-Passenger side window rails were bad, cost $300 to fix them, but the job was done quick and the window works great now.
-Clutch began to slip after modifying the motor some and doing a bit of drag racing, probably wouldn't have happened if left stock. Car now has an RS4/Stage 2 clutch.
-The A6 is pretty quick stock, but my advice to anyone with a 2.7T motor is DO THE CHIP! The difference is night and day, car is making tons more power now. (I have the GIAC X Chip). It is now faster than my brother's modified 1998 BMW M3.
-The interior is great, very comfortable and great ergonomics, along with great build quality and good materials.
-The car is very quiet on the freeway and averages 21mpg overall.
-The car looks very nice, I get constant comments about how nice it looks (mine is Light Silver, with BBS rims and smoked taillights).
-The Quattro AWD and ESP really works, if you get a wheel loose or the car is pitching it kicks right in and rights the ship.
-The car is also a bargain used, I paid $21,000 for mine, as compared to over $30,000 for a lower line, slower BMW or Mercedes of the same vintage.
Have you had any problems with it? I'm looking in to one. Its kinda hard to find a 6 spd, but that's what I'm looking for.