2021 Audi A4 Other or unknown Problems
- Complaints
- 3about this part
- Share
- 27%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 3 complaints about the other or unknown of the 2021 Audi A4, 27% of the 11 complaints for this model year. 1 of these say a crash was involved, according to the filers.
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.
“The instrument cluster has failed per the recall 90VC. Audi issued the recall for every model made in 2021 with the exception of the A3 and A4 and I believe this was a mistake as my instrument cluster has the same failure.”
NHTSA complaint #11680440, filed 2025-08“The reversing image occasionally appears white screen phenomenon During the process of reversing, the reversing screen suddenly turns white and cannot see anything behind, which brings danger to the driver and others, causing danger to life and property. Apparently the dealer didn't take this seriously”
NHTSA complaint #11459964, filed 2022-04Related service bulletins
- 11038130Sep 25, 2026This bulletin states that technicians are required to report to the manufacturer when a vehicle has flooded, and specify the height to which the vehicle has been flooded.
- 11038027Sep 25, 2026This bulletin provides information for reporting safety related information to the manufacturer.
- 11038025Sep 15, 2026This bulletin provides information when the license plate mounting bracket threded inserts are stripped.
- 11038026Sep 8, 2026This bulletin provides infomraiton abou the Audi frequency analysis application, which is available in the App Store for Android and Apple phones.
- 11036917Aug 26, 2026This bulletin provides information when the horn sound quality is poor.
- 11036933Aug 21, 2026A particularly noticeable factor is the vibration of the air column in a tire. When a tire starts to vibrate because of the road contact, this can lead to cavity resonances…
- 11036934Aug 11, 2026This bulletin provides information when there is a paint issue on alloy wheels.
- 11035854Jul 27, 2026This bulletin provides a statement regarding the bottleneck of supply for VW approved oil types VW 504.00 and VW 507.00.
- 11034659Jun 29, 2026This bulletin provides a deployment overview for customer service packages MLB and MQB for MIB3/connectivity box/OCU3/LSR.
- 11034642Jun 4, 2026This Reporting Obligation requires technicains to contact the Technical Assistance Center (TAC) in cases where the airbag/seatbelt is deployed/not deployed; general accident…
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2023 | 1 | 10% |
| 2022 | 3 | 50% |
| 2021 | 3 | 27% |
| 2020 | 60 | 47% |
| 2019 | 3 | 30% |
| 2018 | 18 | 40% |
| 2017 | 10 | 18% |
| 2016 | 1 | 9% |
| 2015 | 2 | 11% |
| 2014 | 2 | 6% |
| 2013 | 3 | 13% |
| 2010 | 1 | 2% |
| 2009 | 7 | 6% |
| 2008 | 2 | 1% |
| 2007 | 8 | 4% |
| 2006 | 7 | 2% |
| 2005 | 3 | 1% |
| 2004 | 6 | 3% |
| 2003 | 2 | 1% |
| 2002 | 4 | 2% |
| 2001 | 4 | 3% |
| 2000 | 2 | 2% |
| 1999 | 2 | 1% |
| 1998 | 2 | 1% |
| 1997 | 2 | 2% |
| 1996 | 6 | 7% |
Other parts of the 2021 Audi A4
3 complaintsForward collision avoidance
2 complaintsLane departure
2 complaintsSuspension
2 complaintsTransmission and drivetrain
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