Transmission and drivetrainPart report
2021 Audi A4 Transmission and drivetrain Problems
- Complaints
- 2about this part
- Share
- 18%of 11 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 A4, 18% of the 11 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Related 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…
- 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.
- 11022669Aug 15, 2025This bulletin provides informaoitn when there is droning noises/vibrations in tight corneres, in vehicles that have quattro with ultra technology.
- 11021441Jul 30, 2025This bulletin providesi nformation when various DTCs are stored; high maximum temperature recorded for clutch K1.
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 1 | 17% |
| 2021 | 2 | 18% |
| 2018 | 5 | 11% |
| 2017 | 4 | 7% |
| 2016 | 1 | 9% |
| 2015 | 1 | 5% |
| 2014 | 2 | 6% |
| 2012 | 2 | 11% |
| 2011 | 3 | 27% |
| 2010 | 9 | 14% |
| 2009 | 6 | 5% |
| 2008 | 12 | 7% |
| 2007 | 11 | 6% |
| 2006 | 14 | 5% |
| 2005 | 16 | 7% |
| 2004 | 12 | 6% |
| 2003 | 43 | 20% |
| 2002 | 16 | 9% |
| 2001 | 5 | 4% |
| 2000 | 8 | 8% |
| 1999 | 10 | 5% |
| 1998 | 7 | 3% |
| 1997 | 5 | 5% |
| 1996 | 6 | 7% |
Other parts of the 2021 Audi A4
Electrical system
3 complaintsOther or unknown
3 complaintsForward collision avoidance
2 complaintsLane departure
2 complaintsSuspension
2 complaintsVehicle speed control
2 complaintsAir bags
1 complaintsEngine
1 complaintsTires
1 complaints
3 complaintsOther or unknown
3 complaintsForward collision avoidance
2 complaintsLane departure
2 complaintsSuspension
2 complaintsVehicle speed control
2 complaintsAir bags
1 complaintsEngine
1 complaintsTires
1 complaints
← All problems reported for the 2021 Audi A4
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