionDoes not apply$250–$9,500

Very commonTransmission $250–$9,500 to fix

Does not apply

The TR690 Lineartronic CVT fitted to FB25 and FB20 Legacy models develops a characteristic judder or shudder under light, steady-state throttle at moderate speeds (roughly 40–80 km/h). Subaru issued TSB 16-98-17R covering this pattern. The judder is caused by torque converter lockup clutch stick-slip and degraded CVT fluid losing its friction-modifier properties. Early intervention with a Subaru-specified Lineartronic fluid flush resolves most cases; delay leads to accelerated wear of the belt/pulley assembly and eventual CVT failure requiring full unit replacement.

Symptoms to notice

Rhythmic shudder or vibration under light, steady throttle at 40–80 km/h
Vibration disappears under full throttle or engine braking
Judder worsens when CVT is at operating temperature
Shudder felt through the floor and seat rather than heard loudly
Warning light absent in early stages — fault is mechanical, not always flagged by ECU

What to check

Test drive on a flat road at 60 km/h under light, steady throttle — feel for a rhythmic shudder or vibration transmitted through the drivetrain.
Check CVT fluid condition and service history (interval should be 40,000 km or less).
Ask for proof of fluid changes.

Where to look: Lineartronic CVT unit, underneath centre of vehicle

Parts involved: Torque converter, Clutch.

Ask the seller

“Has the CVT fluid been changed and how often — can you show service records?”
“Has any dealer or workshop diagnosed a CVT shudder or performed a fluid flush under TSB 16-98-17R?”
“Has the CVT ever been replaced or had any internal work done?”

05FB25 CVT Chain Wear — Slipping and Shudder

Test drive at 50–80 km/h with light throttle and feel for shudder or surging.petrol2009–2014TransmissionDoes not apply$4,500–$9,000

CommonTransmission $4,500–$9,000 to fix

Does not apply

The BM/BR Legacy fitted with the FB25 naturally-aspirated engine and Subaru's Lineartronic CVT (TR690/TR580 variants) is subject to progressive wear of the push-belt/chain assembly and the primary/secondary pulley surfaces. Unlike a traditional torque-converter automatic, the CVT relies on metal-to-metal clamping force and any degradation in fluid condition or pulley surface finish causes micro-slippage. The driver experiences this as a shudder under light throttle at 40–80 km/h or a surging sensation at cruise. Advanced wear produces audible CVT whine and eventually full belt slip under load. Subaru issued revised CVT fluid specifications and extended the service interval warning on these units. Full CVT replacement is expensive; early fluid-change intervention can extend service life significantly.

Symptoms to notice

Shudder or vibration felt through the driveline under light throttle between 40 and 80 km/h
Surging or hunting sensation at steady highway cruise speed
High-pitched CVT whine increasing in pitch with road speed
Delayed engagement or slipping when pulling away from a standstill under load

What to check

Test drive at 50–80 km/h with light throttle and feel for shudder or surging.
Check CVT fluid colour (should be clear pink/red — brown or burnt smell indicates degraded fluid).
Ask for CVT fluid change history: Subaru specifies ECVT fluid changes every 40,000 km in severe service.
Scan for CVT-related fault codes (P0868, P0869, P17XX series).

Where to look: Lineartronic CVT unit (TR690/TR580) mounted behind engine

Parts involved: Torque converter, CVT belt and pulleys.

Ask the seller

“Has the CVT fluid ever been changed, and at what mileage?”
“Has the car ever shown a CVT warning light or transmission-related fault code?”
“Does the car shudder or surge when driving at 60 km/h with gentle throttle?”

