There are 2 owner-reported lighting complaints for the 2004 Audi A6in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
PASSENGER SIDE MECHANICAL VERTICAL ADJUSTER DOES NOT FUNCTION IS LAMP POINT TO ABOUT 10 FEET TO THE FRONT OF THE VEHICLE. DIVER SIDE ADJUSTER APPEAR TO FUNCTION OK. ONLINE BLOGS CONFER MULTIPLE PROBLEMS WITH AUDI HEADLIGHT ADJUSTERS AS COMMON, RECURRENT, AND COSTLY TO FIX. DRIVING WITH POORLY AIMED LIGHTS IS OBVIOUSLY SAFETY ISSUE. *TR
A NUMBER OF CARS THAT HAVE RED TURN SIGNALS (VERSUS ORANGE) DO NOT BLINK THE ENTIRE LIGHT WHEN TURNING. THUS, WHEN THE BRAKES ARE APPLIED AND THE TURN SIGNAL IS ON, IT IS MORE DIFFICULT TO SEE. IF THE COLOR OF THE BRAKE LIGHT AND THE TURN SIGNAL IS THE SAME, THE ENTIRE LIGHT SHOULD BLINK, NOT JUST A SMALL PORTION. *JB
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