Several transmission mounts broke, alternator went bad, tires wear out within 15K of being new, driver seat lumbar broke, interior paint chips horribly, ignition coil went bad, fuel injector stuck open, spraying fuel in my exhaust, leaks washer fluid from headlight washers, blinker switch went bad, alternator pulley stripped out, stereo went bad, blows blinker bulbs constantly, just replaced the clutch, and that's it... so far.
This car is a blast to drive and is very beautiful, however, when all it does is sit in the shop, it isn't worth very much.
When I bought the car at 52K, one of the transmission mounts was broken. I have since replaced two others that also broke.
This car also hydroplanes like no other, since it's so light and it sits on very wide 235 tires, it practically floats, so beware in the rain.
Speaking of rain, there is also a drain leak that leaks rain water into the headliner at the back right corner of the car. Our family mechanic, who does great work, and works on all my parents cars, now refuses to work on my Audi, because it's been there so many times, and is such a pain to work on.