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Subaru1998–2020 Critical issues documented

Subaru Legacy: common faults & what to check

Thinking about buying a used Subaru Legacy (1998–2020) in New Zealand? We've documented 54 known faults for this model spanning engine, suspension, electrical, and transmission. Each researched and verified before it's published. The most serious issues here are rated critical. Every one is listed below with its symptoms and repair cost, and each has its own page with where to look and what to ask the seller. Free, no account needed.

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  • Odometer history
  • Money owing
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  • NZ owned and operated

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54

Documented faults

Critical

Most serious

$600–$2,200

Typical repair

42

Service milestones

Which Subaru Legacy are you looking at?

7 generation variants documented. Pick the shape you recognise: the faults, the servicing and the timeline below all narrow to it. Free, no account needed.

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.

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Subaru LegacyEngine not picked yet

Pick the engine above first: the Legacy came with 7, and without it the report has to show all of their faults. Pick the engine

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Can't confirm for this car

Subaru Legacy

Nothing has been narrowed yet, so nothing below is a claim about a particular car. Pick a year and an engine to see which faults apply.

Tell us the engine, or check the engine code on the car, before relying on this.

matched on no vehicle context

What to look out for

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

  • Serious issue

    Check radiator coolant level and condition for oil contamination.

    See why

    EJ20/EJ25 head gasket failure

    The EJ20 and EJ25 flat-four engines fitted to BP/BL Legacy are highly prone to external coolant and oil leaks at the head gaskets, and in severe cases internal coolant consumption leading to overheating and engine damage. Subaru NZ and AU acknowledged the issue with an extended warranty programme covering some vehicles. The EJ25 2.5 non-turbo is the most frequently affected variant. Head gasket replacement requires full engine removal and cylinder head resurfacing.

    What you would notice

    • Coolant loss without visible external leak
    • White or sweet-smelling exhaust smoke
    • Oil and coolant mixing visible as milky residue on dipstick or filler cap
    • Overheating in traffic or under load
    • External oil or coolant weeping at cylinder head mating surface

    Typically $2,500–$4,800 to put right.

  • Serious issue

    With engine at operating temperature, inspect the head-to-block join on both cylinder banks for brown or orange crystallised coolant residue.

    See why

    EJ25 DOHC External Head Gasket Coolant Leak

    The EJ25 DOHC engine fitted to BL/BP GT and outgoing BM/BR models suffers a well-documented failure of the composite head gasket at the external coolant passages on the exhaust side of each cylinder head. The gasket face breaks down between the coolant jacket and the outside of the block, allowing coolant to seep externally rather than into the combustion chamber. This makes detection harder — there is often no hydrocarbon contamination in the coolant and no white smoke — while coolant loss is slow and progressive. Left untreated the engine overheats and warps the aluminium head, turning a gasket job into a head-resurfacing or replacement job. Considered the single most common mechanical failure on the EJ25 platform.

    What you would notice

    • Slow coolant loss requiring top-up every 1000–3000 km with no visible puddle under the car
    • Brown or orange crusty residue at the head gasket joint line on the outside of the engine block
    • Temperature gauge creeping higher than normal on long highway runs or in traffic
    • Sweet coolant smell from the engine bay after a run

    Typically $2,200–$4,500 to put right.

  • Serious issue

    Perform a chemical combustion-leak test (block tester with blue fluid) on the coolant reservoir with the engine warm.

    See why

    EJ25 SOHC Head Gasket Internal Failure (Coolant to Combustion)

    The EJ25 2.5L SOHC flat-four engine used in naturally aspirated Legacy variants suffers a well-documented failure of the head gasket between the coolant passages and combustion chamber. The aluminium cylinder heads and cast-iron cylinder liners expand at different rates under thermal cycling, causing the factory head gasket to lose clamping force over time; this allows combustion gases to enter the cooling system and coolant to enter the combustion chamber. The result is progressive coolant loss, overheating events, and catalytic converter damage from coolant combustion, making this one of the most consequential mechanical failures on the BP/BL platform.

    What you would notice

    • Unexplained coolant loss with no visible external leak and no oil contamination visible in coolant
    • White steam or sweet-smelling exhaust at operating temperature, especially under acceleration load
    • Engine overheating or temperature gauge climbing above normal mid-range
    • Positive combustion-leak test (blue fluid turns yellow/green) on cooling system

    Typically $1,800–$3,500 to put right.

  • Serious issue

    Start the car from cold and watch the exhaust in a mirror or with a helper for a puff of blue smoke.

    See why

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

    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.

    What you would 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

    Typically $2,500–$9,000 to put right.

  • Serious issue

    Check for blue smoke under hard acceleration.

    See why

    EJ255 turbo piston ringland cracking

    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.

    What you would 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

    Typically $4,000–$9,000 to put right.

  • Serious issue

    Ask whether the banjo bolt filter screens have been removed — the single most telling question on these cars.

    See why

    GT/2.0GT turbo oil starvation and ringland failure (banjo screen, EJ255/EJ20X)

    Turbo BL/BP Legacys — NZ-new 2.5GT and the JDM 2.0GT twin-scroll cars that flooded into NZ — suffer turbo oil starvation from the clogging mesh screen in the turbo oil-feed banjo bolt, plus the EJ255's cracked piston ringlands when tuned or run on cheap fuel. Subaru issued a bulletin on the banjo screens and specialists remove them as routine. A seized turbo is expensive; ringland failure means a rebuild. Stretched oil intervals are the common thread in both failures.

    What you would notice

    • Turbo whine or grinding
    • Blue smoke under boost
    • Loss of power/boost
    • Misfire on one cylinder
    • Oil pressure light flicker at hot idle

    Typically $2,500–$9,000 to put right.

