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Subaru1992–2023 Critical issues documented

Subaru WRX GD: common faults & what to check

The GD is the Subaru WRX built 2000–2008. It was sold here with the 2.0L petrol (EJ20) and 2.5 turbo boxer (STI). Of the 41 faults documented for the WRX, 12 apply to this generation, each with its symptoms, what to inspect and a typical repair cost. Free, no account needed.

Check this exact Subaru WRX

  • Odometer history
  • Money owing
  • Reported stolen
  • Ownership history
  • Official NZ vehicle register data
  • NZ owned and operated

Type the plate for the free basics. The full record is a paid check from $13.49, one car at a time, no subscription.

No NZ plate yet, or buying in Australia? Pick the generation and engine and start a free check below. New to KickTyres? How the check works →

41

Documented faults

Critical

Most serious

$900–$3,200

Typical repair

33

Service milestones

You're looking at the GD

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

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.

A 2002 Subaru WRX is the GD generation (2000 to 2008).

Start your free check on this Subaru WRX

No plate needed. You get the risk score, the buyer's checklist and the guided inspection for the exact car you picked above — not the whole nameplate.

Subaru WRX GDEngine not picked yet

Pick the engine above first: the WRX came with 2, 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 WRX · 2002

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

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

  • No engine is recorded for this vehicle.

matched on year only

What to look out for

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

  • Costly issue

    Inspect rear wheel arch lips and inner seams closely - push along the inner arch seam and feel for softness indicating rust through.

    See why

    Rear Wheel Arch and Sill Rust (JDM Imports)

    Japanese domestic market WRX imports entering NZ from the 1990s onwards are susceptible to rust in the rear wheel arches, inner sills, and floor pan due to NZ's wetter climate relative to Japan's drier regions. Factory underseal is thin and cracks with age, allowing salt and moisture ingress. The rear inner arch seams and the sill drain channels are the primary rust initiation points. Structural sill rust is a WoF failure and can compromise body rigidity.

    What you would notice

    • Bubbling paint on rear wheel arches
    • Rust visible at bottom of door sills
    • Soft or spongy floor pan when pressing underfoot
    • Musty smell inside cabin
    • Visible rust holes or perforation in wheel arch lips

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

  • Costly issue

    Check coolant colour and condition - it should be clean, not brown or rusty.

    See why

    Radiator and Cooling System Neglect Leading to Overheating

    All EJ-series WRX engines are sensitive to cooling system condition. Radiators on GC8/GD/GH era cars commonly develop electrolytic corrosion between the aluminium core and plastic end tanks, causing internal coolant passage blockage or end tank cracking. Subaru's coolant change intervals are frequently ignored on JDM imports with unknown service histories. A marginal cooling system combined with NZ summer temperatures or sustained motorway driving causes overheating that triggers or accelerates head gasket failure.

    What you would notice

    • Temperature gauge climbing above normal operating range
    • Coolant overflow bottle frequently needing top-up
    • Coolant appearing brown, rusty, or with sediment
    • Steam or coolant smell from engine bay
    • Heater output reduced (blocked heater core)

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

  • Costly issue

    With engine warm, inspect the turbocharger oil feed and return lines for seeping or wet oil.

    See why

    Turbocharger Oil Feed Line and Return Seal Leaks

    EJ-series WRX turbochargers develop oil leaks from the feed and return lines due to heat cycling, age of rubber seals, and oil pressure changes from extended idling or hard shutdowns. Oil leaks at the turbo feed banjo bolt, return line gaskets, or the turbo centre section seals are common on high-mileage examples. Oil burning through the exhaust manifold area causes smoke and fire risk if left unaddressed. Also common on GC8/GD turbo drain back pipes which crack with age.

    What you would notice

    • Blue or grey smoke from engine bay or exhaust on startup after sitting
    • Oil burning smell from engine bay under load
    • Oil level dropping faster than expected with no visible puddle under car
    • Oil residue around turbocharger or exhaust manifold area
    • Smoke appearing after hard driving when pulling up at lights

    Typically $300–$1,400 to put right.

  • Costly issue

    With the bonnet open, have someone turn the steering wheel lock to lock while you press down on the strut top mount and feel for play or roughness.

    See why

    Front Strut Top Mount / Bearing Collapse

    GD/GG and GH/GR WRX strut top mounts and bearing plates are a known wear item that collapses prematurely compared to other vehicles of the same era. The WRX's stiffer suspension and performance use accelerates wear. Failed top mounts cause a characteristic clunking when steering from lock to lock and over bumps, and allow the strut to pivot on a seized bearing rather than rotating smoothly, causing tyre scrub, uneven wear, and vague steering response.

    What you would notice

    • Clunking or knocking from front suspension over bumps
    • Clunking when steering from lock to lock while stationary
    • Vague or notchy steering feel
    • Uneven front tyre wear
    • Grinding sensation through steering wheel when turning

    Typically $400–$1,100 to put right.

  • Costly issue

    Rock the wheel at 12 and 6 o'clock checking for play.

    See why

    Front Wheel Bearing Failure - AWD Stress

    All WRX generations (GC8 through VA) experience accelerated front wheel bearing wear compared to FWD equivalents. The symmetrical AWD system places higher constant loading on front bearings, and the WRX's combination of AWD torque, performance driving, and NZ/AU road conditions worsens wear rates. Track use, kerb strikes, and neglected alignment dramatically shorten bearing life. Failure is progressive and, if ignored, leads to catastrophic bearing collapse and potential wheel separation.

    What you would notice

    • Droning or humming noise from front wheels that changes with speed
    • Noise changes when turning left or right (load-shifting test)
    • Vibration through steering wheel at speed
    • Roughness or play felt when rocking wheel at 12 and 6 o'clock
    • Grinding noise at low speed in carparks

    Typically $350–$900 to put right.

Subaru WRX service schedule

The 2 engines a 2002 Subaru WRX 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.

Subaru WRX STi (Bugeye) · 2001–2002 · 2.0L Turbo EJ207 - 206kW

Petrol

Due by distance

  1. 100,000 km

    A key point for replacing the timing belt and refreshing the cooling system.

  2. 150,000 km

    Inspect the suspension components thoroughly and check the turbocharger is still healthy.

  3. 200,000 km

    Assess the major gaskets and internal engine seals so the EJ207 keeps running sweetly.

Subaru WRX (Bugeye) · 2000–2002 · 2.0L Turbo EJ205 - 160kW

Petrol

Due by distance

  1. 100,000 km

    Time for the first big timing belt and water pump service.

  2. 150,000 km

    Suspension bushings and struts often need refreshing here to keep that signature Subaru handling.

  3. 200,000 km

    Expect a close look at the cooling system hoses, and the turbocharger seals may need attention too.

See all 12 issues for this oneDocumented for the exact year and engine you picked, including 4 rated critical.
Engine, transmission & cooling1

01Radiator and Cooling System Neglect Leading to Overheating

Check coolant colour and condition - it should be clean, not brown or rusty.petrol1992–2014Cooling
CommonCooling $500–$1,800 to fix

All EJ-series WRX engines are sensitive to cooling system condition. Radiators on GC8/GD/GH era cars commonly develop electrolytic corrosion between the aluminium core and plastic end tanks, causing internal coolant passage blockage or end tank cracking. Subaru's coolant change intervals are frequently ignored on JDM imports with unknown service histories. A marginal cooling system combined with NZ summer temperatures or sustained motorway driving causes overheating that triggers or accelerates head gasket failure.

Symptoms to notice

  • Temperature gauge climbing above normal operating range
  • Coolant overflow bottle frequently needing top-up
  • Coolant appearing brown, rusty, or with sediment
  • Steam or coolant smell from engine bay
  • Heater output reduced (blocked heater core)

What to check

  1. Check coolant colour and condition - it should be clean, not brown or rusty.
  2. Inspect radiator for corrosion at end tanks and core damage.
  3. Check all hoses for softness, cracking, or swelling.
  4. With engine warm, verify the thermostat opens properly (upper hose should become hot).
  5. Look for any weeping from radiator end tanks.