06Lineartronic CVT TR690 Input Bearing Whine

Road test at 60-100 km/h with engine at low revs — maintain speed and lift off to separate road speed from engine RPM.petrol2010–2014TransmissionDoes not apply$3,200–$7,000Read the full fault: symptoms, where to look, what to ask the seller

072.0D Diesel DPF Blockage and Regeneration Failure

Check for DPF warning light on the dashboard.diesel2009–2015EngineDoes not apply$400–$4,500

CommonEngine $400–$4,500 to fix

Does not apply

The EE20-series 2.0L boxer diesel (badged as the 2.0D) fitted to the BR/BN Legacy is susceptible to DPF (Diesel Particulate Filter) blockage when the vehicle is used predominantly on short urban trips. Passive regeneration requires sustained motorway speeds; without them, soot accumulates until the ECU commands an active regen cycle — which itself can fail if interrupted. Repeated failed regens result in a fully blocked DPF requiring forced dealer regeneration or physical replacement. The EE20's horizontally-opposed layout also makes the DPF thermally challenged due to lower exhaust gas temperatures compared to conventional inline diesels.

Symptoms to notice

DPF warning light illuminated on dashboard
Noticeable loss of power and increased fuel consumption during failed regen attempts
ECU enters limp mode restricting speed to around 60–70 km/h
Excessive black or white smoke from exhaust during regen cycle
Engine oil level rises due to fuel dilution from repeated failed regen injections

What to check

Check for DPF warning light on the dashboard.
Request a dealer-level diagnostic read of DPF soot load percentage.
Confirm the vehicle has regular motorway use.
Inspect exhaust for excessive smoke during a cold start or spirited acceleration.

Where to look: DPF unit in the exhaust system, under the vehicle behind the catalytic converter

Parts involved: Diesel particulate filter.

Ask the seller

“Has the DPF ever been cleaned, forced-regenerated by a dealer, or replaced?”
“What has the typical weekly driving pattern been — mostly short trips or regular motorway use?”
“Has the oil been analysed for fuel dilution or changed more frequently than the service interval?”

08EJ251/EJ254 2.5 external head gasket coolant leak (BE/BH)

With the engine warm after the test drive, sniff around the engine bay for a sweet coolant smell.petrol1999–2003CoolingDoes not apply$2,200–$4,500

Very commonCooling $2,200–$4,500 to fix

Does not apply

The Phase 2 2.5 boxer in the BE/BH Liberty and Legacy is one of the most documented head gasket failers Subaru ever built: the composite gaskets weep coolant (and often oil) externally, usually starting on the side of the engine nearest the battery. Subaru ran service campaign WWP-99 in the US for 1999-2002 2.5 cars, adding cooling system conditioner and extending head gasket warranty - an admission of how widespread it is; that warranty is decades expired. A slow external weep can run for months, but ignored it ends in coolant loss and an overheated, warped engine. On a car this age assume the gaskets have either been done or will need doing.

Symptoms to notice

Coolant level slowly dropping with no puddle on the ground
Sweet coolant smell after a drive
Crusty green or white residue along the join between head and block
Oil weep low on the engine sides
Temperature gauge creeping up on hills in bad cases

What to check

With the engine warm after the test drive, sniff around the engine bay for a sweet coolant smell. Use a phone torch to look along the join between each cylinder head and the block from above - the side nearest the battery fails most often - for green/white crusty residue or fresh wet coolant. Check the coolant reservoir level and ask when it was last topped up. Ask directly whether the head gaskets have ever been replaced and look for the invoice; a receipted head gasket job with machined heads is a strong point in the car's favour. If a workshop inspection is possible: have the cooling system pressure-tested and the sniff test done for combustion gases, and get the underside checked for gasket weep with the car raised.

Where to look: Head-to-block join on both sides of the flat-four engine, most often the side nearest the battery

Parts involved: Head gasket.

Ask the seller

“Have the head gaskets been replaced, and is there an invoice?”
“Does it ever lose coolant between services?”
“Has the car ever overheated?”

