Originally Posted by VTwin60
hopefully the new ST proves to be a reliable powerplant, something that Subaru does not have. Yes they're fast and yes you can modify them for great power, but they have more than just a few engine problems. They have had issues with both the standard WRX and STI with piston ring failures at an alarmingly high level bone stock from the factory related to insufficient cooling (oil flow) and poor materials. The misfiring and detonation issue is another concern leading to this problem and its an issue that Subaru has had since the last generation of WRX's. Its enough of a problem that several tuner mags make quick mention of it, while saying its the greatest thing since sliced bread in the same breath. Take look at several of the WRX forums around and you may come to a similar conclusion, also keep in mind that relatively very few WRX's are sold nation wide.
Actually the WRX(both the regular and the STi version)have been very popular ever since the first ones hit our shore back in 2001. No car is perfect(I can recall a few Fords that have major issues just as bad-or worse) and the ST has yet to prove it's durability and long term reliability.