Where to look: Radiator, coolant hoses, thermostat housing, and header tank at the front of the engine bay

Parts involved: Radiator.

Ask the seller

  • “When was the coolant last flushed and replaced?”
  • “Has the radiator ever been replaced or repaired?”
  • “Has the car ever run hot or overheated?”
  • “Do you have service records showing cooling system maintenance?”
Body, brakes, suspension & interior3

02Rear Wheel Arch and Sill Rust (JDM Imports)

Inspect rear wheel arch lips and inner seams closely - push along the inner arch seam and feel for softness indicating rust through.petrol1992–2021Body & Rust
CommonBody & Rust $800–$4,500 to fix

Japanese domestic market WRX imports entering NZ from the 1990s onwards are susceptible to rust in the rear wheel arches, inner sills, and floor pan due to NZ's wetter climate relative to Japan's drier regions. Factory underseal is thin and cracks with age, allowing salt and moisture ingress. The rear inner arch seams and the sill drain channels are the primary rust initiation points. Structural sill rust is a WoF failure and can compromise body rigidity.

Symptoms to notice

  • Bubbling paint on rear wheel arches
  • Rust visible at bottom of door sills
  • Soft or spongy floor pan when pressing underfoot
  • Musty smell inside cabin
  • Visible rust holes or perforation in wheel arch lips

What to check

  1. Inspect rear wheel arch lips and inner seams closely - push along the inner arch seam and feel for softness indicating rust through.
  2. Check door sill ends and lower sill edges with a screwdriver (light probing).
  3. Look under the carpet at the floor pan corners.
  4. Inspect the spare wheel well for standing water or rust.
  5. If a workshop inspection is possible: Check jacking points for structural integrity.

Where to look: Rear wheel arches (inner seams and lips), door sills, floor pan corners, and spare wheel well

Parts involved: Body corrosion.

Ask the seller

  • “Has the car ever had any rust repairs done?”
  • “How long has the car been in NZ and where was it kept (coastal/inland)?”
  • “Has the underbody ever been treated or rust-proofed?”
  • “Is there any bubbling paint around the wheel arches?”

03Front Strut Top Mount / Bearing Collapse

With the bonnet open, have someone turn the steering wheel lock to lock while you press down on the strut top mount and feel for play or roughness.petrol2000–2014Suspension
CommonSuspension $400–$1,100 to fix

GD/GG and GH/GR WRX strut top mounts and bearing plates are a known wear item that collapses prematurely compared to other vehicles of the same era. The WRX's stiffer suspension and performance use accelerates wear. Failed top mounts cause a characteristic clunking when steering from lock to lock and over bumps, and allow the strut to pivot on a seized bearing rather than rotating smoothly, causing tyre scrub, uneven wear, and vague steering response.

Symptoms to notice

  • Clunking or knocking from front suspension over bumps
  • Clunking when steering from lock to lock while stationary
  • Vague or notchy steering feel
  • Uneven front tyre wear
  • Grinding sensation through steering wheel when turning

What to check

With the bonnet open, have someone turn the steering wheel lock to lock while you press down on the strut top mount and feel for play or roughness. Bounce each front corner firmly and listen for clunking. Inspect the rubber top mount for cracking and the bearing plate for corrosion or roughness.

Where to look: Front strut top mount and bearing plate, inside the engine bay at the top of each front strut tower

Parts involved: Shock absorber / strut.

Ask the seller

  • “Has the front suspension ever been serviced or the struts replaced?”
  • “Is there any clunking over bumps or when steering?”
  • “Has the car been used on track or driven hard on rough roads?”

04Front Wheel Bearing Failure - AWD Stress

Rock the wheel at 12 and 6 o'clock checking for play.petrol1992–2021Suspension
CommonSuspension $350–$900 to fix

All WRX generations (GC8 through VA) experience accelerated front wheel bearing wear compared to FWD equivalents. The symmetrical AWD system places higher constant loading on front bearings, and the WRX's combination of AWD torque, performance driving, and NZ/AU road conditions worsens wear rates. Track use, kerb strikes, and neglected alignment dramatically shorten bearing life. Failure is progressive and, if ignored, leads to catastrophic bearing collapse and potential wheel separation.

Symptoms to notice

  • Droning or humming noise from front wheels that changes with speed
  • Noise changes when turning left or right (load-shifting test)
  • Vibration through steering wheel at speed
  • Roughness or play felt when rocking wheel at 12 and 6 o'clock
  • Grinding noise at low speed in carparks

What to check

  1. Rock the wheel at 12 and 6 o'clock checking for play.
  2. Drive at 60-80 km/h and weave gently - a change in drone pitch indicates a failing bearing.
  3. Check for any kerb or pothole damage history.
  4. If a workshop inspection is possible: Jack each front corner and rotate wheel by hand - feel for roughness or grinding.

Where to look: Front wheel hub/bearing assemblies, both left and right sides

Parts involved: Wheel bearing.

Ask the seller

  • “Has the car been used on track or driven hard?”
  • “Have the front wheel bearings been replaced and if so when?”
  • “Has the car had any kerb or pothole damage?”
  • “Is there any humming or droning noise at highway speed?”
Fluid leaks1

05Turbocharger Oil Feed Line and Return Seal Leaks

With engine warm, inspect the turbocharger oil feed and return lines for seeping or wet oil.petrol1992–2014Fluid Leaks
CommonFluid Leaks $300–$1,400 to fix

EJ-series WRX turbochargers develop oil leaks from the feed and return lines due to heat cycling, age of rubber seals, and oil pressure changes from extended idling or hard shutdowns. Oil leaks at the turbo feed banjo bolt, return line gaskets, or the turbo centre section seals are common on high-mileage examples. Oil burning through the exhaust manifold area causes smoke and fire risk if left unaddressed. Also common on GC8/GD turbo drain back pipes which crack with age.

Symptoms to notice

  • Blue or grey smoke from engine bay or exhaust on startup after sitting
  • Oil burning smell from engine bay under load
  • Oil level dropping faster than expected with no visible puddle under car
  • Oil residue around turbocharger or exhaust manifold area
  • Smoke appearing after hard driving when pulling up at lights

What to check

  1. With engine warm, inspect the turbocharger oil feed and return lines for seeping or wet oil.
  2. Check around the turbo housing flanges and wastegate.
  3. Look for oil residue baked onto the exhaust manifold and downpipe.
  4. Check oil level and note how quickly it drops between services.
  5. Inspect for blue smoke on initial startup after cold soak.

Where to look: Turbocharger oil feed and return lines, centre cartridge seals; exhaust side of engine bay

Parts involved: Turbocharger.

Ask the seller

  • “Has the turbocharger ever been serviced or rebuilt?”
  • “Is there any smoke on startup or under hard acceleration?”
  • “How quickly does the oil level drop between changes?”
  • “Has the car been allowed to cool down before shutdown after hard driving?”
Depends on the exact engine — 7 moreDocumented for a specific engine we could not confirm from what you picked. Check the engine code on the car.
Engine, transmission & cooling7

01EJ20/EJ257 Ringland Piston Failure

Check for evidence of tuning (aftermarket ECU, pod filter, intercooler).petrol1992–2011EngineRead the full fault: symptoms, where to look, what to ask the seller

02EJ205 Phase 2 Head Gasket Failure at High Mileage (GD/GG 2.0T WRX)

Check oil filler cap and dipstick for milky residue indicating coolant mixing with oil.petrol2000–2007Engine
OccasionalEngine $1,800–$3,800 to fix

Can't confirm for this car

Subaru revised the EJ20 head gasket design for the GD/GG generation, but coolant and combustion gas leaks remain a documented failure mode on higher-kilometre examples, particularly those with a history of modified boost, infrequent coolant maintenance, or any prior overheating event. The improved Phase 2 gasket extends service life compared to Phase 1 units but is not immune to failure. NZ/AU used imports typically arrive with unknown coolant maintenance histories, making this a mandatory inspection point. Repair requires engine removal and head surface inspection and potentially machining.

