i recently just bought my 3.0a6,its been bout 2 weeks so far.before i bought the car i tested every thing with the car lights,windows,etc.everythin good.now i realize that when i tried to roll down the back drivers window it jumps up an down then roll up so slow or it get stuck. i have a warranty still active so im bring it to the dealer tomorow.i'm heated.[:@].the car other than that is crazy,wouldn't change nothin.but what would cause that?

 

The window regulator clips are broken more than likely, they are made of plastic and the cable breaks its way through them. Its a common problem on the A4 and A6 so don't be surprised if it happens again to another window down the road. The good news is the front window clips can be replaced by themselves which only cost $5 at www.ecstuning.com
The rear windows you have to bite the bullet unforuntately.

 

thanx, i should be able to get it fixed cuz i still have an active warranty

 

Just on a side note. I had that problem with my front passanger side window and my mechanic sprayed silicone lubricant in the tracks and around the window. Didnt work right away but it must have losened something up once it worked its way in. The window works fine now.