Subaru Legacy service schedule

What falls due, and at what distance, for each generation of the Subaru Legacy. 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.

7th Generation · 2019–2026 · 2.4L (FA24F) - XT Turbo

Petrol

Due by distance

  1. 60,000 km

    Have the transmission fluid inspected and give the turbocharger housing a thorough health check.

  2. 100,000 km

    Look over the drive belts, and since the FA24F is direct-injection, replacing the spark plugs early is worth doing.

  3. 150,000 km

    A full suspension refresh with struts and control arm bushings starts to make sense here, to keep the ride quality Subaru is known for.

7th Generation · 2019–2026 · 2.5L (FB25) - Standard/X

Petrol

Due by distance

  1. 100,000 km

    Getting a professional to assess the CVT fluid becomes a sensible move around this distance.

  2. 150,000 km

    Cooling system hoses and tiring suspension components are both worth inspecting here.

  3. 200,000 km

    Check the main engine sensors, and bear in mind the alternator and starter motor are nearing the end of their usual life.

6th Generation · 2014–2019 · 3.6L (EZ36) - 3.6R

Petrol

Due by distance

  1. 100,000 km

    Refresh the CVT transmission fluid in full so it keeps operating smoothly long term.

  2. 150,000 km

    The accessory drive belt and its tensioners often reach their service limit here, so check their condition.

  3. 200,000 km

    Suspension bushings and sway bar links wear naturally on typical New Zealand roads, so review them at this point.

6th Generation · 2014–2019 · 2.5L (FB25) - 2.5i/Premium

Petrol

Due by distance

  1. 100,000 km

    A major service is due, spark plugs included, and the boxer layout of the FB25 makes that a slightly bigger job than usual.

  2. 150,000 km

    Rubber parts start losing their flex about now, so inspect the cooling system, especially the radiator hoses and thermostat.

  3. 200,000 km

    Look over the suspension dampers and control arm bushings for signs of perishing.

5th Generation · 2009–2014 · 2.5L (EJ25/FB25) - 2.5i/Premium

Petrol

Due by distance

  1. 100,000 km

    Inspect the suspension bushings, and the spark plugs may need replacing at this distance.

  2. 150,000 km

    Have the transmission fluid checked, since clean fluid is what keeps a CVT alive.

  3. 200,000 km

    Cooling system parts such as the radiator and hoses often start to perish around this mark.

5th Generation · 2009–2014 · 2.5L (EJ25) - 2.5GT Turbo

Petrol

Due by distance

  1. 100,000 km

    The timing belt, idlers and water pump should all be replaced together at this point.

  2. 150,000 km

    Flush the cooling system completely and take a look at the suspension bushings while you are at it.

  3. 200,000 km

    Check the O2 and MAF sensors are still healthy so fuel use stays where it should be.

5th Generation · 2009–2014 · 3.6L (EZ36) - 3.6R

Petrol

Due by distance

  1. 100,000 km

    If there is no record of a full transmission fluid service, get one done, as fresh fluid extends its life.

  2. 150,000 km

    Check the suspension bushings and control arms, because NZ roads wear these out faster.

  3. 200,000 km

    Assess the cooling system, particularly the radiator hoses and thermostat, to keep the engine in good health.

5th Generation · 2009–2014 · 2.0L (EE20) - 2.0D Turbo Diesel

Diesel

Due by distance

  1. 100,000 km

    If the car has done much towing, the clutch and dual-mass flywheel may be getting tired by now.

  2. 150,000 km

    Have the turbocharger and intercooler piping checked for oil residue, a typical sign of high-mileage wear.

  3. 200,000 km

    Fuel injectors should be tested for an even spray pattern so the engine keeps running efficiently.

4th Generation · 2003–2009 · 2.0L (EJ20) - 2.0GT Turbo

Petrol

Due by distance

  1. 100,000 km

    By now the timing belt, water pump and idler pulleys should already have been replaced, and if not they need doing straight away.

  2. 150,000 km

    The radiator and coolant hoses go brittle with age, so this is a good window to assess them.

  3. 200,000 km

    Get the suspension struts and bushings professionally inspected so the ride stays firm.

4th Generation · 2003–2009 · 2.0L (EJ20) - 2.0i/R

Petrol

Due by distance

  1. 100,000 km

    The first major timing belt service should have happened by this point, so check the logbook confirms it.

  2. 150,000 km

    Inspect the suspension bushings and shock absorbers to hold on to that classic Subaru ride quality.

  3. 200,000 km

    A full cooling system refresh, radiator and hoses included, keeps it dependable for daily commuting.

4th Generation · 2003–2009 · 3.0L (EZ30) - 3.0R

Petrol

Due by distance

  1. 150,000 km

    Make sure the spark plugs have been dealt with, which on the EZ30 flat-six is a fiddlier job than most.

  2. 200,000 km

    Review the suspension bushings and steering rack mounts so the handling stays true to the car.

  3. 250,000 km

    Attention shifts to cooling parts like the radiator and thermostat, since heat stress is hard on the engine seals.

3rd Generation (Facelift) · 2000–2003 · 3.0L (EZ30) - RS30/GT30

Petrol

Due by distance

  1. 150,000 km

    Inspect the suspension bushings and shock absorbers for signs of perishing.

  2. 200,000 km

    Check the cooling system is sound, hoses and radiator included, to head off heat-related trouble.

  3. 250,000 km

    A full look over the engine ancillaries and the transmission fluid keeps everything running smoothly.

3rd Generation (Facelift) · 2000–2003 · 2.0L (EJ20) - Twin Turbo RS/GT

Petrol

Due by distance

  1. 100,000 km

    The big timing belt job is essential here, with the idler pulleys and water pump replaced at the same time.