09EZ36 Boxer Six Timing Chain Tensioner Wear

Cold-start the engine and listen for rattle from the front of the engine block before revving.petrol2014–2019EngineDoes not apply$1,800–$3,800

OccasionalEngine $1,800–$3,800 to fix

Does not apply

The Legacy 3.6R fitted with the EZ36 horizontally-opposed six shares the same hydraulic timing chain tensioner design as the Outback 3.6R. At high mileage, typically above 150,000 km, the tensioners weaken and allow chain slack to develop. Cold-start rattle is the first warning sign; continued wear risks timing chain jump and valve damage. The Legacy 3.6R was sold in NZ and AU in limited numbers, so used examples are often high-mileage. The repair involves full timing chain kit replacement and significant disassembly of the front of the engine. Confirming oil service history is essential when evaluating these vehicles.

Symptoms to notice

Cold-start metallic chain rattle that subsides once oil pressure builds
Camshaft correlation error codes P0016 through P0019
Engine running roughly at idle if timing has slipped
Check Engine light with timing-related diagnostic codes
Elevated oil consumption in advanced wear cases

What to check

Cold-start the engine and listen for rattle from the front of the engine block before revving. Confirm oil change records show correct interval and specification. High-mileage examples warrant a Subaru specialist inspection before purchase. If a workshop inspection is possible: Perform an OBD scan for camshaft and crankshaft position codes.

Where to look: Timing chain, tensioners, and guides under front timing cover between cylinder banks

Parts involved: Timing chain.

Ask the seller

“Has the timing chain or tensioner been inspected or replaced?”
“Does the engine make any cold-start rattling or ticking noise?”
“What oil specification has been used and how often was it changed?”

10BM/BR Rear Differential Clutch Pack Wear (AWD Binding)

In a deserted car park, drive in a full-lock circle at low speed.2009–2014TransmissionDoes not apply$1,400–$3,200

OccasionalTransmission $1,400–$3,200 to fix

Does not apply

The BM/BR Legacy uses a torque-split AWD system with an electronically-controlled rear differential that contains a multi-disc wet clutch pack to vary drive distribution between front and rear axles. With age and high mileage, the clutch pack friction discs wear, and degraded differential fluid loses its friction-modifier properties. The result is AWD binding — the front and rear axles fight each other during low-speed manoeuvring such as tight parking turns. On worn units the car shudders and vibrates through the driveline in car parks. In more severe cases a burning smell comes from the rear diff area. The fix is clutch pack replacement or rear differential overhaul and a fluid change with correct spec DCCD/rear diff fluid.

Symptoms to notice

Driveline shudder or vibration when executing tight low-speed turns such as in a car park
AWD system binding causing the car to resist full-lock cornering as if the brakes are being dragged
Burning or hot-clutch smell from the rear of the car after slow-speed manoeuvring
Rough or jerky power delivery at the rear wheels during moderate acceleration from rest

What to check

In a deserted car park, drive in a full-lock circle at low speed. A healthy AWD Legacy should turn smoothly. If the driveline shudders, hops or resists the tight turn, the rear diff clutch pack is suspect. Check under the car for any leaks or residue around the rear differential casing. Ask for rear differential fluid change history — Subaru specifies replacement every 40,000 km for the rear diff fluid on AWD models.

Where to look: Rear differential / transfer clutch unit, centre of rear axle

Parts involved: Differential, Clutch.

Ask the seller

“Has the rear differential fluid ever been changed, and at what mileage?”
“Does the car shudder or feel like it is binding when turning tightly in a car park?”
“Has any workshop commented on the AWD system or rear differential during a service?”

114EAT torque bind - AWD transfer clutch and Duty C solenoid failure

1999–2003TransmissionDoes not apply$600–$3,000

CommonTransmission $600–$3,000 to fix

Does not apply

Automatic BE/BH Liberty and Legacy models drive the rear wheels through a transfer clutch pack in the tail of the 4EAT gearbox, controlled by the 'Duty C' solenoid. When the solenoid or clutch pack fails the car develops 'torque bind': it shudders and hops as if the handbrake is dragging in tight, slow turns, and in many cases the AT Oil Temp light flashes 16 times at start-up. Caught early it is often just the solenoid; driven on, it wears the clutch pack and can damage the rear drivetrain. This is one of the best-documented Subaru automatic faults of the era.

