Problems · NHTSA complaints
2005 Audi A8 problems
Owners filed 6 complaints about the 2005 Audi A8 with NHTSA between Mar 2006 and Jun 2014. The most-cited component is vehicle speed control (3).
Complaints
6
Filed with NHTSA
Crashes
0
Reported by owners
Fires
1
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Vehicle speed control3
- Service brakes, hydraulic1
- Equipment adaptive/mobility1
- Equipment1
- Engine and engine cooling1
- Electrical system1
- Structure1
- Latches/locks/linkages1
- Tires1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Oct 30, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
2
2
0
0
1
0
0
0
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2006 | 2 |
| 2007 | 2 |
| 2008 | 0 |
| 2009 | 0 |
| 2010 | 1 |
| 2011 | 0 |
| 2012 | 0 |
| 2013 | 0 |
| 2014 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Vehicle speed control
3 reports
“ADAPTIVE MODULE J428 FAILED AND BRAKES SEIZED WHILE VEHICLE WAS IN MOTION.. AUDI CUSTOMER SERVICE SAID THAT SINCE THEY COULD NOT FIND A RECALL AND THE VEHICLE WAS NINE YEARS OLD THEY THOUGHT IT WAS NOT THEIR PROBLEM. I THINK THE PROBLEM COULD HAVE E RESULTED IN A SERIOUS ACCIDENT AT HIGH SPEEDS AND COULD HAVE KILLED ME. I PAID FOR THE REPAIR BUT TOLD THEM THEY SHOULD CHECK INTO THE PROBLEM BECAUSE OF THE SAFETY ISSUE BUT DID NOT RECEIVE A POSITIVE RESPONSE. I FEEL THE PROBLEM SHOULD BE RESEARCHED AND I WOULD LIKE FEED BACK ON ANY INFORMATION THAT WOULD RESULT FROM THE RESEARCH. *TR”
Service brakes, hydraulic
1 report
Equipment adaptive/mobility
1 report
Equipment
1 report
“MY 2005 AUDI A8L CONTAINS A DEFECT WHICH ALLOWS THE DRIVER'S FLOOR MAT TO POP OFF IT'S RESTRAINING/LOCATING PEGS ENABLING THE MAT TO MOVE FORWARD AND PUSH AND HOLD THE ACCELERATOR PEDAL DOWN, RESULTING RUNAWAY ACCELERATION, THIS SEEMS TO BE A PROBLEM SIMILAR TO WHAT TOYOTA OWNERS HAVE EXPERIENCED AND FOR WHICH TOYOTA HAS INSTITUTED A LARGE RECALL. THIS SITUATION HAS OCCURRED AT LEAST SEVEN TIMES TO THREE SEPARATE DRIVERS OVER THE PAST TWO YEARS. AT THE FIRST OCCURRENCE TO EACH ME AND MY WIFE, WE WERE ABLE TO CONTROL THE ACCELERATION WITH THE BRAKE TO BUY SUFFICIENT TIME TO GATHER OUR WITS AND SHUT OFF THE ENGINE, THOUGH IT WAS SCARY. NOW WE KNOW TO APPLY THE BRAKE AND PULL THE MAT BACK, REPLACING IT ON ITS PEGS ONCE WE STOP. AFTER THE FIRST OCCASION, I TOOK THE VEHICLE TO MY LOCAL AUDI DEALER IN DANBURY, CONN. THEY KEPT IT FOR THREE DAYS, HAD IT INSPECTED BY "CORPORATE" PEOPLE, AND IN WRITING CONCLUDED THAT EVERYTHING WAS "OPERATING AS DESIGNED AND INTENDED." THE SERVICE WRITER AT THE DANBURY AUDI DEALER TOLD ME THAT AUDI FELT THE PROBLEM WAS THE FLOOR MAT, AND SUGGESTED I PURCHASE HEAVY WINTER-TYPE MATS. I RENEWED MY COMPLAINT TO AUDI IN THE FALL OF 2009 IN…”
Engine and engine cooling
1 report1 fire
“OWNER WAS DRIVING THE AUDI HOME WHEN HE SMELLED SOMETHING BURNING. HE PULLED OVER AND OBSERVED A FIRE IN THE ENGINE COMPARTMENT. FIRE BURNED WITH GREATEST INTENSITY IN LOWER LEFT REAR OF ENGINE COMPARTMENT, FROM LOCATION OF LEFT SIDE CATALYTIC CONVERTER. SPARK PLUGS REMOVED FROM ENGINE SHOWED OVERFUELING PROBLEM IN #6 AND #8 CYLINDERS ON LEFT BANK, CAUSING CATALYTIC CONVERTER TO OVERHEAT AND START THE FIRE. *NM”
Electrical system
1 report
“DT*: THE CONTACT STATED WHILE DRIVING 10 MPH AND PREPARING TO STOP AT A TRAFFIC LIGHT, THE STEERING WHEEL LOCKED, THE EMERGENCY BRAKE ENGAGED AND THE WARNING LIGHTS ON THE DASH ILLUMINATED. THE VEHICLE WAS UNABLE TO BE MANEUVERED OFF THE ROAD AND WAS TOWED TO THE DEALER, WHO DETERMINED THE ENTIRE COMPUTER SYSTEM FAILED. THE FAILURE WAS DUE TO LIQUID WHICH SPILLED IN THE BACK SEAT, RAN DOWN INTO THE SEAT, AND CAME INTO CONTACT WITH THE TIRE PRESSURE MONITORING CONTROL MODULE. THE DEALER REPLACED THE TIRE PRESSURE MONITORING CONTROL MODULE, STEERING WHEEL AND LOCK. UPDATED 10/25/2006 - *NM”
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 30, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.