  2. 150,000 km

    Expect to inspect the suspension bushings, and wheel bearings often need replacing by this stage.

  3. 200,000 km

    Plastics go brittle over two decades, so plan on a comprehensive cooling system refresh including the radiator and hoses.

3rd Generation (Facelift) · 2000–2003 · 2.0L (EJ20) - 2.0i/GX

Petrol

Due by distance

  1. 100,000 km

    The timing belt interval becomes the main reliability question at this distance.

  2. 150,000 km

    Smaller items such as the radiator hoses and other cooling parts are usually replaced now as a precaution.

  3. 200,000 km

    Suspension parts including the struts and control arm bushings tend to start showing their age here.

See all 54 documented issuesEverything researched for the Subaru Legacy, including 12 rated critical.
Depends on which engine this Subaru Legacy has — 54Each of these is documented for one particular engine. Pick the year and engine above to see which of them apply.
Engine, transmission & cooling33

01EJ20 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.petrol1998–2003EngineRead the full fault: symptoms, where to look, what to ask the seller

02EJ255 turbo piston ringland cracking

Check for blue smoke under hard acceleration.petrol2003–2009EngineRead the full fault: symptoms, where to look, what to ask the seller

03GT/2.0GT turbo oil starvation and ringland failure (banjo screen, EJ255/EJ20X)

Ask whether the banjo bolt filter screens have been removed — the single most telling question on these cars.petrol2003–2009EngineRead the full fault: symptoms, where to look, what to ask the seller

04EJ20/EJ25 head gasket failure

Check radiator coolant level and condition for oil contamination.petrol2003–2009EngineRead the full fault: symptoms, where to look, what to ask the seller

05EJ25 DOHC External Head Gasket Coolant Leak

With engine at operating temperature, inspect the head-to-block join on both cylinder banks for brown or orange crystallised coolant residue.petrol2003–2012EngineRead the full fault: symptoms, where to look, what to ask the seller

06EJ25 SOHC Head Gasket Internal Failure (Coolant to Combustion)

Perform a chemical combustion-leak test (block tester with blue fluid) on the coolant reservoir with the engine warm.petrol2003–2009EngineRead the full fault: symptoms, where to look, what to ask the seller

07EZ36D Timing Belt and Water Pump Premature Failure

Request documentary proof of timing belt and water pump replacement.petrol2009–2020Engine
OccasionalEngine $1,200–$2,800 to fix

Can't confirm for this car

The EZ36D 3.6L horizontally-opposed six-cylinder uses a timing belt (not a chain) driving the water pump. The manufacturer service interval is 160,000 km or 10 years for the belt, but real-world failures — particularly from the water pump bearing seizing before its scheduled replacement — have been documented at considerably lower mileages. A seized water pump shreds the timing belt, causing catastrophic engine damage (bent valves, damaged pistons) on this interference engine. The water pump and belt should be replaced together as a set well before the maximum interval.

Symptoms to notice

  • Coolant leak or weeping from the water pump area on the front of the engine
  • Squealing or rumbling noise from the front of the engine that changes with engine speed
  • Overheating due to water pump impeller failure before belt failure
  • In catastrophic failure: sudden loud bang followed by loss of power and engine damage
  • No obvious warning in most cases until failure — prevention through documented service history is the only safeguard

What to check

Request documentary proof of timing belt and water pump replacement. On high-mileage or high-age examples, inspect the belt visually if possible (requires cover removal). Any crack, glazing, or fraying is critical. Check coolant condition — rusty coolant accelerates water pump bearing wear.

Where to look: Front of EZ36D engine, behind timing belt cover on the driver and passenger side

Parts involved: Timing belt, Water pump.

Ask the seller

  • “Has the timing belt and water pump been replaced, and can you provide workshop receipts showing the mileage and date?”
  • “What is the current mileage and year — is it approaching or past the 160,000 km / 10-year replacement interval?”
  • “Has the coolant ever been contaminated or has the engine overheated?”

08EJ25 Timing Belt Failure (Interference Engine)

Request dated workshop receipt.petrol2003–2009Engine
CommonEngine $700–$1,400 to fix

Can't confirm for this car

Like all EJ25-powered Subarus, the BP/BL Legacy uses an interference timing belt that causes catastrophic engine damage if it fails. The 100,000 km / 10-year interval is widely considered conservative by NZ/AU mechanics who recommend 80,000 km. Many BP/BL Legacies have accumulated well over 200,000 km and timing belt histories may be incomplete, particularly on JDM imports. Failure to replace results in engine write-off.

Symptoms to notice

  • No symptoms prior to failure
  • Engine unable to start post-failure
  • Sudden engine cut-out at speed post-failure

What to check

Request dated workshop receipt; cross-check odometer with stated replacement km; inspect belt if accessible; if history unknown, budget for immediate replacement before purchase.

Where to look: Front of EJ25 engine

Parts involved: Timing belt.

Ask the seller

  • “When was the timing belt last done and at what odometer?”
  • “Do you have a receipt for the service?”
  • “Were tensioners and water pump replaced at the same time?”

09EJ25 Timing Belt Tensioner Bearing Failure

Ask for documented timing belt service history with date and odometer reading.petrol2003–2012Engine
OccasionalEngine $700–$1,400 to fix

Can't confirm for this car

The EJ25 engine in BL/BP GT and selected BM variants uses a timing belt with a hydraulic tensioner and an idler bearing. The idler bearing is a sealed unit that is exposed to high temperatures and vibration. When the bearing fails, it typically gives advance warning through belt noise before the roller seizes, causing the belt to skip or snap. On the EJ25 interference engine, belt snap causes catastrophic piston-to-valve contact and typically destroys the engine. Subaru's recommended belt service interval is 100,000 km, but many NZ-market used imports arrive with no documented belt history. Tensioner bearing replacement should always be completed as part of the timing belt service — failure to replace the idler is a false economy.

