Ignition coils needed replacing at 30K, 45K, & 50K.
Horns needed replacing at 40K and 120K.
Radio needed replacing at 30K and again at 50K.
Headlamp washer motor needed replacing at 70K and again at 98K. When it fails, you have no windshield wipers.
Wipers seized at 79K, 98K, & 104K ("repaired") and 109K (replaced finally).
Antenna amplifier needed replacing at 120K (no FM signals otherwise).
Steering rack ($2000 cost) needed replacing at 120K.
Drives and handles like a dream, when it works.
Extremely unreliable. Stranded me 5 times in the first two years due to ignition coils and windshield wiper failures (can't drive in pouring rain without them).
I usually keep my cars for a long time (1992 10 years 240K, 1989 Vanagon Westfalia 200K 17 years-still have it), but the Audi is gone after less than four. This is my last VW/Audi until they get their act together.
Note: This review is classified incorrectly. My A4 was a 2002 (new model), not a 2001.