A removed multi-layer steel head gasket held up, showing staining around the cylinder bore.Example of the part — not this vehicle

A used multi-layer head gasket. Discolouration between a cylinder and a water gallery is the tell.

John Furman · CC BY-SA 3.0 · Wikimedia Commons

Symptoms to notice

  • White exhaust smoke especially once the engine is warmed up
  • Coolant loss without any visible external leak
  • Milky or oily contamination in coolant overflow bottle
  • Overheating under sustained load or highway driving

What to check

  1. Check oil filler cap and dipstick for milky residue indicating coolant mixing with oil.
  2. Inspect coolant overflow bottle for brown oily scum at the waterline.
  3. A block tester (combustion gas sniff test) on the coolant reservoir is the most reliable way to confirm exhaust gases are entering the cooling system.

Where to look: Cylinder head gaskets on the EJ205 flat-four; most commonly manifests between cylinders 2 and 3

Parts involved: Head gasket.

Ask the seller

  • “Has the head gasket ever been replaced, and what specification gasket was used?”
  • “Is there any overheating history on the car?”
  • “When was the coolant last flushed, and what is the coolant condition?”

03EJ20/EJ257 AVCS Cam Gear Retaining Bolt Loosening

Retrieve any stored fault codes - AVCS cam position errors are a strong indicator.petrol2000–2011Engine
OccasionalEngine $600–$2,200 to fix

Can't confirm for this car

Subaru's Active Valve Control System (AVCS) variable valve timing uses a cam gear secured by a central retaining bolt. On EJ205, EJ20X, EJ20Y, and EJ257 engines (GD/GG and GH/GR generations), this bolt is known to back out under sustained high-RPM operation. A loose cam gear causes incorrect valve timing, rough running, and if it backs out fully can cause the cam gear to spin on the camshaft, resulting in catastrophic timing failure. Documented across multiple continents with specific torque re-torque service bulletins issued.

Symptoms to notice

  • Rough idle that worsens when warm
  • Poor throttle response or hunting idle
  • Check engine light with cam position sensor codes (P0011, P0021 or similar)
  • Rattling or ticking from cam timing area on startup
  • Loss of power across the rev range

What to check

Retrieve any stored fault codes - AVCS cam position errors are a strong indicator. If accessible, check cam gear bolt torque (Subaru issued re-torque guidance). Listen for timing chain or gear rattle on cold start. Check service history for any AVCS-related work.

Where to look: Intake camshaft AVCS gear on each cylinder bank, accessible from the cam cover area

Ask the seller

  • “Has the AVCS cam gear bolt ever been inspected or re-torqued?”
  • “Are there any check engine lights or stored fault codes?”
  • “Has the car had any rough idle or hesitation issues?”

04EJ20/EJ205 Water Pump Plastic Impeller Failure (GC/GF and GD/GG)

Monitor the coolant temperature gauge closely during a sustained test drive under load, including hills.petrol1994–2007Cooling
CommonCooling $450–$950 to fix

Can't confirm for this car

Subaru's factory water pump on EJ-series engines uses a plastic impeller that degrades and spins free on its shaft over time, dramatically reducing coolant flow without triggering any visible external leak. The failure is insidious — the pump still turns and appears normal externally, but coolant is barely circulating, leading to gradual or sudden overheating. An overheating event in an EJ Subaru with a failed impeller frequently precedes head gasket failure. The pattern is documented across GC/GF and GD/GG WRX and STI models spanning 1994 to 2007. Replacement with an aftermarket metal-impeller unit is the accepted long-term fix.

Symptoms to notice

  • Gradual or intermittent engine overheating with no visible coolant leak
  • Temperature gauge creeping high under sustained load
  • Coolant level dropping with no visible external leak
  • Overheating events that cool once stationary (fan working but coolant not circulating)

What to check

  1. Monitor the coolant temperature gauge closely during a sustained test drive under load, including hills.
  2. Check the coolant reservoir level and condition.
  3. Ask specifically about any overheating history — a past overheat is a major red flag for downstream head gasket damage on these engines.

Where to look: Water pump on the front of the EJ engine block, driven by the cambelt

Parts involved: Water pump.

Ask the seller

  • “Has the water pump been replaced? If so, was it replaced with a metal-impeller unit?”
  • “When was the cambelt last replaced — was the water pump changed at the same time?”
  • “Has the car ever overheated?”

05EJ20/EJ25 Head Gasket Failure

Check the oil filler cap and dipstick for any creamy or mayonnaise-like emulsion.petrol2001–2014Engine
CommonEngine $1,800–$4,500 to fix

Can't confirm for this car

The EJ-series engines use a multi-layer steel (MLS) head gasket that seals between the aluminium cylinder head and the iron or aluminium block. Thermal cycling between the two dissimilar metals causes differential expansion rates that progressively fatigue the gasket fire-ring. On turbocharged applications, elevated coolant temperatures from heat soak, stuck thermostats, or coolant system neglect accelerate this failure. EJ25 engines (2.5 litre, used in the WRX from 2006 and in later STI models) are reported as more prone than EJ20 units because the larger bore leaves less metal between cylinders. Failure modes include external coolant leaks at the block-head joint, internal coolant-to-oil mixing, and combustion gas leaks that cause coolant system pressurisation. Many examples have had head gaskets replaced once already by 150,000 km.

A removed multi-layer steel head gasket held up, showing staining around the cylinder bore.Example of the part — not this vehicle

A used multi-layer head gasket. Discolouration between a cylinder and a water gallery is the tell.

John Furman · CC BY-SA 3.0 · Wikimedia Commons

Symptoms to notice

  • Coolant loss without visible external leak
  • White smoke from exhaust at operating temperature
  • Creamy white emulsion on oil filler cap or dipstick
  • Coolant reservoir bubbling at operating temperature
  • Engine overheating or temperature gauge fluctuation
  • Sweet smell from engine bay or exhaust

What to check

Check the oil filler cap and dipstick for any creamy or mayonnaise-like emulsion. A combustion leak tester (block tester with chemical dye) should be used on the coolant reservoir. Inspect the engine bay and block-head junction for any coolant residue or mineral deposits. If a workshop inspection is possible: With engine at operating temperature, remove the radiator cap (engine cold first) and look for bubbling in the coolant — combustion gases entering the coolant is a definitive sign.

Where to look: Cylinder head gasket — both left and right banks of the horizontally-opposed engine

Parts involved: Head gasket.

Ask the seller

  • “Have the head gaskets been replaced, and at what mileage?”
  • “Has the engine ever overheated?”
  • “Is there a full cooling system service history?”
  • “Has the car ever run low on coolant?”

06DCCD Centre Differential Bearing Wear (GD/GG STI EJ207/EJ257)

During a test drive, cycle through the DCCD lock settings while driving straight at moderate speed and listen for changes in vibration or drone.petrol2000–2007Transmission
OccasionalTransmission $900–$3,000 to fix

Can't confirm for this car

The Driver Controlled Centre Differential (DCCD) fitted to GD/GG STI models combines mechanical and electromagnetic clutch packs with internal bearings sensitive to fluid degradation and deferred service intervals. Worn DCCD bearings produce a rumbling vibration felt through the drivetrain, most obvious on light throttle at steady speed. Failure of the electromagnetic clutch pack or bearing assembly causes the DCCD to lose differential control, leaving the centre diff stuck in full lock or free mode depending on the failure direction. Full DCCD rebuilds are expensive; regular differential fluid changes at Subaru-specified intervals can significantly extend service life and delay bearing wear.

