not gti's but a guy who lives close to me has had 2 tdi's that burned them selfs out and had them both replaced by vw. the first one was new at the time 05 reg it got sent back to germany for testing turns out that it started behind the dash. it got replaced, long story short the next one had extreme turbo failure and the one after that screwed up too

. so the fourth one he got was doing ok till it decided to set its self on fire the same as the first one but this time it was right out side the house and it nearly took it with it. anyway he was told that if the inspection didnt turn up anything he would have to go through his insurance,well turns out that the car was at fault so vw give him a new one and fixed the damage to the house
so he had 5 tdis on the same deal as the first one, a whole load of problems but it never but him off he now has a mk6 tdi
ps our jetta got recalled for a dodgey earth wire behind the dash that could have set it on fire.