Audi A4 Investigations

The A4 has been investigated 7 times. The 1998 and 1999 model years have been involved in the most campaigns.

An investigation is opened by NHTSA when enough complaints or a petition is filed concerning a safety-related issue with a vehicle.

Investigations by Model Year

Clicking on a model year will bring you to CarComplaints.com which has a full list of documents from the NHTSA.