What goes wrong, what it costs, and what to check before you buy a used Subaru WRX.
The Subaru WRX occupies a niche position on the UK market.
We track 5 known issues across the Subaru WRX range, including 2 rated as safety-critical. Knowing which variants and configurations to approach with caution can save you from expensive surprises after purchase.
Found a Subaru WRX? Enter the reg to see which of our 5 known issues apply to that exact car, plus full MOT history and mileage checks.
GR (2008–2014) — Engine options included the 2.5L Turbo.
VA (2014–2019) — Engine options included the 2.5L Turbo. Our database flags 3 known issues on this generation, 1 of which are rated as safety-critical. The most significant concern is Clutch pedal and bracket failure (£300–£500 to address).
The ringland is the area of piston between the top compression ring and the oil control ring on EJ25 turbocharged engines. Under detonation or pre-ignition conditions, this thin section of aluminium can crack and break away, destroying compression in that cylinder. This is the most documented catastrophic failure mode on GR/GV WRX models, typically triggered by poor fuel quality, aggressive tuning, or carbon knock from incorrect spark plug heat range. The FA20 engine in VA models uses a different piston design that is not subject to this specific failure mode.
Complete engine failure requiring full rebuild or replacement. Broken ringland pieces can damage other cylinders, score cylinder walls, and contaminate the oil system. Typical engine rebuild costs £4,000-£8,000 depending on extent of damage. The car should not be driven with suspected ringland failure as further damage is inevitable.
Listen for any unusual knocking, tapping or rattling from the engine at idle and under load. Check the oil for metal particles or discolouration. On higher-mileage examples, a professional compression test can reveal internal wear before it becomes critical.
US NHTSA complaints document multiple cases where the clutch and brake pedal brackets affixed to the firewall break loose, causing the brake pedal to shift towards the clutch position. This creates a dangerous situation where the brake pedal cannot be fully depressed or may be confused with the clutch pedal. The bracket failure appears to be caused by metal fatigue in the firewall mounting points, exacerbated by the additional stress from performance driving and frequent clutch operation.
Critical safety risk where brake pedal dysfunction could prevent emergency stopping. If the bracket fails completely, the brake pedal may become inoperable or its position may be confused with the clutch, leading to potential accidents. Repair involves firewall reinforcement and bracket replacement, typically costing £300-£600. The vehicle should not be driven if pedal bracket failure is suspected.
Check each gear engages smoothly without crunching. Feel the clutch bite point — very high or very low can indicate wear. Listen for bearing noise when the clutch is depressed.
The IHI VF48 and VF52 turbochargers fitted to GR/GV WRX models develop bearing wear and shaft play over time, particularly when subjected to aggressive driving or poor oil change intervals. The turbocharger's centre cartridge contains journal bearings that rely entirely on engine oil for lubrication and cooling. When these bearings wear, the turbine shaft develops lateral movement that damages the compressor and turbine wheels, leading to loss of boost pressure and eventual complete failure. This is less of an issue on VA models due to improved oil feed design.
Progressive loss of power and boost pressure leading to poor performance and potential engine damage from oil starvation if seals fail completely. Failed turbo can send metal debris into the intercooler and intake system. Replacement turbocharger costs £800-£1,500 plus labour. The car remains driveable with reduced performance until complete failure occurs.
During a test drive, check for hesitation, lack of power or unusual whining from the turbo area. Watch for blue or white smoke from the exhaust under hard acceleration. Check the oil condition and service history — turbos rely on clean oil.
5L petrol engines between 20,000-40,000 miles. The high failure rate is typically caused by secondary air injection valve faults, catalytic converter degradation, or lambda sensor failures. The secondary air system pumps fresh air into the exhaust during cold starts to reduce emissions, but the valves frequently stick or fail, triggering P2441 fault codes and MOT failures.
MOT failure requiring repair before the vehicle can be used legally on UK roads. Secondary air valve replacement typically costs £200-£400. Catalytic converter replacement ranges from £400-£800 depending on the specific unit. Lambda sensor replacement costs £150-£300. Delayed repair can lead to catalyst damage if the underlying fault causes overfuelling.
Check for any engine warning lights on the dashboard. Ask about the car's MOT emissions history — repeated failures suggest underlying issues. A pre-purchase diagnostic scan is especially worthwhile to check for stored emissions fault codes.
MOT data shows spring failures at 2.3 times the fleet average across multiple mileage bands, with a worsening trend. The rear coil springs are particularly prone to fracturing, typically at the lower coil where road salt and debris accumulate. This affects both GR/GV and VA generations and appears to be related to the spring steel specification rather than overloading. Broken springs cause dangerous handling characteristics and immediate MOT failure.
Dangerous handling characteristics with unpredictable vehicle behaviour during cornering or emergency manoeuvres. Immediate MOT failure and potential damage to shock absorbers or other suspension components. Spring replacement typically costs £150-£300 per side including labour. The vehicle should not be driven with a suspected broken spring.
Listen for knocking, clunking or rattling over bumps during the test drive. Inspect the underside for corroded or cracked suspension components. Check the MOT history for suspension-related advisories, which often predict future failures.
For the full breakdown of all 5 tracked issues with repair costs, see the Subaru WRX common problems page.
Based on 10k real DVSA MOT tests, the Subaru WRX fails more often than average on several items. The biggest outlier is exhaust system damage at 62x the fleet average, followed by emissions failure (26x).
When viewing a specific car, check its MOT history for recurring advisories in these categories. See the full Subaru WRX MOT failure breakdown for data at every mileage point.
Routine servicing (oil and filter change every 10k miles) typically costs £80–£120 at an independent garage.
See the full Subaru WRX service schedule for every interval and cost breakdown.
The Subaru WRX has some well-documented weak points, including 2 safety-critical issues that demand careful checking. The right example, properly maintained, can still be a sound purchase — but cutting corners on the pre-purchase inspection is not advisable.
Before committing, check the car's full MOT history, verify the service record is complete, and if possible arrange a specialist inspection. Enter any registration into our free report to see the complete picture.
Get Car Wise maintains a database of known mechanical issues for every popular car on UK roads, tracking the faults that owners, specialists and DVSA data reveal.
When you run a report on a specific Subaru WRX, we cross-reference the exact variant, engine and age against our database of 5 known issues. Combined with full MOT history analysis, mileage verification and DVLA data, you get a complete picture before viewing.
Enter the registration for MOT history, mileage verification, known faults for that exact variant, and a Get Car Wise Score.
This guide was compiled from independent expert reviews, DVSA MOT data, specialist workshops and our own database of 5 known Subaru WRX issues. We are not affiliated with any source listed.