Symptoms to notice

  • High-pitched chirping or squealing from the front of the engine that varies with engine speed
  • Timing belt noise that appears intermittently and worsens over time
  • Sudden engine seizure or catastrophic mechanical noise followed by no-start if belt snaps
  • No documented timing belt service history on a vehicle over 100,000 km

What to check

Ask for documented timing belt service history with date and odometer reading. If over 100,000 km or history unknown, treat as unserviced. On a cold start, listen for a chirping or squealing from the front of the engine that changes with rpm — this is the idler bearing failing. If a workshop inspection is possible: Remove the upper timing cover inspection plug if accessible to check belt condition.

Where to look: Front of engine, timing belt idler and hydraulic tensioner behind timing cover

Parts involved: Timing belt.

Ask the seller

  • “When was the timing belt last replaced, and is there documentation (invoice with date and km)?”
  • “Was the idler bearing and tensioner replaced at the same time as the belt?”
  • “Has the car ever made any chirping or squealing noise from the front of the engine?”

10Fuel 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.petrol2018–2019Engine
OccasionalEngine $0 to fix

Can't confirm for this car

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

  1. 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.
  2. Look for evidence of dealer recall service in the service history.
  3. 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?”

11Lineartronic 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.petrol2010–2020TransmissionRead the full fault: symptoms, where to look, what to ask the seller

12FB25 CVT Chain Wear — Slipping and Shudder

Test drive at 50–80 km/h with light throttle and feel for shudder or surging.petrol2009–2014TransmissionRead the full fault: symptoms, where to look, what to ask the seller

13Lineartronic CVT (TR690) torque converter shudder and valve body faults

Test drive with sustained light throttle at 50 km/h and repeated gentle take-offs, uphill if possible.2009–2020TransmissionRead the full fault: symptoms, where to look, what to ask the seller

145EAT Automatic Transmission Solenoid Pack Wear

Watch for: Harsh or jerky gear changes, especially 2-3 or 3-4 shifts.petrol2003–2009Transmission
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?”

152.0D Diesel DPF Blockage and Regeneration Failure

Check for DPF warning light on the dashboard.diesel2009–2015EngineRead the full fault: symptoms, where to look, what to ask the seller

16EJ253 head gasket external leak (2.5i, BL/BP and BM/BR)

Identify the engine first — 2.5i is the risk case; JDM 2.0 and 3.0R six are much safer bets for this fault.petrol2003–2012EngineRead the full fault: symptoms, where to look, what to ask the seller

17EJ251/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.petrol1999–2003CoolingRead the full fault: symptoms, where to look, what to ask the seller

18EZ36 Boxer Six Timing Chain Tensioner Wear

Cold-start the engine and listen for rattle from the front of the engine block before revving.petrol2014–2019Engine
OccasionalEngine $1,800–$3,800 to fix

Can't confirm for this car

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.

The front of a dual overhead camshaft engine with the timing cover removed, exposing the timing chain and sprockets.Example of the part — not this vehicle

The front of a twin-cam engine with the timing cover off — chain, sprockets and guides.

Logansenf · CC BY-SA 4.0 · Wikimedia Commons

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?”

19EJ20 Head Gasket Inter-Cylinder Seepage (Cylinders 2–3)

Pull the oil dipstick and look for a milky or frothy emulsion indicating coolant contamination.petrol2003–2009EngineRead the full fault: symptoms, where to look, what to ask the seller

20BM/BR Rear Differential Clutch Pack Wear (AWD Binding)

In a deserted car park, drive in a full-lock circle at low speed.2009–2014Transmission
OccasionalTransmission $1,400–$3,200 to fix

Can't confirm for this car

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?”

214EAT torque bind - AWD transfer clutch and Duty C solenoid failure

1999–2003TransmissionRead the full fault: symptoms, where to look, what to ask the seller

22EZ30 H6 timing chain tensioner failure

Cold-start the engine and immediately listen for chain rattle from the front of the engine.petrol2003–2009Engine
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.

The front of a dual overhead camshaft engine with the timing cover removed, exposing the timing chain and sprockets.Example of the part — not this vehicle

The front of a twin-cam engine with the timing cover off — chain, sprockets and guides.

Logansenf · CC BY-SA 4.0 · Wikimedia Commons

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

  1. Cold-start the engine and immediately listen for chain rattle from the front of the engine.
  2. Note whether noise clears fully with oil pressure or persists.
  3. Scan for stored MIL codes related to cam or crank timing.
  4. 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?”

23EJ20 2.0 twin-turbo sequential changeover and exhaust control valve faults

The test drive is the real test here.petrol1998–2003EngineRead the full fault: symptoms, where to look, what to ask the seller

24FB20 Oil Consumption from Short-Trip Use

Check oil level at every fuel stop for two weeks.petrol2009–2014Engine
CommonEngine $500–$2,500 to fix

Can't confirm for this car

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

  1. Check oil level at every fuel stop for two weeks.
  2. Ask about typical trip distances.
  3. 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?”

