NHTSA Owner Complaint Log
This page lists owner-reported complaints filed with NHTSA for the 2009 Audi A8. Complaints are unverified consumer reports submitted to NHTSA and do not by themselves prove a defect or defect rate.
Data synced from NHTSA on May 4, 2026
The contact owns a 2009 Audi A8. The contact stated that while driving at an undisclosed speed, the sunroof glass detached from the vehicle. The vehicle was taken to the dealer, where it was diagnosed that the sunroof glass frame had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was opened. The approximate failure mileage was 133,878.
1: My passenger door sensitive door closing sensor is not working 2: my sunroof is off track and makes noises 3: battery cord is corroded. There is no where in the world to get 1 right now apparently. I bought a brand new battery and car still doesn’t pull energy from the battery so I’m scared the car won’t start very soon
MULTIPLE COMPONENT FAILURES RELATIVE TO TAIL LIGHT ASSEMBLIES. BOTH TRUNK MOUNTED TAIL LIGHT ASSEMBLIES WERE REPLACE IN 12/11 UNDER MANUFACTURERS WARRANTY. SEALED TAIL LIGHT ASSEMBLIES WERE NOT WATER TIGHT WHICH CAUSED FAILURE OF CIRCUIT BOARDS AND LED LIGHTS. ONE OF THE TWO REPLACEMENT UNITS HAS ALSO FAILED AGAIN (18 MO. IN SERVICE AND 6000 MILES) LIGHTS HAVE FAILED IN THIS UNIT AS WELL, CAUSING POTENTIAL HAZARD DUE TO LACK OF ILLUMINATION EXPERIENCED IDENTICAL FAILURE ON MY 2007 AUDI S8 WHICH IS THE SAME CHASSIS PLATFORM AS THE VEHICLE ABOVE. A TOTAL OF FOUR OF THESE TAIL LIGHTS HAVE FAILED ON THESE TWO VEHICLES. THERE WERE NO COLLISIONS OR EVENTS THAT WOULD HAVE CAUSED DAMAGE OR AFFECTED THE INTEGRITY OF THE LIGHTING UNIT . APPEARS TO BE A DESIGN OR MANUFACTURING DEFECT. IN REVIEWING SOME OF THE AUDI CHAT BOARDS, THIS IS A COMMON FAILURE ON THIS D3 PLATFORM. *TR
CAR HANDLING SYSTEM WENT OUT OF DIRECTIONAL CONTROL AND STEERING CONTROL CAUSING VEHICLE TO BE SENT INTO ONCOMING TRAFFIC AND THEN OFF THE ROAD. *TR
TL*THE CONTACT OWNS A 2009 AUDI A8. WHEN HE TURNED THE VEHICLE ON THE ENGINE BEGAN VIBRATING AND WHENEVER THE CONTACT BEGAN TO SLOW DOWN THE VEHICLE THE TRANSMISSION SHIFTED TO A LOWER GEAR AND THEN SURGED FORWARD. THE VEHICLE WAS TAKEN TO THE DEALER ON 4 OCCASIONS AND EACH TIME THEY WERE UNABLE TO DIAGNOSE THE FAILURE. THE FAILURE HAS OCCURRED SINCE THE VEHICLE WAS PURCHASED. THE CURRENT AND FAILURE MILEAGES WERE 9033.