2005 Audi A6 problems & reliability
91 owner complaints filed with NHTSA for the 2005 Audi A6, alongside 3 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
1 complaint report injuries (1 injured).
Federal crash records (FARS 2020–2023): 2005 Audi A6 vehicles were involved in 6 fatal crashes with 4 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Air Bags | 43 | 47% |
| Electrical System | 16 | 18% |
| Steering | 8 | 9% |
| Exterior Lighting | 6 | 7% |
| Electronic Stability Control (esc) | 5 | 5% |
| Service Brakes | 5 | 5% |
| Visibility | 5 | 5% |
| Engine | 4 | 4% |
| Vehicle Speed Control | 4 | 4% |
| Engine and Engine Cooling | 3 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 86,359 miles (middle 50% between 51,000 and 124,250 miles), based on 52 complaints that included mileage.
Complaints by incident year
What owners report
“When this steering problem is occurring no communication between the steering and driver and accident happened and its very dangerous!!! DTC 00456 (Access/start control module -J518- no communication) is found in several control modules or the access/start authorization control module, J518 (address word 05)…”
Steering · filed Jan 25, 2022
“Audi of america sent me a flyer (attached) offering $100 in audi goods and services as an incentive to complete the replacement of a takata airbag recall. Since may 2nd, now almost 5 months later, audi has still failed to provide the offered incentive despite me contacting them and their promise it would be resolved…”
Air Bags · filed Oct 27, 2019
“Nov 17 2017 on my way to work , I got a flat tired so I had to pull over .. Right at the intersection of on clairemont going north on the 805. The”
Wheels · filed Jul 3, 2019
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- FUEL TANK LEAK
Preliminary Evaluation PE08008 · opened Jan 31, 2008 · closed May 30, 2008 · led to recall 08V157000
Technical service bulletins
380 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2005 Audi A6. The 10 most recent:
This bulletin provides information on the additional reporting requirements for safety related inquiries.
A0023742052680_4 · Service Bulletin/Repair Instructions · issued Oct 4, 2023
Inside the Rings | Volume 12, Spring 2023
DC_AudiRingsV12 · Service Bulletin/Repair Instructions · issued Apr 28, 2023
In conjunction with the Massachusetts DMV, Audi will be sending Takata airbag recall reminder notices to approximately 2,907 Audi owners in the State of Massachusetts on March 13, 2023.
TRMDMV_MA_Audi · Service Bulletin/Repair Instructions · issued Mar 13, 2023
In conjunction with the New Mexico DMV, Audi will be sending Takata airbag recall reminder notices to approximately 389 Audi owners in the State of New Mexico on March 13, 2023.
TRMDMV_NM_Audi · Service Bulletin/Repair Instructions · issued Mar 13, 2023
In conjunction with the Colorado DMV, Audi will be sending Takata airbag recall reminder notices to approximately 2,174 Audi owners in the State of Colorado on February 13, 2023.
TRMDMV_CO_Audi · Service Bulletin/Repair Instructions · issued Feb 13, 2023
Takata recall and 3G turndown
DC_Rings_VOL10 · Service Bulletin/Repair Instructions · issued Feb 10, 2023
In conjunction with the New York DMV, Audi will be sending Takata airbag recall reminder notices to approximately 5,165 Audi owners in the State of New York on October 17, 2022.
TRMDMV_NY_Audi · Service Bulletin/Repair Instructions · issued Oct 17, 2022
In conjunction with the South Carolina Department of Public Safety, Audi is sending Takata airbag recall reminder notices to approximately 1,121 Audi owners in the state of South Carolina on September 19, 2022.
TRMDPS_SC_Audi · Service Bulletin/Repair Instructions · issued Sep 19, 2022
In conjunction with the Georgia Department of Revenue - Motor Vehicle Division and Department of Driver Services, Audi sent Takata airbag recall reminder notices to approximately 565 Audi owners in the State of Puerto…
TRMDMV_PR_Audi · Service Bulletin/Repair Instructions · issued Jul 25, 2022
In conjunction with the Virginia DMV, Audi will be sending Takata airbag recall reminder notices to approximately 2,026 Audi owners in the State of Virginia on July 21, 2022.
TRMDMV_VA_Audi · Service Bulletin/Repair Instructions · issued Jul 21, 2022
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2005 Audi A6 has 3 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2005 Audi A6?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 86,359 miles — budget accordingly if the car is approaching that mileage.