Broken right front CV joint.
Front upper strut mounts.
Rear shocks.
Tear on the leather seats.
Sunroof motor has gone bad.
Fuel gauge is broken.
Very strong, but not fast car. Once I had 8 people in it and it did not even feel any different even though I started from the stoplight from third gear just to see how it would go!
It has been extremely reliable, when my CV joint went, the whole drive shaft was inoperable. Then it picked up and propelled the rear wheels as if it was RWD all the time.
The seats are really uncomfortable, but you get used to it after a while.
Also I cannot stand the fact that the sound system is hard to modify.
Sound system hard to modify? Yes, but it's a fun challenge, also when modified, it sounds great in these cars. I have to say that no other car that I could have owned for three years and beaten unmercifully would still run as perfect as my quattro does, and it does have nice power and no pick up, but with a couple of mods, it actually has some decent pick up.
If you are disheartened about the difficulty to modify the stock sound system, give Crutchfield a call. There is a wiring harness that is made for this car so you do not need to cut into the stock wiring. Then a head unit can be installed. Using the sleeve and trim collar method (supplied with all new head units), putting in a new deck isn't that hard. But speaker installs are hard. I do agree though that the cabin is a designed well for acoustics, especially with the open head rests. But having a gas tank between the cabin and the trunk does not allow for much bass to pass through.
I have owned my 4000 cs for 2 years and I'll say for a mid 80's car, it's gotta be the best around. I added a K&N filter to it and it made a world of difference from the line, I found a few after market parts as well that I plan on adding to it that should boost the horsepower a little more. I also think the audi 5 Cylinder engine is one of the best around, my car is pushing 200,000 and still runs like I just rolled it off the showroom floor. I hope you all enjoy your audi's as much as I do!
I have owned 3 of these cars and loved everyone. I have one now with the heated cloth seats & trip computer. I have one of the best sounding systems in it. I used Eclipse for a head unit, a pq20, clarion all the way around, punch 200 and soundstream subs. The car has 320kmi on it now and is my daily driver. I wouldn't trade it for most new cars. The car runs and looks like new. I keep it parked next to its cousin QSW in a heated garage every night.
I bought one a few months ago for my first car. AWESOME!
It looks aggressive, but very slow.
I had to replace the front CV joints, the headlights; other than that it was mint.
It is a BLAST in the snow. Once I was driving in a storm with some buddies and I slid into the bank. All four wheels were buried in 1 1/2 feet in snow. My friends were already getting out of their seat belts to go push. By the time they started to open the doors I already locked the diff and rolled out first try. It's a tank ;)
It's fun drifting in snow; it's so easy to whip it around on ice, especially with snow tires or all terrain, and it's incredibly forgiving if you lose it.
I LOVE THIS CAR peace.