2015 Audi A6 problems & reliability
22 owner complaints filed with NHTSA for the 2015 Audi A6, alongside 4 safety recall campaigns. Last verified Sep 21, 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 components.
1 complaint report injuries (1 injured).
Federal crash records (FARS 2020–2023): 2015 Audi A6 vehicles were involved in 13 fatal crashes with 6 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 |
|---|---|---|
| Engine | 6 | 27% |
| Air Bags | 4 | 18% |
| Engine and Engine Cooling | 4 | 18% |
| Electrical System | 3 | 14% |
| Fuel/propulsion System | 2 | 9% |
| Service Brakes | 2 | 9% |
| Steering | 2 | 9% |
| Unknown / Other | 2 | 9% |
| Power Train | 1 | 5% |
| Suspension | 1 | 5% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 11 reported components →Complaints by incident year
What owners report
“The contact's sister owns a 2015 Audi A6. The contact stated that while his sister was driving 35 MPH, the vehicle crashed into the rear of a Toyota 4Runner. The driver sustained injuries to the chest and neck and had back pain. Medical attention was not provided. The front bumper and frame, and hood were damaged. The…”
Air Bags · filed Jul 24, 2026
“I am writing to report a serious and life-threatening safety incident involving my Audi vehicle following recent service performed by an authorized Audi dealer. Vehicle information: Model: Audi (2015) VIN: [XXX] Servicing Dealer: Audi Lafayette IN Date of Service: 2026-01-14 A few days after the service appointment…”
Wheels · filed Jan 17, 2026
“The contact owns a 2015 Audi A6. The contact stated that while driving on neighborhood roads at approximately 25 MPH, the coolant warning light was illuminated. The contact proceeded to park on the side of the road and walk to her residence to pick up coolant to refill the coolant tank. The vehicle was then taken to…”
Engine and Engine Cooling · filed Oct 16, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
1,108 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2015 Audi A6. The 10 most recent:
This bulletin provides information when the horn sound quality is poor.
TSB_2074436_3 · Service Bulletin/Repair Instructions · issued Aug 26, 2026
This bulletin provides information for all models regarding brake sounds.
TSB_2069904_3 · Service Bulletin/Repair Instructions · issued Aug 21, 2026
This bulletin provides information on the zirconium insercts in the brake piston (ceramic brakes only).
TSB_2069078_4 · Service Bulletin/Repair Instructions · issued Aug 21, 2026
This TSB describes a corrosion issue due to outside influence and the prohibition of warranty in these cases.
TSB_2068999_4 · Service Bulletin/Repair Instructions · issued Aug 21, 2026
This bulletin provides information when there is corrosion on the friction survace of steel brake discs.
TSB_2067132_4 · Service Bulletin/Repair Instructions · issued Aug 21, 2026
This bulletin provides information about leather care and seat repair.
TSB_2076945_2 · Service Bulletin/Repair Instructions · issued Aug 20, 2026
This bulletin provides information when there is a paint issue on alloy wheels.
TSB_2079732_2 · Service Bulletin/Repair Instructions · issued Aug 11, 2026
This bulletin provides information about the general approach for brake vibration concerns.
TSB_2075120_3 · Service Bulletin/Repair Instructions · issued Aug 11, 2026
This bulletin provides information on the GFF test plan required for AC compressor replacements regardless of the concern.
TSB_20741717_15 · Service Bulletin/Repair Instructions · issued Aug 11, 2026
This bulletin provides information when there is an ABS/ESC speed sensor implausible signal.
TSB_2072304_4 · Service Bulletin/Repair Instructions · issued Aug 11, 2026
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 2015 Audi A6 has 4 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 2015 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.