One problem related to differential unit has been reported for the 2002 Audi A4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Audi A4 based on all problems reported for the 2002 A4.
The contact owns a 2002 Audi A4. The contact stated while driving approximately 55 mph she heard a loud popping noise and smoke came from underneath the hood. The contact was unable to drive the vehicle and it was towed to a dealer. They dealer advised her that the differential in the transmission overheated and needed to be replaced. The manufacturer was notified and offered to buy her vehicle for $500. The vehicle was not repaired. The failure and current mileage was approximately 105,000.