Symptoms to notice

Shudder, hopping or binding in tight low-speed turns (car parks, driveways)
AT Oil Temp light flashing 16 times after start-up
Clunk from the rear when turning sharply
Feels like the brakes drag momentarily on full lock

What to check

In a quiet car park on the test drive, do several full-lock turns in both directions at walking pace, forwards and in reverse - binding, hopping or shudder through the car is the symptom, and a healthy car does it smoothly. Watch the dashboard at start-up: count any flashing of the AT Oil Temp light, because 16 flashes is the gearbox flagging a stored fault. Ask when the transmission fluid was last changed. If a workshop inspection is possible: a workshop can read the transmission's stored codes, check the Duty C solenoid operation and inspect the transfer clutch before you commit.

Where to look: Rear extension housing of the 4EAT automatic gearbox - transfer clutch pack and Duty C solenoid; symptom felt in tight turns

Parts involved: Clutch.

Ask the seller

“Does it ever shudder or bind in tight, slow turns?”
“Has the AT Oil Temp light ever flashed at start-up?”
“When was the transmission fluid last serviced?”

12EJ20 2.0 twin-turbo sequential changeover and exhaust control valve faults

The test drive is the real test here.petrol1998–2003EngineDoes not apply$400–$2,500

CommonEngine $400–$2,500 to fix

Does not apply

The sequential system runs the small primary turbo at low revs and brings in the larger secondary turbo higher up, managed by a set of vacuum-actuated control valves including an exhaust control valve that should stay shut at idle. The actuators, vacuum hoses and solenoids perish with age, and when the changeover misbehaves the car surges, hesitates or simply will not make full boost. It is rarely catastrophic on its own but it is genuinely difficult to diagnose, few New Zealand workshops know the system well, and a car sold as "just needs a tune" often has a perished vacuum system behind it. Budget diagnostic time as well as parts.

Symptoms to notice

Surging, hesitation or a sudden flat spot around 4,000 rpm where the second turbo takes over
Boost that feels inconsistent between drives
Engine warning light with boost-related codes
Audible hissing from the engine bay under load

What to check

The test drive is the real test here. On a clear straight road, accelerate firmly in a mid gear from about 2,000 rpm all the way up and pay attention to the middle of the rev range: the pull should be continuous, with at most a mild step. A pronounced flat spot, a surge, or boost that arrives and then falls away points at the changeover system. Repeat it two or three times, since the fault often varies. With the bonnet up and the engine idling, listen for hissing and look over the many small vacuum hoses across the top of the engine for hoses that are cracked, brittle, oil-soaked or obviously replaced with generic tubing. Ask whether the car has been modified, remapped or had a boost controller fitted, and whether any original vacuum plumbing was removed. If a workshop inspection is possible: have the vacuum system pressure-tested and boost logged, and the fault memory read.

Where to look: Top and rear of the engine — vacuum solenoids, actuators and hoses around the twin turbochargers

Parts involved: Turbocharger.

Ask the seller

“Has the car been remapped, modified, or had a boost controller fitted?”
“Has any of the vacuum or turbo control plumbing been changed or removed?”
“Does it ever hesitate or surge in the mid range?”

13FB20 Oil Consumption from Short-Trip Use

Check oil level at every fuel stop for two weeks.petrol2009–2014EngineDoes not apply$500–$2,500

CommonEngine $500–$2,500 to fix

Does not apply

The FB20 2.0 flat-four engine consumes oil at an elevated rate on city-use examples where the engine rarely reaches sustained operating temperature. Consumption beyond 1 litre per 5000km is abnormal.

