Audi A4 owners have reported 475 electrical system related problems since 1996. Table 1 shows the 26 most common electrical system problems. The number one most common problem is related to the vehicle's electrical system (237 problems). The second most common problem is related to the vehicle's ignition coils failure (63 problems). For details of each of the problem category, use the links in the table.
Many times while driving the Audi mmi system which controls all radio/navigation/controls screen will completely shut off and reboot, leaving the screen blank and functionality gone. When researching online many others have reported the same issue, with Audi unable to provide a definitive cause or Read details...
Ignition coils went out. Car stopped on busy street but was able to move to side street. Come to find out after I purchased the car the coils were recalled. . Spoke with someone at Audi and they verified there was a recall on the coils. Read details...
After a stop light changed to green I started a left turn. Immediately the car started to "shake". It seemed like I was driving over some lane divider bumps. I noticed the engine light was on so I found a safe place to pull over. The car had to be towed. Read details...
I purchased the car in 2013 the key was very difficult to turn in the ignition, after 3 months, it locked up one time in the garage so I just left it as it was and tried the next day. After yanking on the steering wheel and almost breaking the key in the ignition it finally started. Read details...
See attached document for complaint Read details...