25FB20/FB25 timing chain cold-start rattle

Cold-start the vehicle and immediately listen for chain rattle from the top of the engine.petrol2009–2019EngineRead the full fault: symptoms, where to look, what to ask the seller

26EJ20 Valve Stem Seal Oil Consumption

Higher-mileage EJ20 engines in the BL/BP Legacy develop oil consumption through worn valve stem seals.petrol2003–2009EngineRead the full fault: symptoms, where to look, what to ask the seller

27FB25 External Head Gasket Oil Seep (Driver Side)

Remove undertray and inspect the driver-side (left when facing engine) cylinder head-to-block joint for brown oily residue or fresh oil seepage.petrol2010–2019EngineRead the full fault: symptoms, where to look, what to ask the seller

28EJ25T AVCS cam gear bolt loosening

Scan for cam position sensor fault codes before purchasing.petrol2009–2014EngineRead the full fault: symptoms, where to look, what to ask the seller

29FB25 DI Intake Valve Carbon Buildup

Review service records for any prior decarbonisation treatment.petrol2014–2019EngineRead the full fault: symptoms, where to look, what to ask the seller

30EJ25 AVCS Solenoid Fault Causing Rough Running

Scan for P0011/P0021 cam timing codes.petrol2009–2014Engine
OccasionalEngine $300–$900 to fix

Can't confirm for this car

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

  1. Scan for P0011/P0021 cam timing codes.
  2. Note rough running or hesitation at cold start.
  3. 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?”

31EJ20T AVCS Oil Control Solenoid Failure Causing VVT Fault

Watch for: Check Engine Light with stored P001x or P002x cam timing fault codes.petrol2003–2009EngineRead the full fault: symptoms, where to look, what to ask the seller

32EJ251/EJ254 piston slap - cold-start knock from worn piston skirts

petrol1999–2003Engine
CommonEngine $3,500–$8,000 to fix

Can't confirm for this car

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?”

33Air Conditioning Condenser Microchannel Corrosion and Refrigerant Leak

Run the air conditioning and check that cold air is delivered within 60 seconds.2009–2020Cooling
CommonCooling $150–$1,600 to fix

Can't confirm for this car

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

  1. Run the air conditioning and check that cold air is delivered within 60 seconds.
  2. Inspect the condenser face (visible behind the front grille) with a torch for corrosion pitting, oily residue (indicating refrigerant/oil weeping), or physical damage.
  3. 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?”
Electrical5

01Takata front passenger airbag recall (BL/BP Legacy, 2003-2009)

2003–2009Electrical
CommonElectrical $0–$600 to fix

Can't confirm for this car

Every engine in the BL/BP Legacy (2003-2009) was recalled because the Takata front passenger airbag inflator can absorb moisture over time and rupture when the airbag fires, throwing metal fragments into the cabin. Subaru Japan recall 3825 covers chassis codes BL5, BL9, BLE, BP5, BP9, BPE and BPH, and Australian recall PRA 2016/15507 covers 2004-2009 Liberty. The fix is a free replacement inflator at a Subaru dealer. An unrepaired car is a serious injury risk in any crash that fires the airbag.

Symptoms to notice

  • No symptoms until the airbag deploys
  • No recall sticker or service record for the airbag campaign

What to check

  1. Ask the seller for recall paperwork or a dealer service history showing the campaign was done, and ask a franchise dealer to run the VIN or chassis number for open recalls before you buy.
  2. Look for a recall completion label in the engine bay or door jamb.
  3. Ask whether the car is a Japanese import, because imports often missed the campaign.
  4. If a workshop inspection is possible: a Subaru dealer can confirm the inflator part number fitted.

Where to look: Front passenger airbag in the dashboard

Ask the seller

  • “Has the Takata passenger airbag recall been done, and can I see the paperwork?”
  • “Is this a Japanese import, and has a dealer checked its chassis number for open recalls?”

02EyeSight Stereo Camera Misalignment After Windscreen Replacement

Check EyeSight indicator light on dashboard — a steady orange or flashing indicator signals a calibration fault.2015–2020ElectricalRead the full fault: symptoms, where to look, what to ask the seller

03Fuel pump wiring connector recall (BL/BP Legacy, 2004-2009)

2004–2009Electrical
OccasionalElectrical $0–$500 to fix

Can't confirm for this car

BL/BP Legacy and Liberty models from 2004-2009 were recalled in Australia (PRA 2018/16850, Subaru campaign SI0428) because the fuel pump wiring harness connector can deteriorate over time. When it fails the fuel pump stops, so the engine can stall while driving or refuse to start or restart. The dealer fix is free for covered cars. Japanese import cars may not be in the Australian campaign, so ask a dealer to check the chassis number.

Symptoms to notice

  • Engine cuts out while driving
  • Long cranking or no start, especially when hot
  • Intermittent stalling

What to check

  1. Ask the seller for recall paperwork or a dealer service history showing the campaign was done, and ask a franchise dealer to run the VIN or chassis number for open recalls before you buy.
  2. Start the car several times and on the test drive note any stumble or cut out.
  3. Ask whether it has ever stalled or failed to restart.
  4. If a workshop inspection is possible: the connector sits on top of the fuel pump under the rear seat and can be checked for heat damage.

Where to look: Fuel pump connector under the rear seat, on top of the fuel tank

Ask the seller

  • “Has the fuel pump connector recall (SI0428) been done?”
  • “Has the car ever stalled or refused to restart?”

04Electric Power Steering Rack Rattle

Drive over rough surfaces with windows down and listen for rattle from steering area.2009–2014Electrical
CommonElectrical $600–$2,200 to fix

Can't confirm for this car

EPS rack develops internal rattle at low speeds over rough surfaces.

Symptoms to notice

  • Knocking or rattling from steering area at low speeds over rough surfaces
  • Vibration felt through steering wheel rim during slow manoeuvring

What to check

Drive over rough surfaces with windows down and listen for rattle from steering area.

Where to look: Electric power steering rack assembly

Parts involved: Steering rack.

Ask the seller

  • “Has the electric power steering rack rattle been inspected or repaired?”