Symptoms to notice

Blue smoke from exhaust on startup after overnight park
Frequent oil top-ups needed between regular service intervals

What to check

Check oil level at every fuel stop for two weeks.
Ask about typical trip distances.
Consumption above 1 litre per 5000km warrants investigation.

Where to look: Engine piston rings and valve stem seals

Ask the seller

“Has the fb20 oil consumption from short-trip been inspected or repaired?”

14FB20/FB25 timing chain cold-start rattle

Cold-start the vehicle and immediately listen for chain rattle from the top of the engine.petrol2009–2019EngineDoes not apply$1,200–$2,400

CommonEngine $1,200–$2,400 to fix

Does not apply

The FB-series flat-four engines used in BM/BR (2009-2014) and BS/BN (2014-2019) Legacy are known for timing chain rattle on cold starts, caused by stretched chains and worn tensioners. The dual AVCS variable cam timing system can also develop slack-related VVT fault codes when chain wear advances. The fault is documented across all FB-engined Subaru models including Impreza and Forester of the same era. Repair requires chain, tensioners and guides replaced as a set.

Symptoms to notice

Distinct rattling or slapping noise on cold start, may clear after 5 to 20 seconds
Noise persists at idle after warm-up in advanced cases
Check engine light with cam timing or VVT fault codes such as P0011 or P0021
Slightly rough idle or hesitation on acceleration

What to check

Cold-start the vehicle and immediately listen for chain rattle from the top of the engine.
Note whether it clears quickly (mild wear) or persists after warm-up (advanced wear).
Scan for stored or pending VVT-related fault codes.
Check service history for oil change frequency — infrequent or incorrect viscosity oil changes accelerate chain wear.

Where to look: Timing chain, tensioners and guides at the top of the FB-series engine

Parts involved: Timing chain.

Ask the seller

“Has the timing chain or tensioners been replaced?”
“How often was the engine oil changed and what viscosity was used?”
“Is there any cold-start rattle before the engine settles at idle?”

15EJ25T AVCS cam gear bolt loosening

Scan for cam position sensor fault codes before purchasing.petrol2009–2014EngineDoes not apply$800–$1,600

CommonEngine $800–$1,600 to fix

Does not apply

The turbocharged EJ255 in the BM/BR Legacy GT uses Subaru's Active Valve Control System. The intake camshaft sprocket retaining bolt and gear can work loose due to oil pressure pulsing and high-load cycling. A loose AVCS cam gear produces a ticking or knocking noise and triggers cam position fault codes. If the gear slips significantly, cam timing is lost and engine damage can follow. The same fault is extensively documented on WRX of the same generation sharing identical hardware.

Symptoms to notice

Ticking or knocking from the top of the engine, often most apparent at idle
Check engine light with intake cam timing codes such as P0340 or P0345
Rough idle or hesitation on acceleration
Noise intensity changes with engine RPM

What to check

Scan for cam position sensor fault codes before purchasing.
Listen carefully at idle for ticking or rattling from the valve cover area.
Ask for service records showing AVCS inspection history.
Confirm whether the cam gear retaining bolts have been re-torqued or replaced with upgraded hardware as a precaution.

Where to look: Intake camshaft AVCS gear and retaining bolt, driver-side cylinder head of EJ255

Ask the seller

“Has the car had any cam timing faults or check engine lights?”
“Has the AVCS cam gear retaining bolt been inspected or replaced?”
“Is the car running any aftermarket tune or boost modifications?”

16FB25 DI Intake Valve Carbon Buildup

Review service records for any prior decarbonisation treatment.petrol2014–2019EngineDoes not apply$600–$1,400

CommonEngine $600–$1,400 to fix

Does not apply

The BS-generation Legacy fitted with the FB25 2.5-litre direct-injection engine develops carbon deposits on intake valve stems and faces over time. Because direct injection bypasses the intake valves with fuel, no solvent washes the valves clean and deposits accumulate from normal combustion blow-by. Symptoms begin appearing from around 60,000 km and include rough idle, cold-start hesitation, and occasional misfire codes. The Legacy shares the FB25 engine and platform with the contemporary Outback BS and is equally susceptible. Walnut blasting or chemical decarbonisation resolves the condition but treatment may need repeating every 60,000 to 80,000 km.

