I've got a remapped A3 I've had it for fours years now and only had two problems with it totalling £500 which isn't bad for 50,000 miles the car is now on 140,000 miles and she is still going strong. Best build quality interior wise is Audi, vw then soda and seat if I just drive normally round town I get 40mpg out of it but have had 60mpg on long runs its as quick as civic type-R's and handling is good. I wouldn't go without having a vw group diesel now as my daily.