05BN/BS infotainment freezing and battery drain

Work the head unit hard on the test drive — pair a phone, stream audio, cycle reverse several times.2015–2020Electrical
CommonElectrical $300–$2,000 to fix

Can't confirm for this car

BN/BS Legacys (sold as Liberty in Australia) have two related electrical gripes: the Harman/Starlink head unit freezes, reboots and blanks the reversing camera (subject of the US Udeen v. Subaru class action for 2017-2018 units, addressed by successive firmware updates), and the DCM telematics/parasitic drain issue that produced a separate US class action can flatten batteries on cars that sit. Neither is dangerous, but a replacement head unit is expensive and chronic flat batteries kill batteries and strand owners.

Symptoms to notice

  • Head unit freezes or reboots mid-drive
  • Reversing camera black screen
  • Flat battery after sitting a week
  • Bluetooth pairing drops
  • New-looking battery on a low-km car

What to check

Work the head unit hard on the test drive — pair a phone, stream audio, cycle reverse several times. Ask about firmware updates. Check the battery date label and ask how many batteries the car has had. If it has sat on a dealer lot, ask whether it needed jump-starting.

Where to look: Dashboard head unit; 12V battery in engine bay

Parts involved: 12V battery.

Ask the seller

  • “Has the head unit had firmware updates or been replaced?”
  • “How many batteries has the car been through?”
Body, brakes, suspension & interior15

01Front Lower Control Arm Ball Joint Wear

Watch for: Knocking or clunking from the front suspension over bumps, speed bumps, or driveway lips.2003–2009Suspension
CommonSuspension $350–$900 to fix

Can't confirm for this car

The front lower control arm ball joints on the BP/BL Legacy are a wear item that deteriorates with age and mileage, particularly on vehicles used on rough or unsealed roads common in New Zealand. The ball joint consists of a steel ball stud running in a polymer or metal socket; as the socket liner wears, radial and axial play increases until the joint can no longer maintain consistent steering geometry. A failed ball joint can separate suddenly under load, causing immediate loss of steering and wheel control, making this a safety-critical inspection point.

The front wheel of a car splayed outward with the lower control arm hanging down after a ball joint separation.Example of the part — not this vehicle

A separated lower ball joint: the control arm has dropped and the wheel has splayed out under the guard.

Elfix · CC0 · Wikimedia Commons

Symptoms to notice

  • Knocking or clunking from the front suspension over bumps, speed bumps, or driveway lips
  • Vague or wandering steering feel with excessive play on centre
  • Uneven tyre wear or front-end pulling to one side
  • Visible play detected when wheel is rocked at 6 and 12 o'clock positions on the hoist

What to check

Watch for: Knocking or clunking from the front suspension over bumps, speed bumps, or driveway lips. If a workshop inspection is possible: With the vehicle on a hoist with wheels hanging freely, grasp the wheel at 6 and 12 o'clock and rock it; any vertical play in the ball joint is a failure indicator; use a pry bar under the lower arm and observe ball joint movement while an assistant watches; visually inspect the ball joint boot for cracking or grease loss; check for corroded or loose ball joint pinch bolt at the knuckle.

Where to look: Front lower control arm, ball joint at the outer end connecting the arm to the front wheel hub knuckle — one per side

Parts involved: Ball joint.

Ask the seller

  • “Have the front ball joints been inspected or replaced, and at what mileage?”
  • “Has the vehicle been used on gravel or unsealed roads?”
  • “Has any knocking or clunking been noticed from the front suspension?”

02Rust in JDM imports — arches, sills, underbody and tailgate seams

Check rear arch lips by feel, sills and jacking points on your knees, and the underbody with a torch — ideally on a hoist.2003–2014Body & RustRead the full fault: symptoms, where to look, what to ask the seller

03Electric Power Steering Rack Rattle and Clunk

2005–2009Suspension
CommonSuspension $800–$2,800 to fix

Can't confirm for this car

The BP/BL Legacy (from approximately 2006 onward on certain variants) uses an electric power steering (EPS) system in which the assist motor drives the steering rack directly or via a reduction gear. Wear in the rack-and-pinion mesh, degradation of the rack support yoke preload spring, or looseness in the EPS motor coupling produce a rattle or clunk transmitted through the steering wheel and column. The noise is particularly evident on light road imperfections and at parking speeds, and can worsen progressively until rack replacement is required.

Symptoms to notice

  • Rattle or clunk felt through the steering wheel when passing over small bumps or rough road surfaces
  • Knocking sound from the steering rack area during slow parking manoeuvres
  • EPS warning light illuminated on the instrument cluster
  • Intermittent loss of power steering assist, particularly in cold conditions

What to check

With the vehicle stationary on a flat surface, rock the steering wheel sharply left and right on centre while listening for a knock or rattle from the rack area; inspect the rack mounting brackets and bushings for wear or movement; check the steering column intermediate shaft universal joints for play; scan for EPS fault codes (C-code chassis codes); have an assistant watch the rack from below while you rock the steering to localise movement.

Where to look: Steering rack assembly mounted across the front subframe behind the engine, EPS motor and coupling at the base of the steering column or on the rack body

Parts involved: Steering rack.

Ask the seller

  • “Has the steering ever felt loose or produced a rattle over bumps?”
  • “Has the EPS warning light ever appeared on the dashboard?”
  • “Has the steering rack or any steering components been replaced?”