Symptoms to notice

Rough idle on cold start
Stumble or hesitation under light acceleration from rest
P0300 to P0304 misfire diagnostic codes
Slightly increased fuel consumption over time
Occasional Check Engine warning light

What to check

Review service records for any prior decarbonisation treatment. If a workshop inspection is possible: Run an OBD scan for misfire fault codes. Borescope the intake valve faces for visible carbon deposits via the intake manifold runner ports.

Where to look: Intake valve faces and port walls, both cylinder banks, accessed via intake manifold removal

Ask the seller

“Has any decarbonisation or walnut blast service been performed and when?”
“Have there been any check engine lights or misfire codes?”

17EJ25 AVCS Solenoid Fault Causing Rough Running

Scan for P0011/P0021 cam timing codes.petrol2009–2014EngineDoes not apply$300–$900

OccasionalEngine $300–$900 to fix

Does not apply

The EJ25 2.5T Active Valve Control System solenoid can develop a fault or blockage causing the VVT system to malfunction, resulting in rough running and hesitation particularly at cold start.

Symptoms to notice

Rough running and hesitation especially on cold start and low-rpm operation
P0011 or P0021 cam timing fault codes stored on scan tool

What to check

Scan for P0011/P0021 cam timing codes.
Note rough running or hesitation at cold start.
Inspect AVCS solenoid screens for blockage from dirty oil.

Where to look: AVCS solenoids on cylinder heads, top of engine

Ask the seller

“Has the ej25 avcs solenoid fault causing been inspected or repaired?”

18EJ251/EJ254 piston slap - cold-start knock from worn piston skirts

petrol1999–2003EngineDoes not apply$3,500–$8,000

CommonEngine $3,500–$8,000 to fix

Does not apply

These 2.5 boxers are widely documented for 'piston slap': a hollow knocking for the first minutes after a cold start, caused by piston-to-bore clearance opening up with wear, which quietens or disappears as the engine warms. Owner communities treat mild piston slap as a live-with-it noise that does not by itself kill the engine, but it terrifies buyers and it is easily confused with rod knock - which is fatal. The distinction matters more than the noise: slap fades with warmth, rod knock does not. A proper fix means new pistons or a rebuilt engine, which almost nobody does on a car of this value.

Symptoms to notice

Hollow knocking or clatter on cold start that fades as the engine warms
Noise loudest on the first start of the day
Knock briefly louder when the cold engine is revved gently

What to check

Arrange to arrive before the car has been started and listen to the first start of the day from stone cold - ask the seller not to warm it up beforehand. A knock that clearly fades over five to ten minutes of warming is characteristic piston slap; a knock that stays just as loud hot is a much more serious bottom-end problem and a reason to walk away. Watch for: a seller who has pre-warmed the engine before you arrive. If a workshop inspection is possible: have a Subaru-familiar mechanic listen hot and cold to rule out rod knock before you price the car.

Where to look: Bottom end of the flat-four engine - pistons and cylinder bores; heard from the front of the engine bay

Ask the seller

“Does it knock when cold, and does the noise go away once warm?”
“How long has it made the noise and has it changed?”
“Has anyone diagnosed it - piston slap or bearing knock?”

19Air Conditioning Condenser Microchannel Corrosion and Refrigerant Leak

Run the air conditioning and check that cold air is delivered within 60 seconds.2009–2020CoolingDoes not apply$150–$1,600

CommonCooling $150–$1,600 to fix

Does not apply

The aluminium microchannel condenser fitted to BR/BN/BS Legacy models is prone to pinhole corrosion and micro-fractures, particularly in coastal NZ environments or on vehicles that have been exposed to road salt. Refrigerant (R134a) leaks slowly from corrosion pits in the condenser fins or end-tank welds. This leads to progressive loss of air conditioning performance before complete failure. The condenser is mounted at the front of the vehicle and is exposed to stone chips and corrosive debris. Replacement is the only reliable fix once corrosion begins leaking.

