2021 Audi A6 Transmission and drivetrain Problems
- Complaints
- 2about this part
- Share
- 11%of 18 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the transmission and drivetrain of the 2021 Audi A6, 11% of the 18 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My alternator was not working and it was a recall and I paid to fix it and they don’t wanna pay me back. I got a new part from audi and fix it at the shop and they don’t wanna pay anything just called and she said we don’t pay only if he’s done at the dealer. And I don’t believe that! Bc dealer told me they pay if I fix it any where to get done quick bc was out stock”
NHTSA complaint #11720235, filed 2026-02“I was driving my vehicle when the engine surged and then a transmission warning light came on and there was an immediate and complete loss of drive power. After the vehicle glided to a stop, there was no drive transmission in either forward or reverse. There was no pre-warning and no earlier incidence that led up to this issue. The vehicle is five years old with 39,834 miles and has had all routine maintenance and mileage interval services performed at the dealership, including its recent (Dec-25) 40,000-mile service. …”
NHTSA complaint #11730290, filed 2026-04Related service bulletins
- 11036901Aug 4, 2026This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
- 11033474May 28, 2026This bulletin provides information when there are noises after selecting a ear while idling and the vehicle is stationary, or while driving.
- 11033465May 27, 2026This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
- 11033475May 6, 2026The high-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content (energy density) being reduced. This reduction in the…
- 11030999Mar 24, 2026This bulleitn provides informiaotn when there is a loss of coolant; mechanical coolant pump 2.9L, 3.0L V6 TFSI.
- 11031003Mar 20, 2026This bulletin provides information when the hydraulic pump cannot be adapted - P17EF00 in gearbox control unit.
- 11028433Jan 22, 2026This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
- 11027358Dec 11, 2025This bulletin provides additoinal information to assist in determining the energy content of lithium-ion high-voltage batteries.
- 11023739Sep 26, 2025This bulletin provides information when the starter/generator drive belt is noisy or came off.
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 1 | 14% |
| 2021 | 2 | 11% |
| 2019 | 15 | 13% |
| 2018 | 1 | 9% |
| 2016 | 5 | 10% |
| 2015 | 1 | 5% |
| 2014 | 1 | 2% |
| 2013 | 2 | 4% |
| 2012 | 8 | 13% |
| 2011 | 1 | 5% |
| 2009 | 1 | 5% |
| 2008 | 3 | 4% |
| 2007 | 3 | 6% |
| 2006 | 3 | 4% |
| 2005 | 3 | 3% |
| 2004 | 1 | 3% |
| 2003 | 10 | 15% |
| 2002 | 10 | 11% |
| 2001 | 14 | 12% |
| 2000 | 8 | 5% |
| 1999 | 12 | 6% |
| 1998 | 2 | 2% |
| 1997 | 1 | 5% |
| 1996 | 2 | 4% |
| 1995 | 1 | 6% |
Other parts of the 2021 Audi A6
11 complaintsEngine
3 complaintsForward collision avoidance
2 complaintsOther or unknown
2 complaintsEngine cooling
1 complaintsExterior lighting
1 complaintsFuel system
1 complaintsSteering
1 complaintsBody and structure
1 complaints
← All problems reported for the 2021 Audi A6
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology