Lineartronic CVT Valve Body Failure
SeriousGearbox & TransmissionThe Mk4 Impreza’s CVT can suffer solenoid or valve body faults that show up as shunting, hesitation and warning-light clusters.
Est. Repair Cost: £800–£1,800
Reliability GuideCommon Problems with the
Common Problems with the
2012 Subaru Impreza Mk4 (GJ/GP)
Early Mk4 cars are the ones most commonly tied to oil-consumption complaints on the FB20 petrol engine.
3
Known Issues
1
Serious
2
Moderate
0
Minor
All Known Issues
Excessive Oil Consumption
ModerateEngineEarly FB20 engines can use oil quickly enough to require frequent top-ups between services, and neglected low oil levels can lead to bigger engine wear.
Est. Repair Cost: Monitoring / £2,000+
Air-Conditioning Condenser Damage
ModerateCooling SystemThe low-mounted condenser is vulnerable to stone damage and corrosion, leaving some cars with weak or completely failed air conditioning.
Est. Repair Cost: £300–£650
Buying Tips for 2012 Subaru Impreza Mk4 (GJ/GP)
- ✓A cautious buyer should treat a dry dipstick on a 2012 car as a major warning sign, not a minor oversight.