Symptoms to notice

  • Rumbling or droning vibration through the drivetrain at light throttle cruise
  • DCCD warning light or erratic DCCD lock display
  • Vibration character that changes when cycling DCCD lock settings
  • Clunking from the centre of the car during load changes

What to check

  1. During a test drive, cycle through the DCCD lock settings while driving straight at moderate speed and listen for changes in vibration or drone.
  2. Check for any warning lights on the DCCD dashboard controller.
  3. Ask the seller for the DCCD and transfer case fluid service history.

Where to look: Centre differential unit within the gearbox/transfer case assembly, beneath the cabin floor

Parts involved: Differential.

Ask the seller

  • “Has the DCCD fluid ever been serviced? If so, when and with what fluid specification?”
  • “Has any drivetrain vibration or DCCD warning light ever been present?”
  • “Has the DCCD unit ever been repaired or rebuilt?”

07Rear LSD Clutch-Type Differential Chatter from Fluid Degradation (GD/GG STI)

Drive slowly in full-lock circles in both directions in a car park and feel for juddering through the floor or steering wheel.petrol2000–2007Transmission
CommonTransmission $150–$650 to fix

Can't confirm for this car

The WRX STI rear limited-slip differential uses clutch packs that require specific friction-modifier fluid to operate smoothly. When the differential fluid degrades or is replaced with an incorrect specification, the clutch packs generate a juddering or chattering sensation during low-speed tight-radius turns such as car park manoeuvres or U-turns. This is primarily a maintenance failure rather than a mechanical fault, but deferred fluid changes are extremely common on NZ and AU used imports. If left without a fluid change for extended periods, the clutch pack friction material wears beyond the point where a fluid change alone can resolve the juddering.

Symptoms to notice

  • Juddering or chattering from the rear of the car during slow tight-radius turns
  • Vibration through the floor and steering wheel when parking at full lock
  • Clunking felt through the car body during low-speed cornering

What to check

Drive slowly in full-lock circles in both directions in a car park and feel for juddering through the floor or steering wheel. If juddering is present, a fluid change may resolve it; if the vibration is severe or persists after fresh fluid, internal clutch pack wear is likely requiring differential rebuild.

Where to look: Rear limited-slip differential

Parts involved: Differential, Clutch.

Ask the seller

  • “When was the rear differential fluid last changed, and with what specification fluid?”
  • “Has any juddering or chattering been noticed when turning or parking at low speed?”
  • “Was the correct LSD-specification differential fluid used at the last service?”
Other Subaru WRX engines and years29 documented issues that do not apply to the one you picked.
Engine, transmission & cooling21

01FA24F Rod and Main Bearing Wear Concerns (VB WRX)

Check and document oil change history - intervals over 6,000 km are concerning.petrol2022 onwardEngine
OccasionalEngine $7,000–$16,000 to fix

Does not apply

The FA24F 2.4T engine in the VB WRX (2022-present) shares its fundamental architecture with the FA20DIT and early production examples have shown similar bearing wear concerns flagged by the WRX owner community. While the FA24F has a larger bore and is detuned relative to the Outback XT application, early owner reports and oil analysis data from WRX forums indicate accelerated bearing wear in cars subjected to short oil change intervals or hard use. The issue is still developing as the fleet ages but the pattern matches FA20DIT closely enough that preemptive oil analysis is strongly recommended.

Symptoms to notice

  • Knocking from lower engine under load
  • Metallic particles visible in drained oil
  • Oil pressure fluctuation warning
  • Engine noise increasing with mileage

What to check

  1. Check and document oil change history - intervals over 6,000 km are concerning.
  2. Send an oil sample for analysis before purchase if possible.
  3. Check for any engine noise at idle and under load.
  4. Verify the car has not been used on track.
  5. Check if previous owner used full synthetic oil meeting Subaru's specification.

Where to look: Connecting rod and main bearings within the FA24F engine block

Ask the seller

  • “What oil change interval has been maintained and do you have receipts?”
  • “Has the oil ever been sent for analysis?”
  • “Has the car been used on a track or for performance driving?”
  • “What brand and grade of engine oil has been used?”

02FA20DIT Rod Bearing Failure (VA WRX)

Check the service history very carefully - oil changes must be documented at 5,000 km intervals or less.petrol2014–2021EngineRead the full fault: symptoms, where to look, what to ask the seller

03FA20DIT Piston Ringland Failure Under Boost

Check for blue or white smoke on hard acceleration and at idle.petrol2015–2021EngineRead the full fault: symptoms, where to look, what to ask the seller

04Lineartronic CVT TR580/TR690 Belt and Bearing Failure

During a test drive, perform a moderate full-throttle acceleration from 50 km/h to 100 km/h and feel for any slip, shudder, or hesitation.petrol2015–2021Transmission
OccasionalTransmission $5,500–$13,000 to fix

Does not apply

The VA-chassis WRX automatic uses Subaru's Lineartronic continuously variable transmission (TR580 or TR690 depending on market). The steel push-belt that transfers drive between the primary and secondary pulleys is designed for a specific torque range and thermal envelope. In WRX applications the FA20DIT produces torque peaks that stress the belt clamping force limits, and prolonged high-load driving — towing, mountain passes, repeated full-throttle acceleration — causes belt micro-slip that generates heat and progressive belt element wear. The CVT fluid degrades faster than the factory 100,000 km service interval suggests under performance use, and degraded fluid reduces clamping efficiency, accelerating belt and pulley surface wear. Secondary pulley bearings also fail on higher-mileage units. Complete transmission replacement is the typical repair as remanufactured units are expensive and rebuilds require specialist tooling.

Symptoms to notice

  • Shuddering or jerking during light throttle cruising
  • Slipping sensation — engine revs rise without corresponding vehicle acceleration
  • Whining or grinding noise from transmission under load
  • CVT warning light or transmission overheat indicator
  • Unusual fuel consumption increase
  • Delayed engagement from standstill

What to check

  1. During a test drive, perform a moderate full-throttle acceleration from 50 km/h to 100 km/h and feel for any slip, shudder, or hesitation.
  2. Inspect CVT fluid colour at the dipstick — should be pink/light red and clean; dark brown or burnt-smelling fluid indicates thermal abuse.
  3. Check service records for CVT fluid change history.
  4. Request a scan tool health check for transmission temperature and adaptation data.

Where to look: Transmission — CVT unit mounted transversely behind engine in engine bay

Parts involved: CVT belt and pulleys.

Ask the seller

  • “Has the CVT fluid ever been changed, and at what mileage?”
  • “Has the car been used for towing?”
  • “Has the transmission ever overheated or shown a warning light?”
  • “Has the car been driven consistently with sport or manual mode?”

05EJ257 2.5T Ringland/Piston Failure Under Boost (GD/GG and GE/GH STI)

Listen carefully for knock under hard throttle application.petrol2004–2014EngineRead the full fault: symptoms, where to look, what to ask the seller

06EJ257 2.5T Connecting Rod Bearing Failure at High Mileage (GD/GG and GE/GH STI)

Listen carefully at idle and through the full rev range for a deep, rhythmic knocking sound that increases with engine speed.petrol2012–2014Engine
OccasionalEngine $4,500–$10,000 to fix

Does not apply

At higher mileages (typically above 150,000 km), EJ257 engines are susceptible to connecting rod bearing wear that can progress rapidly to spun bearings and catastrophic engine failure. The failure is linked to oil viscosity breakdown from extended service intervals, oil starvation under hard cornering at low oil levels, and inherent crankshaft journal finish tolerances in the EJ257 short block. Subaru issued extended powertrain warranty provisions in some export markets specifically acknowledging the rod bearing failure pattern on high-mileage STIs. The knocking onset can be rapid, and continued driving after first signs of knock results in total engine destruction requiring short-block replacement.

