Best car I ever owned, but does require maintenance
Throttle body fault at 50,000 (intermittent fault).
Water pump went out at 53,000 (warranty repair).
Upper control arm failed around 100,000.
ABS control unit failed at 110,000.
Coolant temp sensor failed at 110,000.
Moonroof opens sporadically (not yet fixed).
LED for trip computer is unreadable (a common problem with Audis).
I love this car! Although I have had to replace parts over the 10 years I have had the car, I expect to have to spend some money to maintain my car. This is the third Audi I have owned, and the next car I buy will also be an Audi.
Some of the comments on here about common failures are valid.
The moonroof problem is annoying, but can be solved with a $90 part.
I replaced the timing belt at 89,000, and will probably replace it again at 170,000. If you replace the timing belt, make sure you replace the coolant thermostat at the same time (you have to remove the timing belt to get to this part).
To resolve the throttle body fault, unplug the battery and leave unplugged for several hours then reconnect. The car will run rough for a few hours, but should return to normal without the check engine light coming on.
I plan to drive my car for another 80-90,000 miles.
Would you buy another car from this manufacturer? Yes
Review Date: 24th March, 2011