The engines are pretty bulletproof mate, im on my second V6 now, its done 105K, and it hinestly purrs like a kitten, starts first time, and goes very well for what it is. its just a case of getting to know there little problem areas, its usually one of the things mentioned above. the only major things that go wrong is the dread ticking sound that is follwed by headgasket failure, and they do like to spin the shells if the oil isnt kept topped upto maximum, or, tbh, just above maximum. a lot of the time when they spin the shells, if follows cornering at high revs, with the oil level low, they dont have a baffled sump, and suffer oil starvation, so as i said, keep a regular eye on your oil level, and keep it topped up.