2012 Subaru WRX STI-TP UK SYM-CAL AWD 2.5L Petrol · SD12 WRT

The vehicle most recently passed its MOT on 26 May 2026, although the test was accompanied by an advisory noting that the engine required significant warming to pass the emissions test. Reviewing the history since 2022, the maintenance trend appears to be fluctuating rather than stable. There is a recurring pattern of exhaust emissions failures and advisories, alongside a persistent notification of underbody corrosion that has appeared in consecutive years. This suggests that while the vehicle remains roadworthy, there are underlying issues with the exhaust system and structural oxidation that are not being fully rectified. With a recorded mileage of 91,224 miles over a fourteen year period, the vehicle has averaged approximately 6,516 miles per year. This is a moderate usage rate that avoids the excessive mechanical wear associated with high-mileage examples, yet it is low enough to suggest periods of inactivity. Such usage patterns often contribute to the degradation of consumables and the onset of surface oxidation, which is consistent with the recorded advisories regarding pitted brake discs and general underbody corrosion. Prospective buyers should pay close attention to the recurring emissions issues. The history of lambda and carbon monoxide failures, combined with the recent requirement to heat the engine for a pass, indicates potential faults with the oxygen sensors, catalytic converter, or fuel trim calibration. During a test drive, listen for an inconsistent idle and feel for any hesitation under acceleration. Furthermore, the mentioned pitting and scoring of the front brake discs should be investigated; feel for any shudder or pulsation through the brake pedal during deceleration, which would indicate warped discs or uneven pad deposits. The most critical area for physical inspection is the chassis and underbody. General underbody corrosion on this model can progress from surface rust to structural compromise, particularly around the suspension mounting points, sills, and rear subframe. A thorough inspection with a torch or on a lift is essential to ensure the integrity of the structural members. Additionally, given the vehicle's age, verify the service history for calendar-based fluid changes, as oil and coolant degrade over time regardless of mileage, and inspect the tyre sidewalls for perishing or cracking that may have occurred during periods of standing.