Table 1 shows seven common power train related problems of the 1999 Audi A4. The number one most common problem is related to the axle shaft (one problem). The second most common problem is related to the transmission not go into gear (one problem).
Right rear axle bearing is failing. Loud groan heard at speeds exceeding 30 mph. Dealer claims tire noise is the problem and refuses to fix it. Two non-Audi sources support axle bearing failure (auto mechanic and mechanical engineer). Read details...
While driving in cold weather vehicle would be jerking & bucking like a stick. Transmission would hesitate when shifting into another gear after slowing down & then speeding up. Vehicle been to two different dealerships. Nothing found after diagnostic test and test drive. Read details...
Immediately prior to switching from 3rd to 4th gear, the vehicle loses r. P. M. 's and power then catches and changes gears. It is only in this gear shift --3rd to 4th. I have contacted the manufacturer and they say it is within design parameters. Read details...