04BL/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 & RustRead the full fault: symptoms, where to look, what to ask the seller

05BL/BP Rear Lateral Arm Bush Wear and Geometry Drift

Look for cracked or extruded rubber at the bush faces.2003–2009SuspensionRead the full fault: symptoms, where to look, what to ask the seller

06Front Lower Control Arm Ball Joint Premature Wear

Inspect the joint boot for tears or grease contamination.petrol2014–2019Suspension
CommonSuspension $450–$1,100 to fix

Can't confirm for this car

The BS Legacy shares its front suspension architecture with the Outback BS, including the same sealed-for-life lower control arm ball joints that cannot be individually serviced or greased. In New Zealand conditions, particularly on vehicles used on gravel driveways, rural roads, or corrugated unsealed surfaces, ball joint wear accelerates and often presents well before 100,000 km. The entire lower control arm must be replaced when the joint is worn. Clunking over bumps and vague steering are the primary symptoms. The safety implications of complete ball joint separation make this a critical inspection item on any BS Legacy pre-purchase evaluation.

The front wheel of a car splayed outward with the lower control arm hanging down after a ball joint separation.Example of the part — not this vehicle

A separated lower ball joint: the control arm has dropped and the wheel has splayed out under the guard.

Elfix · CC0 · Wikimedia Commons

Symptoms to notice

  • Knocking or clunking from front suspension over bumps
  • Steering that feels vague or wanders slightly on straight roads
  • Accelerated or uneven tyre wear on the front axle
  • Audible knock during slow parking manoeuvres while turning at full lock

What to check

  1. Inspect the joint boot for tears or grease contamination.
  2. Test both sides independently.
  3. Confirm whether any replacement has been performed and ask the owner whether rural or gravel road driving has occurred regularly.
  4. If a workshop inspection is possible: With the car on a hoist, use a pry bar under the lower arm to test for vertical play in the ball joint.

Where to look: Front lower control arm ball joint, both left and right sides of the front subframe

Parts involved: Ball joint.

Ask the seller

  • “Have the front lower control arms or ball joints been replaced?”
  • “Is there any clunking from the front suspension over bumps?”
  • “Has the car been regularly driven on gravel or unsealed roads?”

07Rear 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.petrol2009–2020SuspensionRead the full fault: symptoms, where to look, what to ask the seller

08Front lower control arm bush collapse

Push the lower arm fore and aft by hand to check for movement beyond normal compliance.petrol2014–2019Suspension
CommonSuspension $400–$850 to fix

Can't confirm for this car

Front lower control arm rear bushes on BS/BN Legacy deteriorate and collapse, leading to vague handling, toe change under braking and accelerated tyre wear on front inner edges. The rubber factory bushes degrade in NZ and AU conditions and under regular highway use. This fault is widely reported on the BS Outback which shares the same platform and subframe. Bush replacement requires pressing out old units and pressing in new ones.

The front wheel of a car splayed outward with the lower control arm hanging down after a ball joint separation.Example of the part — not this vehicle

A separated lower ball joint: the control arm has dropped and the wheel has splayed out under the guard.

Elfix · CC0 · Wikimedia Commons

Symptoms to notice

  • Vague or wandering steering feel at highway speeds
  • Uneven or rapid front inner tyre wear
  • Clunking from the front suspension under braking or over sharp dips
  • Wheel alignment cannot be held within spec despite recent adjustment

What to check

  1. Push the lower arm fore and aft by hand to check for movement beyond normal compliance.
  2. Check front tyres for inner-edge wear pattern.
  3. Review alignment history for repeated adjustments.
  4. If a workshop inspection is possible: Raise the front of the vehicle and visually inspect the lower control arm rear bush for cracking, tearing or collapse.

Where to look: Front lower control arm rear bush, both left and right sides

Parts involved: Ball joint.

Ask the seller

  • “When were the front lower arm bushes last inspected or replaced?”
  • “Has the car needed frequent wheel alignments or struggled to hold alignment?”
  • “Is there any unusual front tyre wear, particularly on the inner edge?”

09Front Lower Arm Ball Joint Wear

Inspect boot for splitting.2009–2014Suspension
CommonSuspension $350–$800 to fix

Can't confirm for this car

Front lower arm ball joints wear causing clunking and handling imprecision.

The front wheel of a car splayed outward with the lower control arm hanging down after a ball joint separation.Example of the part — not this vehicle

A separated lower ball joint: the control arm has dropped and the wheel has splayed out under the guard.

Elfix · CC0 · Wikimedia Commons

Symptoms to notice

  • Clunking from front suspension over bumps
  • Imprecise handling feel when cornering

What to check

Inspect boot for splitting. If a workshop inspection is possible: With vehicle raised, lever the lower arm and check for ball joint play.

Where to look: Front lower suspension control arms

Parts involved: Ball joint.

Ask the seller

  • “Has the front lower arm ball joint been inspected or repaired?”

10Rear wheel bearing premature wear

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

Can't confirm for this car

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?”

11Front and Rear CV Joint Boot Cracking and Grease Loss

Inspect all CV boot surfaces for cracking, splitting, or collapse.2003–2009SuspensionRead the full fault: symptoms, where to look, what to ask the seller

12Brake Caliper Guide Pin Seizure

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

Can't confirm for this car

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?”

13Electric power steering rack rattle and knock

Road test on a rough or chip-sealed road while making small steering corrections and listen for rack knock.petrol2014–2019Suspension
OccasionalSuspension $1,200–$2,700 to fix

Can't confirm for this car

BS/BN Legacy models with electric power steering can develop a rattle or clunk from the steering rack, typically felt and heard over small bumps and road irregularities. The fault is linked to worn inner tie rod end preload bushes within the rack assembly and general internal rack wear. Subaru released a service bulletin for some markets recommending rack inspection and replacement where worn. The noise can be confused with suspension noise but tracks directly with steering inputs.

