In general, the driveshaft is an important component in your car that can increase its drivability and performance. Moreover, it is a core component of rear-wheel drive cars that are connecting the rear of the transmission to the driveshaft. If the driveshaft has any problem, then it will show numerous warning signs to alert the driver about the problem. Through the following slide, you can determine the failed driveshaft in Audi A4.