Subaru Impreza WRX STI 330S.
What to Check Before Buying.

The Subaru Impreza WRX STI 330S suits committed performance enthusiasts seeking a rare, track-focused special edition with genuine collectability. Limited to just 330 UK examples in 2005, this variant delivered 316bhp from its 2.5-litre turbocharged boxer engine with strengthened internals, making it one of the most potent factory Imprezas. The uprated Brembo brakes and revised suspension geometry offer exceptional stopping power and handling, though the firmer ride can feel punishing on British B-roads during daily use. When buying used, verify the car's authenticity by checking build number documentation and original specification sheets, as replicas exist. Inspect for signs of track use including worn brake components, cracked undertray protection, and oil consumption issues common to the EJ257 engine. Check service history meticulously for regular oil changes using quality fluids, as these engines are notoriously sensitive to neglect. Listen for turbo bearing noise and examine for head gasket weepage. Many 330S models have been modified, so establish whether any changes are sympathetic and reversible to protect future value.

The average used car has 3+ known model faults the seller won't mention.