EnginePart report
2021 Audi A4 Engine Problems
- Complaints
- 1about this part
- Share
- 9%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 1 complaints about the engine of the 2021 Audi A4, 9% 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
- 11038129Sep 25, 2026This bulletin provides information when the starter/generator drive belt is noisy or came off.
- 11034669Jun 30, 2026This bulletin provides information when there DTC P218500 is stored in temerature sender G83.
- 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.
- 11031000Mar 10, 2026This bulleitn provides informaiton when there is a loose engine oil filler cap; P006800, P227900, P050700 - 2.0 ltr. TFSI.
- 11029368Feb 20, 2026This bulletin provides information on the use of the Audi frequencly analysis app, and where the application can be downloaded.
- 11029367Feb 20, 2026This bulletin provides information on VIN Plates, Safety Certification labels, and the ordering procedures.
- 11028398Jan 14, 2026This bulletin provides information regarding UV leak additive for finding oil leaks.
- 11027439Dec 19, 2025This bulletin provides service information when there is dirt or a small amount of oil residue on the engine mounting.
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2023 | 3 | 30% |
| 2022 | 2 | 33% |
| 2021 | 1 | 9% |
| 2019 | 2 | 20% |
| 2018 | 5 | 11% |
| 2017 | 22 | 39% |
| 2016 | 7 | 64% |
| 2015 | 10 | 53% |
| 2014 | 13 | 41% |
| 2013 | 6 | 25% |
| 2012 | 13 | 68% |
| 2011 | 7 | 64% |
| 2010 | 37 | 58% |
| 2009 | 44 | 37% |
| 2008 | 13 | 7% |
| 2007 | 17 | 9% |
| 2006 | 15 | 5% |
| 2005 | 10 | 5% |
| 2004 | 7 | 4% |
| 2003 | 7 | 3% |
| 2002 | 5 | 3% |
| 2001 | 2 | 2% |
| 1998 | 2 | 1% |
Other parts of the 2021 Audi A4
Electrical system
3 complaintsOther or unknown
3 complaintsForward collision avoidance
2 complaintsLane departure
2 complaintsSuspension
2 complaintsTransmission and drivetrain
2 complaintsVehicle speed control
2 complaintsAir bags
1 complaintsTires
1 complaints
3 complaintsOther or unknown
3 complaintsForward collision avoidance
2 complaintsLane departure
2 complaintsSuspension
2 complaintsTransmission and drivetrain
2 complaintsVehicle speed control
2 complaintsAir bags
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