2021 Audi A6 Engine Problems
- Complaints
- 3about this part
- Share
- 17%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 3 complaints about the engine of the 2021 Audi A6, 17% 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.
“While operating the vehicle under normal driving conditions, the vehicle suffered an immediate, un-commanded loss of engine power and throttle response. The vehicle displayed a critical dashboard restriction stating: “Maximum engine speed 2500 RPM”, forcing an emergency limp-home mode that instantly created a roadway collision hazard. …”
NHTSA complaint #11765960, filed 2026-09“Car reported an engine restarter issue (with battery symbol) and recommended to contact the dealer. Car next shut down automatic restart system, and air conditioning stopped working. Within a short period of time (same day), the car listed a red battery symbol and advised to stop the car. After doing so and contacting the Audi roadside, the car was listing a series of issues on multiple symptoms while also saying in the warning message still okay to drive . These systems included steering, braking, and what seemed to be other sensors the car powers. …”
NHTSA complaint #11543607, filed 2023-09Related service bulletins
- 11038129Sep 25, 2026This bulletin provides information when the starter/generator drive belt is noisy or came off.
- 11038090Sep 14, 2026This bulletin provides information when there is an abnormal knocking noise from the engine compartment; V6 3.0L TFSI.
- 11036938Aug 13, 2026This bulletin provides information when there is an abnormal engine knocking noise from the engine compartment; V6 3.0L TFSI.
- 11034657Jun 26, 2026This bulletin provides information when there is increased oil consumption; >0.5ltr/1000 km.
- 11034728Jun 10, 2026This bulletin provides informaiton when the engine is not running smoothly, misfiring.
- 11034656Jun 4, 2026This bulletin provides information when DTC U140A00 Terminal 30 is stored in the ECM.
- 11032174Apr 15, 2026This bulletin provides information when there is an abnormal engine knocking noise from the engine compartment; V6 3.0L TFSI.
- 11032173Apr 15, 2026This bulletin provides information when there is an abnormal engine knocking noise from the engine compartment; V6 3.0L TFSI.
- 11031044Mar 13, 2026This bulletin provides information when there is a Drive System Malfunction, DTCs related to Knock Sensor P0327, P0332, P0328, P0333 - V6 TFS.
- 11031000Mar 10, 2026This bulleitn provides informaiton when there is a loose engine oil filler cap; P006800, P227900, P050700 - 2.0 ltr. TFSI.
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 1 | 14% |
| 2021 | 3 | 17% |
| 2020 | 1 | 4% |
| 2019 | 32 | 28% |
| 2018 | 7 | 64% |
| 2017 | 4 | 20% |
| 2016 | 17 | 33% |
| 2015 | 6 | 27% |
| 2014 | 5 | 12% |
| 2013 | 15 | 29% |
| 2012 | 13 | 22% |
| 2011 | 2 | 10% |
| 2010 | 1 | 6% |
| 2008 | 2 | 3% |
| 2007 | 2 | 4% |
| 2006 | 4 | 6% |
| 2005 | 4 | 4% |
| 2004 | 1 | 3% |
| 2003 | 3 | 5% |
| 2002 | 5 | 6% |
| 2001 | 2 | 2% |
Other parts of the 2021 Audi A6
11 complaintsForward collision avoidance
2 complaintsOther or unknown
2 complaintsTransmission and drivetrain
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 28, 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