Symptoms to notice

  • Rattling or clunking from the steering column area over bumps
  • Knock felt through the steering wheel on rough or chip-sealed roads
  • Noise correlates with steering inputs rather than purely with road texture
  • Increased play in the straight-ahead steering position

What to check

Road test on a rough or chip-sealed road while making small steering corrections and listen for rack knock. With the vehicle stationary and engine running, gently rock the steering wheel and listen for internal rack knock. With the car raised, have a helper rock the wheel while you feel the inner tie rod joints for play.

Where to look: Electric power steering rack, centred on the firewall behind the engine

Parts involved: Steering rack.

Ask the seller

  • “Has any knocking or rattling been noticed from the steering on rough roads?”
  • “Has the steering rack or tie rods been inspected recently?”
  • “Has a Subaru dealer or independent workshop flagged any EPS faults?”

14Windscreen spontaneous cracking (BN/BS with EyeSight)

Inspect the full windscreen in raking light, concentrating on the lower edge near the wiper park/deicer area.2015–2019Body & Rust
OccasionalBody & Rust $800–$1,800 to fix

Can't confirm for this car

2015-2019 Legacys/Outbacks were the subject of a US class action over windscreens that crack from trivial or no visible impact, often spreading from the bottom edge near the deicer element. Many NZ/AU cars carry EyeSight stereo cameras behind the glass, so replacement needs correct-spec glass and camera recalibration, pushing costs well above a generic screen. Multiple replacements in a car's history are the tell.

Symptoms to notice

  • Crack rising from the lower windscreen edge
  • History of repeated windscreen claims
  • Chips spreading quickly across the glass

What to check

  1. Inspect the full windscreen in raking light, concentrating on the lower edge near the wiper park/deicer area.
  2. Ask how many screens the car has had and whether EyeSight was recalibrated after replacement — request the invoice.
  3. Confirm EyeSight functions (adaptive cruise, lane warnings) on the test drive.

Where to look: Windscreen, lower edge near the cowl/deicer

Ask the seller

  • “Has the windscreen been replaced, how many times?”
  • “Was EyeSight recalibrated afterwards?”

15Rear Suspension Multi-Link Bush Collapse

Inspect rear suspension arm bushes for cracking.2009–2014Suspension
CommonSuspension $400–$1,200 to fix

Can't confirm for this car

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

  1. Inspect rear suspension arm bushes for cracking.
  2. 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?”
Fluid leaks1

01Rear 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
CommonFluid Leaks $400–$900 to fix

Can't confirm for this car

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?”

Subaru Legacy faults in detail

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.

2.0D Diesel DPF Blockage and Regeneration FailureMajor · Engine4EAT torque bind - AWD transfer clutch and Duty C solenoid failureMajor · TransmissionBL/BP Rear Lateral Arm Bush Wear and Geometry DriftMajor · SuspensionBL/BP Wagon Tailgate Hinge Mounting Point RustMajor · Body & RustEJ20 2.0 twin-turbo primary turbo seizure from oil coking (B4 / GT-B)Critical · EngineEJ20 2.0 twin-turbo sequential changeover and exhaust control valve faultsMajor · EngineEJ20 Head Gasket Inter-Cylinder Seepage (Cylinders 2–3)Major · EngineEJ20 Valve Stem Seal Oil ConsumptionMajor · EngineEJ20/EJ25 head gasket failureCritical · EngineEJ20T AVCS Oil Control Solenoid Failure Causing VVT FaultMajor · EngineEJ25 DOHC External Head Gasket Coolant LeakCritical · EngineEJ25 SOHC Head Gasket Internal Failure (Coolant to Combustion)Critical · EngineEJ251/EJ254 2.5 external head gasket coolant leak (BE/BH)Major · CoolingEJ253 head gasket external leak (2.5i, BL/BP and BM/BR)Major · EngineEJ255 turbo piston ringland crackingCritical · EngineEJ25T AVCS cam gear bolt looseningMajor · EngineEyeSight Stereo Camera Misalignment After Windscreen ReplacementMajor · ElectricalFB20/FB25 timing chain cold-start rattleMajor · EngineFB25 CVT Chain Wear — Slipping and ShudderMajor · TransmissionFB25 DI Intake Valve Carbon BuildupMajor · EngineFB25 External Head Gasket Oil Seep (Driver Side)Major · EngineFront and Rear CV Joint Boot Cracking and Grease LossMajor · SuspensionGT/2.0GT turbo oil starvation and ringland failure (banjo screen, EJ255/EJ20X)Critical · EngineLineartronic CVT (TR690) torque converter shudder and valve body faultsMajor · TransmissionLineartronic CVT Judder Under Light ThrottleMajor · TransmissionRear Wheel Bearing Failure (AWD Models)Major · SuspensionRust in JDM imports — arches, sills, underbody and tailgate seamsMajor · Body & Rust

What these repairs cost on other cars

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

Buying guides that cover the Subaru Legacy

Other Subaru models

Subaru Forester50 documented faultsSubaru Impreza44 documented faultsSubaru WRX41 documented faultsSubaru Liberty38 documented faultsSubaru Outback34 documented faultsSubaru STI32 documented faults

Subaru Legacy buyer questions

Is the Subaru Legacy reliable?

Like any used car, it depends on the specific example and its service history. Across the 54 documented faults for the Subaru Legacy, the recurring problem areas are engine, suspension, and electrical. A Subaru Legacy 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 Legacy?

We've catalogued 54 known faults for the Subaru Legacy, covering engine, suspension, and electrical. All 54 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 Legacy?

Most single repairs on the Subaru Legacy fall between $600–$2,200 at NZ independent-workshop rates. Some of the 54 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 Legacy?

Yes. A Subaru Legacy 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.