Faults:

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).

General Comments:

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.

Faults:

Misfiring.

ECU computer.

Sun roof opens automatically.

Gas cable broken, caused sudden acceleration.

Cheap interior.

General Comments:

Don't ever buy it.

Faults:

Anything and everything that could go wrong with the engine went wrong; Head gasket, alternator, oil leaks, water pump etc... put more money into fixing it every other week than the whole thing cost.

General Comments:

Interior was nice and comfortable, and had a really nice ride... when it ran.

Handles good in the snow.

Ended up selling this car less than a year later, and bought a 1996 BMW 325i, which currently has 260,000 miles on it, and have yet to have any problems.

Faults:

Not a lot. I love this car; if you do the maintenance on the car, it will last a long time. Most people are lazy!! They will not spend a penny on maintenance. They spend money on big tires and rims; crap like that. Look at all the rusty cars here, people just don't care.

I've done 237000 miles, and I still get 27 mpg.

Faults:

Replaced head lights at 105,000 miles due to one leaking.

Replaced brake rotors and brakes at 106,000 miles.

Had eight hard to find engine oil leaks fixed at 106,000 miles.

Had timing belt replaced at 107,000 miles.

Transmission blew at 110,000 miles.

Front bumper keeps popping off the brackets.

Center ashtray in front console comes out.

Wiring problems under the hood, which causes the LED dash screen to turn on and off sometimes.

No cruise control.

Sunroof switch sometimes has a mind of its own as well.

Bad MAF sensor.

Leaky rear strut needs replacing.

Needs new tie rods and one upper control arm.

Carrier Bearing on driveshaft needs to be replaced.

General Comments:

This car has been an absolute headache. I was in Iraq when I bought it, and the seller obviously wasn't honest with the person who picked up the car for me. He did no maintenance to it at all.

I plan to redo all of the suspension to racing spec, and get the car back to where it deserves to be.

Despite all these problems, it still handles surprisingly well and is very comfortable to drive. Audi are great vehicles to own as long as you can afford it and a blast to drive. Their AWD system makes all the difference or I would have gotten something else. This car is very tough, despite the transmission failure. I have had to drive on roads where only big trucks go.

My transmission was performance built by a racing company, and is modified to be a lot more durable. Stock Audi automatics have durability issues from what I hear as well.