Subaru WRX
Turbo boxer with 2.5L — the WRX engine of the GR/GV era. Same ringland vulnerability as the EJ257 (cast iron pistons with thin ringlands), but slightly less boost from the factory. Oil pickup tube crack, rod bearing failure, and timing belt are the three big concerns. Class action for 2012-2017 models extended warranty to 8 years/100k miles.
265 hp turbo boxer — same weaknesses, more power
More displacement than the EJ205, but also more ringland risk. The GR/GV WRX is the workhorse of the scene. Hatchback version cult-worshipped, sedan more common. From Stage 1 it gets properly fun — stock is competent but not exciting.
Engine Weaknesses 5
Cast iron pistons with thin ringlands crack under detonation (knock). Causes: poor fuel quality, bad tuning, high exhaust gas temperatures. The EJ cliché alongside the head gasket.
Symptoms: Misfires at idle after high-load driving, increasing oil consumption, blue smoke
Class action for 2012-2017 WRX/STI: extended warranty to 8 years/100k miles. Oil starvation from boxer sloshing or neglected oil level as primary cause.
Symptoms: Knocking noise, oil pressure warning, metal particles in oil
Identical problem to EJ205: brazed joint cracks from vibration. No recall despite known issue since 1996.
Symptoms: Sudden oil pressure drop, engine noise, oil pressure warning light
Timing belt replacement every 105k miles mandatory. Same interference risk as all EJ engines.
Despite MLS gasket from the factory, the head gasket can fail under overheating or neglected maintenance. Less systematic than the EJ253 NA, but not immune.
Symptoms: Overheating under load, coolant loss, white smoke
Vehicle Weaknesses 6
Known recall issue (2011): Front subframe and lower control arm brackets corrode severely in salt-belt states — metal can be punched through. Safety-critical failure mode.
Subaru recall WQK-47: Brake lines corrode due to gap in fuel tank protector — salt water splashes directly onto steel lines. Over 660,000 vehicles affected.
Rear wheel houses rust from the inside out — the weld seam between inner and outer panel traps moisture. In salt-belt regions visible from about 10 years onward.
Strut mount bearing wears out from about 80,000 km — often insufficiently greased from factory. Clunking when turning at low speed is the classic symptom. TSB 05-61-16 addresses this.
Rear wheel bearings are pressed components on the GD generation. More prone to wear with high mileage or spirited driving than on normal vehicles.
Typical Subaru issue on the GD generation: plastic clips on door panels and dashboard loosen with age. Cold temperatures make the noises worse.