One of my good friends at work just traded in his 02 A4 1.8T after only having for 7 months and having it in the shop all the time. The car had 80K. The things I can remember are fuel pump, transmission front pump, belt tensioner, coolant leak, vacuum leaks, check engine light on 4 times, HVAC controls broken, etc. I am sure there's more, I just can't remember. I was seriously considering buying one before he bought his, but after seeing just how much the parts alone cost, I'll think twice. I remember that the cupholder in the dash broke and the new one was close to $100.