Symptoms to notice

  • Deep low-frequency knocking or rumbling from the engine under load
  • Knock most pronounced under hard acceleration or immediately after cold start
  • Oil pressure warning light illuminating at idle on worn examples
  • Metal particles or debris in oil at service drain

What to check

  1. Listen carefully at idle and through the full rev range for a deep, rhythmic knocking sound that increases with engine speed.
  2. Check the oil service history for any evidence of extended intervals beyond 5,000 km.
  3. Verify current oil level and condition.
  4. If a workshop inspection is possible: If the seller can provide oil analysis results, look for elevated iron and copper levels indicating bearing wear.

Where to look: EJ257 short block connecting rod big-end bearings and crankshaft main journals

Ask the seller

  • “What oil change intervals has this car been run on consistently?”
  • “Has any engine knock or tapping ever been noticed?”
  • “Has the car been used for track days where oil starvation under lateral G-forces could occur?”

07EJ25 STI Head Gasket Failure

Inspect coolant reservoir for brown oily residue or emulsification.petrol2014–2021Engine
Very commonEngine $3,200–$7,500 to fix

Does not apply

The EJ25 2.5-litre turbocharged flat-four used in WRX STI models has a well-documented multi-layer steel (MLS) head gasket failure pattern, most pronounced on the rear cylinder on each bank. The combination of high cylinder pressures, a wide bore, and aluminium heads on a cast-iron block produces differential thermal expansion that causes the head gasket to weep or blow — typically between coolant and oil passages, or externally. Failure accelerates on vehicles that have been driven hard, run lean, or have experienced any overheating episode. The factory torque-to-yield head bolts further complicate repair, as they must be replaced on reassembly.

A removed multi-layer steel head gasket held up, showing staining around the cylinder bore.Example of the part — not this vehicle

A used multi-layer head gasket. Discolouration between a cylinder and a water gallery is the tell.

John Furman · CC BY-SA 3.0 · Wikimedia Commons

Symptoms to notice

  • Coolant loss without visible external leak — coolant is consumed into combustion chamber
  • White sweet-smelling steam from exhaust, particularly after the engine reaches operating temperature
  • Brown or milky contamination in coolant reservoir or on oil dipstick
  • Overheating or fluctuating temperature gauge, especially under load
  • Rough running or misfires on one or more cylinders due to coolant entering combustion

What to check

  1. Inspect coolant reservoir for brown oily residue or emulsification.
  2. Check oil filler cap and dipstick for white mayonnaise-like deposits indicating coolant ingress.
  3. Look for white steam from exhaust at operating temperature.
  4. Inspect the underside of the engine for external coolant seepage around the head/block junction.
  5. If a workshop inspection is possible: A cooling system pressure test and combustion gas (CO2) test of the coolant are the definitive checks.

Where to look: Cylinder head mating surfaces — typically rear of left and right bank

Parts involved: Head gasket.

Ask the seller

  • “Has the head gasket ever been replaced, and if so, were OEM-spec head bolts and ARP studs used on reassembly?”
  • “Has the car ever overheated or has the temperature gauge ever risen above the normal midpoint?”
  • “Can you provide a current coolant system pressure test and a combustion gas test result?”

08EJ207 head gasket failure between coolant and oil (2.0 EJ207 turbo, JDM VAB WRX STI 2014-2019)

Check the oil on the dipstick for milky or cream-coloured emulsification indicating coolant mixing with oil.petrol2014–2019Engine
CommonEngine $2,000–$6,000 to fix

Does not apply

The 2.0 EJ207 turbo boxer in the Japanese-market VAB WRX STI (2014-2019) can suffer head gasket failure between the coolant and oil passages at high mileage or after overheating events. Coolant and oil cross-contaminate, causing rapid engine damage if not detected promptly. The VA WRX uses the 2.0 FA20 turbo and export STIs the 2.5 EJ257, so this does not apply to them.

A removed multi-layer steel head gasket held up, showing staining around the cylinder bore.Example of the part — not this vehicle

A used multi-layer head gasket. Discolouration between a cylinder and a water gallery is the tell.

John Furman · CC BY-SA 3.0 · Wikimedia Commons

Symptoms to notice

  • Milky or cream-coloured emulsification on the oil dipstick from coolant contamination
  • Coolant level dropping without a visible external leak as coolant enters the oil system

What to check

  1. Check the oil on the dipstick for milky or cream-coloured emulsification indicating coolant mixing with oil.
  2. Check the coolant expansion tank for oily residue.
  3. Perform a combustion gas test on the coolant.

Where to look: Cylinder head gaskets on both heads of the EJ207 boxer engine

Parts involved: Head gasket, Turbocharger.

Ask the seller

  • “Has the ej207 head gasket failure between been inspected or repaired?”

09EJ20 Phase 1 Head Gasket Failure (GC/GF 2.0T)

Check the coolant overflow bottle for brown oily scum at the waterline.petrol1994–2000Engine
Very commonEngine $1,800–$3,800 to fix

Does not apply

The first-generation EJ20 turbo uses a single-layer metal shim head gasket poorly suited to the thermal cycling of turbocharged use, leading to coolant and combustion gas leaks predominantly between cylinders 2 and 3. Failure is accelerated by overheating events, deferred coolant flushes, or sustained boost use. Consequences range from coolant loss and white exhaust smoke to catastrophic hydro-lock if coolant enters a cylinder. This is considered near-universal on unmodified high-kilometre GC/GF examples and is one of the most extensively documented faults across all Subaru WRX forums worldwide.

A removed multi-layer steel head gasket held up, showing staining around the cylinder bore.Example of the part — not this vehicle

A used multi-layer head gasket. Discolouration between a cylinder and a water gallery is the tell.

John Furman · CC BY-SA 3.0 · Wikimedia Commons

Symptoms to notice

  • White or sweet-smelling exhaust smoke when warmed up
  • Coolant loss with no visible external leak
  • Milky or frothy residue on oil dipstick or filler cap
  • Overheating gauge fluctuation under load
  • Bubbles or oily scum in coolant reservoir

What to check

  1. Check the coolant overflow bottle for brown oily scum at the waterline.
  2. Run the engine to full operating temperature and watch for white exhaust smoke.
  3. A block-tester (combustion gas) check on the coolant reservoir is the most definitive test.
  4. Remove the oil filler cap and dipstick and look for milky or caramel-coloured residue indicating coolant contamination.

Where to look: Cylinder head mating faces on the EJ20 flat-four, most commonly between cylinders 2 and 3 (centre of the engine)

Parts involved: Head gasket.

Ask the seller

  • “Has the head gasket been replaced? If so, what specification gasket was used — single-layer OEM or multi-layer steel?”
  • “Has the coolant been flushed on schedule, and what is the coolant age?”
  • “Has the car ever overheated, even briefly?”

10VB WRX Lineartronic Sport CVT - High-Torque Stress (FA24F)

Test the car from cold with a gentle pull-away - feel for any shudder or vibration.petrol2022 onwardTransmission
OccasionalTransmission $900–$14,000 to fix

Does not apply

The VB WRX uses a revised Lineartronic Sport CVT paired with the higher-torque FA24F 2.4T engine. The same fundamental judder, shudder, and fluid degradation issues seen in the VA CVT apply to the VB, with the added stress of increased engine torque. Early VB owners report similar low-speed shudder patterns and the same sensitivity to fluid condition. Subaru has not issued a recall or formal bulletin as of mid-2026 but the pattern from VA is repeating. CVT fluid changes at 40,000 km with Subaru-genuine fluid are critical.

Symptoms to notice

  • Low-speed shudder when pulling away
  • Hesitation or slip under moderate acceleration
  • Vibration at steady highway cruise speed
  • Transmission fault codes or warning light

What to check

  1. Test the car from cold with a gentle pull-away - feel for any shudder or vibration.
  2. Check CVT fluid service history.
  3. Verify no track use.
  4. The VB fleet in NZ is young so high-mileage examples will be uncommon, but used imports from Australia may have higher kilometres.

