There are 2 owner-reported air bags & restraints complaints for the 2004 Audi S4in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
REAR SEAT BELT BUCKLE HAS INTERIOR DEFECTS AFTER 33,000 MILES. CAR IS OUTSIDE OF WARRANTY DUE TO YEAR OF VEHICLE. THE FEMALE RECEPTOR OF THE BUCKLE HAS SOME OF THE INNER MECHANISM HANGING OUTSIDE OF THE LIP OF THE BUCKLE, MUCH DIFFERENT THAN THE OTHER BUCKLE NEXT TO IT WHICH IS IN NORMAL WORKING ORDER. *TR
I HAVE AN AUDI S4 CONVERTIBLE THAT HAS BEEN TO THE DEALERSHIP MULTIPLE TIMES FOR THE SAME SAFETY ISSUE. THE AIRBAG SYSTEM HAS BEEN DEFECTIVE AND THE REPAIRS DO NOT SEEM TO BE TAKING HOLD WHEN THEY DO THEM. SO FAR THERE FORTUNATELY HAS NOT BEEN A NEED TO USE THE AIRBAG SYSTEM, HOWEVER ITS UNAVAILABILITY IS A MAJOR CAUSE FOR CONCERN. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026