Symptoms to notice

Air conditioning blowing warm or only mildly cool air on hot days
Gradual decline in AC cooling performance over months rather than sudden failure
AC compressor cycling rapidly on and off (low refrigerant pressure triggering cut-out)
Oily residue or discolouration visible on condenser fins when inspected
Refrigerant recharge provides temporary relief but the system loses charge again within weeks or months

What to check

Run the air conditioning and check that cold air is delivered within 60 seconds.
Inspect the condenser face (visible behind the front grille) with a torch for corrosion pitting, oily residue (indicating refrigerant/oil weeping), or physical damage.
If a workshop inspection is possible: Have the system pressure-tested with a UV dye check if AC performance is marginal.

Where to look: Air conditioning condenser mounted in front of the radiator, behind the front bumper grille

Parts involved: Body corrosion.

Ask the seller

“Has the air conditioning ever been regassed or has the condenser been replaced?”
“How long has the vehicle operated in a coastal or high-salt environment?”
“Is the air conditioning currently fully functional — can I test it during the inspection?”

Electrical1

01EyeSight Stereo Camera Misalignment After Windscreen Replacement

Check EyeSight indicator light on dashboard — a steady orange or flashing indicator signals a calibration fault.2015–2020ElectricalDoes not apply$350–$900

CommonElectrical $350–$900 to fix

Does not apply

The EyeSight driver-assist system on BS-generation Legacy (2015–2020) uses two stereo cameras mounted at the top of the windscreen. Any windscreen replacement — including insurance-covered glass — requires a Subaru-dealer recalibration of the stereo camera baseline. If the recalibration is not performed or is performed incorrectly by a non-Subaru workshop, the system issues phantom collision warnings, fails to detect vehicles at correct distances, or disables itself entirely. This is a known and documented issue widely reported in markets where windscreen replacements are common (stone chips, etc.).

Symptoms to notice

EyeSight warning light on dashboard (orange steady or flashing)
Phantom or false pre-collision warnings with no obstacle present
Adaptive cruise control disengaging unexpectedly
Lane departure warnings firing on straight, clearly marked roads
System fully disabled with 'EyeSight Disabled' message on multi-information display

What to check

Check EyeSight indicator light on dashboard — a steady orange or flashing indicator signals a calibration fault.
Test the pre-collision braking and lane-keep functions on a road with clear lane markings.
Ask whether the windscreen has ever been replaced and whether Subaru dealer recalibration was performed and documented.

Where to look: EyeSight stereo camera unit at top centre of windscreen interior

Ask the seller

“Has the windscreen ever been replaced, and was EyeSight recalibration carried out by a Subaru dealer with documentation?”
“Is the EyeSight system currently active and functioning — can I see it operational during the test drive?”
“Has the EyeSight warning light ever appeared on the dashboard?”

Body, brakes, suspension & interior2

01Rear Wheel Bearing Failure (AWD Models)

The rear wheel bearings on BR/BN/BS Legacy AWD models have a documented pattern of premature wear, particularly on the passenger-side rear.petrol2009–2020SuspensionDoes not apply$380–$950

CommonSuspension $380–$950 to fix

Does not apply

The rear wheel bearings on BR/BN/BS Legacy AWD models have a documented pattern of premature wear, particularly on the passenger-side rear. The sealed hub-and-bearing units are non-serviceable and must be replaced as an assembly. Failure is accelerated by harsh road surfaces and by the constant torque loading characteristic of Subaru's symmetrical AWD system. Worn bearings that are neglected eventually seize, posing a safety risk. This fault appears in NHTSA complaints and NZ/AU workshop reports.