Where to look: Lineartronic Sport CVT unit paired to FA24F, mounted in the drivetrain tunnel

Ask the seller

  • “Has the CVT fluid been changed according to schedule?”
  • “Is there any shuddering on light-throttle pullaway?”
  • “Has the car been used on track or for towing?”
  • “Are there any transmission warning lights in the history?”

11Lineartronic CVT shudder, hesitation and slow engagement (VA WRX 2.0 FA20DIT CVT)

Test drive from cold and warm - pull away gently and feel for shudder.petrol2015–2021TransmissionRead the full fault: symptoms, where to look, what to ask the seller

12FA20DIT 2.0T Piston Ring Wear and Excessive Oil Consumption (VA WRX)

petrol2014 onwardEngineRead the full fault: symptoms, where to look, what to ask the seller

13FA20DIT Turbocharger Oil Feed Restriction and Bearing Failure

petrol2015–2021Engine
OccasionalEngine $2,200–$5,500 to fix

Does not apply

The IHI turbocharger fitted to the FA20DIT is fed engine oil through a small-diameter feed line that is vulnerable to partial blockage from sludge accumulation if oil changes are delayed or cheap oil is used. Restricted oil flow starves the centre bearing cartridge, causing premature bearing wear. The condition progresses from shaft play and light smoke to full turbo failure with metallic debris entering the intercooler and intake system. The IHI turbo on this engine runs at high temperature and is particularly sensitive to oil quality and change intervals; five-minute cool-down periods before shutdown are recommended but rarely observed in practice.

Symptoms to notice

  • Blue smoke from exhaust at idle and especially on overrun when lifting off the throttle
  • High-pitched whine or whistle from the turbocharger that changes pitch with RPM
  • Visible shaft play in the turbo impeller when checked by hand
  • Oily black residue inside the intake pipe between the air filter and turbo inlet
  • Loss of boost pressure and reduced power output

What to check

  1. With the engine off and cool, grasp the turbo compressor wheel through the inlet and check for radial and axial shaft play — more than 0.5 mm of radial movement indicates bearing wear.
  2. Inspect the intercooler and charge pipes for oily residue or soot, indicating oil passing the compressor seal.
  3. Check for blue smoke at idle and on overrun.
  4. Review oil service history closely — irregular or long intervals are the primary risk factor.

Where to look: IHI turbocharger — mounted on exhaust manifold under the engine cover; oil feed banjo fitting on top of centre housing

Parts involved: Turbocharger.

Ask the seller

  • “Can you show me a full oil service history with receipts showing the oil brand and grade used?”
  • “Has the turbocharger ever been replaced or rebuilt, and has a boost leak test been performed recently?”

14Rear Differential Failure Under Hard or Track Use

petrol2014–2023Transmission
OccasionalTransmission $1,500–$4,800 to fix

Does not apply

The rear differential on WRX models and the mechanical Torsen LSD on WRX STI models can fail on vehicles that have been driven hard, tracked, or used with mismatched tyre circumferences. The all-wheel-drive system is sensitive to unequal tyre wear; even modest circumference differences across all four tyres make the centre differential and rear differential fight each other under load, accelerating wear. STI Torsen units can fail under sustained track use or drag strip launches, resulting in noisy operation and eventual lockup or loss of rear drive.

Symptoms to notice

  • Howling or whining noise from the rear of the vehicle under steady-state load at 50–100 km/h
  • Clunking from the rear differential on initial acceleration or deceleration
  • Vibration through the floor that correlates with vehicle speed rather than engine RPM
  • Binding or tight steering sensation during slow-speed tight turns, indicating centre diff tension
  • Dark, metallic-smelling differential fluid on inspection

What to check

  1. Check all four tyre tread depths with a gauge — any variance greater than 2 mm across the set is a risk factor and should prompt a diff fluid inspection.
  2. During the test drive, listen for a howling or clunking noise from the rear of the car under light load at 50–80 km/h, which changes with acceleration and deceleration.
  3. Inspect the rear diff casing for oil seepage around the input seal and cover gasket.
  4. Ask specifically whether the car has been on a racetrack or drag strip.

Where to look: Rear differential — mounted at rear axle, driven via rear propshaft from the transfer case

Parts involved: Differential.

Ask the seller

  • “Has the car ever been on a racetrack, drag strip, or used in any competitive driving event?”
  • “Have all four tyres been replaced as a matched set at the same time throughout the car's life?”

156-Speed Manual 2nd Gear Synchromesh Wear

During a test drive, make multiple brisk 1–2 upshifts and quick 3–2 downshifts.petrol2014–2021Transmission
CommonTransmission $1,800–$4,500 to fix

Does not apply

The TR580 and TR690 6-speed manual gearboxes used across the WRX and WRX STI lineups exhibit premature synchromesh wear on 2nd gear, and to a lesser extent 3rd gear. The failure presents as a grinding or crunching sensation when engaging 2nd gear, particularly on quick downshifts or aggressive 1–2 upshifts under power. It is exacerbated by spirited driving, clutch-dumping at high RPM, and failure to warm up the transmission oil in cold weather. NHTSA complaints specifically reference 2nd-gear grind on multiple WRX model years. The condition is cumulative and worsens over time if driving style does not change.

Symptoms to notice

  • Grinding or crunching noise when engaging 2nd gear, especially on quick or aggressive shifts
  • Gearbox refusing to slot into 2nd gear and bouncing back to neutral
  • Notchy or baulky feel from the 2nd gear gate that worsens as the transmission warms up
  • Condition improves when shifting slowly but returns under spirited driving
  • Dark or burnt-smelling transmission oil on inspection

What to check

During a test drive, make multiple brisk 1–2 upshifts and quick 3–2 downshifts. Any grinding, crunching, or refusal to engage cleanly indicates synchro wear. Check transmission oil colour and smell — dark, burnt fluid accelerates synchro failure. Ask if the previous owner has changed the transmission fluid and what brand was used (Subaru specifies its own Gear Oil GL-5 75W-90).

Where to look: Gearbox — 2nd gear synchro ring and blocker ring, accessible only with gearbox removal

Parts involved: Clutch.

Ask the seller

  • “Has the transmission oil ever been changed, and if so what product was used and at what mileage?”
  • “Does the gearbox grind or hesitate when engaging 2nd gear, particularly on quick shifts?”

16FA20DIT Internal Water Pump Failure

Check the coolant temperature gauge behaviour during a test drive — any tendency to rise above midpoint under load warrants investigation.petrol2015–2021Cooling
OccasionalCooling $1,400–$3,200 to fix

Does not apply

The FA20DIT uses an internally mounted, timing-chain-driven water pump rather than an externally belt-driven unit. While this design eliminates the timing belt service interval, it places the water pump inside the engine where failure causes immediate and severe consequences. The impeller is plastic and is known to crack or delaminate, reducing coolant flow progressively until the engine overheats. Because the pump is internal, there is no visible external leak as an early warning sign — the first symptom is often a rising temperature gauge. Replacement requires removal of the timing chain cover, making it a significant labour job.

Symptoms to notice

  • Coolant temperature rising above normal midpoint under sustained highway or uphill driving
  • No external coolant leak visible but unexplained coolant level drop over time
  • Heater output weaker than usual despite engine reaching operating temperature
  • Temperature gauge fluctuating rather than sitting steadily at the midpoint
  • In severe cases, overheating event triggering the engine temperature warning light

What to check

  1. Check the coolant temperature gauge behaviour during a test drive — any tendency to rise above midpoint under load warrants investigation.
  2. Inspect the coolant reservoir level and colour.
  3. Ask when the coolant was last changed; degraded coolant accelerates impeller corrosion.
  4. High-mileage examples (over 120,000 km) should have this inspected proactively.
  5. If a workshop inspection is possible: There is no easy external check; a dealer scan tool can log coolant temperature variance under load.

Where to look: Inside engine timing cover — driven off the exhaust camshaft sprocket on the timing chain

Parts involved: Water pump.

