Hi,
Where to start had our P1 for 3 years & recently changed for the WR1.
The P1 is the best car we have owned & being totally honest I prefer it to the WR1 []
Ours had 40k on the clock when we bought it & sold with 69k, no engine problems at all, they do have a tendancy to pop engines but think a lot depends on how they are looked after.
Few pointers below, just my opinion []
Always warm up and cool down properly
Fit knock link and quality guages, never let oil temp go above 117 degrees
Avoid cars with induction kits and or decats, unless been remapped
Most P1 engines blow due to faulty MAF sensors, signs are eratic idle and lumpy running at low revs usually doesnt bring on the check engine light, we changed the MAF annually £75 & easy DIY job
Other causes can be, been on motorway at prolonged silly speed, decats or induction kits fitted without remap (makes engine detonate at high revs)
See you have found the P1 WOC, great site for P1 info and a good bunch peeps []
Car at Lichfiekds now sold, know car and owner, it was a real minter
Advice from me would be to buy a standard P1 with full Subaru history and a warranty.
They are a tremendous drivers car but do need to be looked after.
If I can be of further help let me know []
Cheers Paul