Symptoms to notice

Low-pitched droning or growling noise from the rear that increases with vehicle speed
Noise changes character or intensity when cornering or making gentle lane changes
Vibration felt through the floor at highway speeds
Audible rumbling that intensifies above 80 km/h
Detectable lateral or axial play when the rear wheel is rocked by hand

What to check

During test drive, listen for a low droning or growling noise that increases with speed and changes when the steering wheel is turned slightly left or right (loading/unloading the bearing). Any detectable play indicates a worn bearing. If a workshop inspection is possible: Jack each rear wheel and check for play by rocking the tyre at 12 and 6 o'clock positions.

Where to look: Rear wheel hub assemblies, most commonly passenger-side (right) rear

Parts involved: Wheel bearing.

Ask the seller

“Have any wheel bearings been replaced, and at what mileage?”
“Has any workshop noted bearing noise or play during a WoF or service inspection?”
“What roads has the vehicle primarily been used on — unsealed or rough roads accelerate wear?”

02Rear Suspension Multi-Link Bush Collapse

Inspect rear suspension arm bushes for cracking.2009–2014SuspensionDoes not apply$400–$1,200

CommonSuspension $400–$1,200 to fix

Does not apply

Rear multi-link suspension bushes harden and collapse causing rear knocking and imprecision.

Symptoms to notice

Knocking from rear suspension over rough surfaces
Imprecise rear handling and slight inner tyre edge wear

What to check

Inspect rear suspension arm bushes for cracking.
Push arms — any movement indicates collapsed bushes.

Where to look: Rear multi-link suspension arm bushes

Ask the seller

“Has the rear suspension multi-link bush collapse been inspected or repaired?”

Subaru Liberty faults in detail

Narrowed to the Subaru Liberty · 2005. Each of these has its own page: the symptoms, where to look, what to ask the seller and what the repair costs. Free, no account needed.

5EAT Torque Converter Shudder and Clutch Pack WearMajor · Transmission EJ25/EJ20 Timing Belt and Water Pump Catastrophic Failure RiskCritical · Engine EJ253 Front Timing Cover Oil LeakMajor · Fluid Leaks Front Knuckle Lower Ball Joint FailureMajor · Suspension

What these repairs cost on other cars

Some of the Subaru Liberty’s documented faults are repairs other models share. Each page lists the documented NZ cost for every model it affects.

Other Subaru models

Subaru Legacy54 documented faults Subaru Forester50 documented faults Subaru Impreza44 documented faults Subaru Outback34 documented faults Subaru STI32 documented faults Subaru BRZ26 documented faults

Subaru Liberty buyer questions

Is the Subaru Liberty reliable?

Like any used car, it depends on the specific example and its service history. Across the 38 documented faults for the Subaru Liberty, the recurring problem areas are transmission, engine, and cooling. A Subaru Liberty with a full service history and no signs of the issues listed on this page can be a sound buy but each one needs to be checked individually before you commit.

What are the most common problems with a used Subaru Liberty?

We've catalogued 38 known faults for the Subaru Liberty, covering transmission, engine, and cooling. All 38 are written out in full on this page, with the symptoms to notice, what to inspect, and typical repair costs for each. Free to read, no account needed.

How much do repairs cost on a Subaru Liberty?

Most single repairs on the Subaru Liberty fall between $600–$2,000 at NZ independent-workshop rates. Some of the 38 documented faults cost less and a few cost considerably more, and no one car needs them all. Knowing which ones to look for before you view is what lets you negotiate the price down or walk away.

Should I get a pre-purchase inspection on a Subaru Liberty?

Yes. A Subaru Liberty inspection focused on its known weak points is the single best way to avoid an expensive mistake. KickTyres gives you a guided, model-specific inspection plus a market valuation and negotiation figure for $24.90 far less than the cost of missing one of the faults on this page.