Ask the seller

  • “Has the water pump ever been replaced or inspected, and at what odometer reading?”
  • “Has the car ever overheated or has the temperature gauge risen above the normal midpoint during ownership?”

17Centre Differential Viscous Coupling Failure (GC8/GF8)

Drive slowly in a tight circle (both directions) in a carpark - a healthy viscous coupling allows slight slip without binding.petrol1992–2000Transmission
CommonTransmission $1,200–$3,000 to fix

Does not apply

GC8 and GF8 WRX models use a viscous coupling centre differential to distribute torque between front and rear axles. The viscous unit degrades over time - the silicone fluid breaks down, causing the coupling to either seize (locking the centre diff and causing transmission wind-up on tight turns) or slip excessively (reducing AWD traction). Failure is hastened by mismatched tyre sizes or pressures, and by towing. Common on high-mileage JDM imports entering NZ.

Symptoms to notice

  • Tight, binding sensation when turning in carparks or on full lock
  • Clunking or juddering on low-speed turns
  • Transmission vibration or shudder under acceleration
  • Tyres scrubbing or skipping on tight turns
  • Drivetrain binding when reversing and turning

What to check

  1. Drive slowly in a tight circle (both directions) in a carpark - a healthy viscous coupling allows slight slip without binding.
  2. Any juddering, binding, or clunking indicates viscous failure or seizing.
  3. Verify all four tyres are same brand, model, and have matching tread depth (mismatched tyres accelerate failure).

Where to look: Centre differential / transfer case, between gearbox and rear driveshaft

Parts involved: Differential.

Ask the seller

  • “Have all four tyres always been kept matched in size and tread depth?”
  • “Does the car bind or judder when turning tight circles?”
  • “Has the centre differential or transfer case ever been serviced or replaced?”

18FA24 high-pressure fuel pump failure / low fuel-rail pressure (P0087)

Scan for stored or pending P0087 fuel-rail-pressure codes and check whether the ECM software update and any HPFP replacement were done.petrol2022 onwardEngine
OccasionalEngine $1,200–$2,800 to fix

Does not apply

The direct-injection FA24 2.4L turbo boxer in the VB WRX has a documented pattern of high-pressure fuel pump (HPFP) trouble, logging fault code P0087 'fuel rail pressure too low'. Subaru's first-line fix is an ECM software update, and where that does not resolve it the HPFP is replaced; owners have reported repeat failures shortly after replacement, and some early cars failed at very low mileage. Powertrain items are covered under Subaru's factory warranty (5-year in NZ) but many cars are now outside that window or have modified tunes that complicate claims, so buyers should confirm any fuel-system work was completed. Left unaddressed it causes hesitation, limp mode and stalling.

Symptoms to notice

  • Check-engine light with stored code P0087
  • Hesitation, stumble or power loss under load
  • Engine enters limp mode
  • Unexpected stalling, sometimes hard to restart when hot
  • Long crank or no-start

What to check

Scan for stored or pending P0087 fuel-rail-pressure codes and check whether the ECM software update and any HPFP replacement were done; ask for invoices, watch for hesitation or limp-mode on a test drive, and be wary of aftermarket tunes that mask fuel-system behaviour.

Where to look: High-pressure fuel pump on the engine (cam-driven), fuel rail and injectors

Parts involved: High-pressure fuel pump, Fuel rail.

Ask the seller

  • “Has the car ever thrown a P0087 or fuel-related check-engine light?”
  • “Was the ECM software update for the fuel system carried out?”
  • “Has the high-pressure fuel pump ever been replaced, and if so at what mileage?”
  • “Is the car running a stock or aftermarket ECU tune?”

19FA20DIT 2.0T Direct Injection Intake Valve Carbon Buildup (VA WRX)

Ask whether an intake valve walnut-blast cleaning has been performed and at what mileage it was last done.petrol2014 onwardEngineRead the full fault: symptoms, where to look, what to ask the seller

20FA24F Intercooler Inlet Pipe Blow-Off Under High Boost

petrol2022–2023EngineRead the full fault: symptoms, where to look, what to ask the seller

21EJ25 Excessive Oil Consumption Between Service Intervals

Check the oil dipstick level and compare it to the expected level given the stated last service date and mileage.petrol2014–2021Engine
CommonEngine $800–$4,500 to fix

Does not apply

Beyond head gasket failure, the EJ25 flat-four in WRX STI models is documented to consume engine oil at rates significantly above normal — commonly 0.5 to 1.5 litres per 1,000 km on high-mileage or hard-driven examples — due to worn valve stem seals, degraded piston rings, and the horizontally-opposed cylinder layout that pools oil on the lower bank when the engine sits unused. This issue is separate from head gasket failure and can coexist with it. Subaru of America issued guidelines acknowledging elevated oil consumption in EJ-series engines. Running low on oil in an EJ25 without realising it is a common precursor to more serious failures.

Symptoms to notice

  • Blue smoke from exhaust on cold startup that typically clears within 30–60 seconds for lower-bank pooling, but persists if seals are worn
  • Oil level dropping more than one mark on the dipstick between 3,000–5,000 km service intervals
  • Blue tinge to exhaust smoke during hard acceleration at high RPM
  • Oil fouling on spark plugs, visible on inspection as wet or oily electrode deposits
  • Smell of burning oil from the exhaust under load

What to check

Check the oil dipstick level and compare it to the expected level given the stated last service date and mileage. Blue tint to exhaust smoke on startup (from pooled oil on lower cylinders) is normal for boxer engines but should clear within 30 seconds; persistent blue smoke at idle or under acceleration indicates seal wear. Ask the seller to demonstrate the oil level on the dipstick at the time of inspection. If a workshop inspection is possible: A leak-down test identifies whether consumption is ring or valve related.

Where to look: Engine internal — valve stem seals (cylinder head), piston rings (block); lower cylinder bank oil pooling is inherent to the boxer layout

Parts involved: Head gasket.

Ask the seller

  • “How much oil does the car typically consume between scheduled oil changes, and have you had to top it up between services?”
  • “Has a leak-down test or compression test been performed, and what were the results?”
Electrical2

0111.6-inch Starlink touchscreen freezing, black-screen and rebooting

petrol2022 onwardElectrical
CommonElectrical $200–$3,200 to fix

Does not apply

The VB WRX uses Subaru's large portrait 11.6-inch Starlink infotainment unit, which also hosts most HVAC controls, and it has a well-documented tendency to freeze, go black or spontaneously reboot, sometimes sticking on the Starlink logo at startup. Because climate and many vehicle settings live inside the screen, a freeze can leave the driver without fan or temperature control until a restart. Subaru has issued multiple over-the-air and dealer software updates across the shared 11.6-inch platform, and the wider issue drew a US class-action over touchscreen freezing. A temporary reboot (holding the power/volume button) usually restores it, but recurring faults may need a software reflash or, rarely, head-unit replacement.

Symptoms to notice

  • Touchscreen freezes or stops responding to touch
  • Screen goes black or reboots while driving
  • System hangs on the Starlink logo at startup
  • Loss of HVAC control while the screen is frozen
  • CarPlay/Android Auto dropouts or reconnection loops

What to check

During inspection let the car sit and boot fully, then exercise the touchscreen, HVAC controls, reversing camera and CarPlay/Android Auto for several minutes; ask whether the latest infotainment software update has been applied and watch for lag, black-outs or reboots.

Where to look: 11.6-inch centre-dash Starlink infotainment head unit

Ask the seller

  • “Does the screen ever freeze, go black or reboot while driving?”
  • “Has the infotainment software been updated to the latest version?”
  • “Do the climate controls ever become unusable when the screen hangs?”
  • “Does the reversing camera always display promptly in reverse?”

02Electric power steering rack rattle (VA WRX 2.0 turbo 2014-2017, not STI)

Drive over rough surfaces at low speed and listen for rattle from the steering rack area.petrol2014–2017Electrical
CommonElectrical $600–$2,200 to fix

Does not apply

The electric power steering rack on the 2014-2017 VA WRX 2.0 turbo can develop a rattle from the rack (gear box) assembly, most noticeable at low speed over rough surfaces. Subaru issued a service bulletin with a repair procedure for this noise. The STI of the same era uses hydraulic power steering and is not affected. Listen for a rattle from the front of the car over bumps on the test drive.

Symptoms to notice

  • Knocking or rattling from steering rack area at low speeds
  • Vibration through steering wheel during slow manoeuvring

What to check

Drive over rough surfaces at low speed and listen for rattle from the steering rack area.

Where to look: Electric power steering rack assembly

Parts involved: Steering rack, Turbocharger.

Ask the seller

  • “Has the electric power steering rack rattle been inspected or repaired?”
Body, brakes, suspension & interior4

01Rear Subframe Bushing Deterioration (GE/GH/GR/GV WRX and STI)

Visually inspect the rubber bushing condition for cracking, splitting, or collapse around the subframe mounting points.petrol2007–2014Suspension
CommonSuspension $500–$1,300 to fix

Does not apply

The GE/GH/GR/GV generation WRX and STI uses rubber rear subframe bushings that degrade with age and aggressive use, allowing the subframe to shift position under cornering and braking loads. This produces progressive looseness in rear-end handling, abnormal tyre wear, and knocking noises over sharp bumps. Deterioration is accelerated by track use, sustained hard driving, and New Zealand road surface conditions. Subframe removal is typically required for bushing replacement. At the age range this generation now represents, deteriorated bushings are widely reported across both Australian and NZ WRX communities as a common pre-purchase finding.

Symptoms to notice

  • Knocking or clunking from the rear over sharp bumps or dips
  • Vague or unpredictable rear-end response under cornering load
  • Uneven or accelerated rear tyre wear
  • Rear wheel alignment that cannot be set correctly or does not hold

What to check

Visually inspect the rubber bushing condition for cracking, splitting, or collapse around the subframe mounting points. Check rear tyre wear patterns for abnormality consistent with alignment shift. If a workshop inspection is possible: With the car on a hoist, grip the rear subframe and attempt to move it side to side and front to back — any perceptible movement indicates bushing wear.

Where to look: Rear subframe mounting bushings, four corners of the rear subframe

Ask the seller

  • “Has the rear subframe or suspension been inspected or replaced recently?”
  • “Has the car been used on a track or driven hard on rough or unsealed roads?”
  • “When was the rear wheel alignment last checked?”

02Front Lower Arm Ball Joint Wear

Inspect the boot for splitting.2014 onwardSuspension
CommonSuspension $400–$900 to fix

Does not apply

Front lower arm ball joints wear causing clunking over rough surfaces.

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 rough surfaces
  • Imprecise handling feel especially when cornering

What to check

Inspect the 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?”

03Brake Caliper Guide Pin Seizure

Check for pulling under braking.2014 onwardBrakes
CommonBrakes $200–$600 to fix

Does not apply

Front brake caliper guide pins seize from corrosion causing uneven pad wear.

Symptoms to notice

  • Vehicle pulling to one side under braking
  • One disc hotter than the other after moderate use

What to check

  1. Check for pulling under braking.
  2. Feel for uneven wheel heat.
  3. Inspect guide pins.

Where to look: Front brake calipers

Parts involved: Brake disc and pads.

Ask the seller

  • “Has the brake caliper guide pin seizure been inspected or repaired?”

04Rear Multi-Link Bush Collapse

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

Does not apply

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

Symptoms to notice

  • Knocking from rear suspension over rough surfaces
  • Imprecise rear handling feel

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 multi-link bush collapse been inspected or repaired?”
Fluid leaks2

01EJ20 Turbo Oil Return Line Blockage and Turbo Seal Failure (GC/GF)

Check the underside of the turbo for oil weeping around compressor or turbine seals.petrol1994–2000Fluid Leaks
CommonFluid Leaks $400–$2,800 to fix

Does not apply

The OEM turbocharger oil return (drain) line on the GC/GF EJ20 has a narrow bore prone to sludge restriction, particularly on cars with infrequent oil changes or extended idling. When the return line partially blocks, oil backs up inside the turbo centre housing and pressurises the compressor and turbine shaft seals, forcing oil into the intake or exhaust streams. Left unaddressed, seal degradation accelerates bearing wear and ultimately requires turbo rebuild or replacement. Carbon-contaminated return lines are commonly found even on cars showing no obvious symptoms.

Symptoms to notice

  • Blue or grey smoke from exhaust under boost or on the overrun
  • Oil residue or pooling inside intercooler inlet piping
  • Oil weeping from around the turbo compressor housing
  • Burning oil smell from engine bay at idle or under load

What to check

  1. Check the underside of the turbo for oil weeping around compressor or turbine seals.
  2. Inspect the oil return hose running from the turbo centre section down to the sump for kinking, hardening, or blockage.
  3. If a workshop inspection is possible: Remove the intercooler inlet hose and inspect the inside for oily residue or pooled oil.

Where to look: Turbocharger oil return/drain line from turbo centre section to engine sump; turbo compressor and turbine shaft seals

Parts involved: Turbocharger.

Ask the seller

  • “When was the turbo last inspected or rebuilt?”
  • “What oil change intervals has the car been run on — has it ever gone past 5,000 km?”
  • “Has any blue or grey smoke been noticed under boost or on the overrun?”

025-Speed Gearbox Rear Extension Housing Oil Seal Leak (GC/GF MT)

The rear output shaft seal on the GC/GF 5-speed manual transmission is a documented wear item that weeps or drips gear oil from around 100,000 km.petrol1994–2000Fluid Leaks
CommonFluid Leaks $280–$750 to fix

Does not apply

The rear output shaft seal on the GC/GF 5-speed manual transmission is a documented wear item that weeps or drips gear oil from around 100,000 km. The seal sits at the junction of the gearbox tail housing and rear propshaft flange, exposed to sustained heat cycling and vibration. JDM imports that have spent years in NZ or AU conditions frequently arrive with an active leak from this point. Neglected leaks drop the gearbox oil level low enough to cause synchro and bearing damage, making it a lower-cost item with significant consequences if ignored.

Symptoms to notice

  • Gear oil drips on the ground under the centre of the car, behind the gearbox
  • Oily residue or staining on the underside of the gearbox tail housing
  • Burning oil smell from underside after a run
  • Low gearbox oil level on inspection

What to check

From underneath the car, inspect the rear of the gearbox tail housing and the area around the rear propshaft output flange for gear oil residue, fresh staining, or dried deposits. Check the ground beneath where the car usually parks for oily spots.

Where to look: Rear extension housing of the 5-speed manual gearbox, propshaft output flange seal

Ask the seller

  • “When was the gearbox oil last changed, and what level was it at?”
  • “Has any gear oil leak been identified or repaired on this car?”

Subaru WRX faults in detail

Narrowed to the Subaru WRX · 2002. 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.

EJ20/EJ257 Ringland Piston FailureCritical · Engine

What these repairs cost on other cars

Some of the Subaru WRX’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 faultsSubaru Forester50 documented faultsSubaru Impreza44 documented faultsSubaru Liberty38 documented faultsSubaru Outback34 documented faultsSubaru STI32 documented faults

Subaru WRX buyer questions

Is the Subaru WRX reliable?

Like any used car, it depends on the specific example and its service history. Across the 41 documented faults for the Subaru WRX, the recurring problem areas are engine, transmission, and cooling. A Subaru WRX 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 WRX?

We've catalogued 41 known faults for the Subaru WRX, covering engine, transmission, and cooling. All 41 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 WRX?

Most single repairs on the Subaru WRX fall between $900–$3,200 at NZ independent-workshop rates. Some of the 41 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 WRX?

Yes. A Subaru WRX 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.