CarRecallWatchThe 2021 Audi A4 has 4 safety recalls on file with NHTSA.
Owners have filed 11 complaints with NHTSA, including 3 crashes, 1 injury.
The most-reported problem area is Unknown Or Other (3 reports).
2021 Audi A4 recalls
Rearview camera may show blank screen in reverse
A software problem can cause the rearview camera display to show a blank or black screen instead of the camera image when the vehicle is put in reverse.
Rear axle misalignment can cause uneven tire wear and crash risk
Audi is recalling certain vehicles because the rear axle alignment may not have been inspected after repairs made under an earlier recall were performed.
Rear Seat Belt May Fail to Secure Child Car Seats
Rear seat belt retractors in these vehicles may deactivate early, which can stop a child restraint system from being held securely in place.
Rear axle lock nut can break, risking loss of control
A lock nut on the trailing arm of the rear axle can break over time because of stress corrosion.
Most common 2021 Audi A4 problems
Problem areas named in the 11 complaints owners filed with NHTSA.
| Problem area | Reports |
|---|---|
| Unknown Or Other | 3 |
| Electrical System | 3 |
| Vehicle Speed Control | 2 |
| Suspension | 2 |
| Power Train | 2 |
| Lane Departure | 2 |
| Forward Collision Avoidance | 2 |
| Air Bags | 1 |
| Engine | 1 |
| Tires | 1 |
What owners report
The instrument cluster has stop working. Have to monitore vehicle information, Mileage, service, Safty notifications and general vehicle information from the Audi app.
Tires are original equipment. Only 19,000 miles on them. Was told all 4 tires have belt shifts and hop some. Suggested they should be replaced. These tires were great when new but you could tell from driving they were degrading. I'm [XXX] and never had an issue with tires this new. The belt shifting could be a manufacturing issue or hitting to many potholes. I suspect it is a combination of the two. Tire size is 245/40R18. Looking at internet reviews, these tires are great but wear out very prematurely. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I am writing to report a persistent issue with my 2021 Audi A4, VIN [XXX] . I have been experiencing a noticeable vibration, humming, and shuddering sensation that occurs specifically when turning at slow speeds (e.g., in a parking lot or when making a tight turn at an intersection). This issue has been diagnosed at a dealership, and the diagnostic report from the service invoice dated 07/12/2025 noted "VIBRATION HUMMING SHUDDER WHILE TURNING." The vehicle's mileage at the time was 38,888 miles. Dealership diagnosed this issue as a failing AWD clutch system. I took the car to a different repair shop, and they redirected me to the Audi Technical Service Bulletin (TSB). The symptoms describ
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.
I have a 2021 audi a4 that is also being affected by the instrument cluster failure/recall. My model , a4 was not included but I am experiencing the same failure and this was reported to the dealership. An online search will show just how many people have issues with the instrument cluster. The instrument cluster screen just went out while driving. I have to monitor my functions via the app on my phone. The dealer wants to charge me full price when every other model in 2021 has been recalled for the same issue. The A4 should be added to the instrument cluster recall for 2021 audi.
2021 Audi A4 questions
Does the 2021 Audi A4 have any recalls?
Yes. NHTSA lists 4 safety recalls for the 2021 Audi A4: Rearview camera may show blank screen in reverse; Rear axle misalignment can cause uneven tire wear and crash risk; Rear Seat Belt May Fail to Secure Child Car Seats; Rear axle lock nut can break, risking loss of control. Recall repairs are normally free at an authorized dealer.
What are the most common problems with the 2021 Audi A4?
Based on 11 owner complaints filed with NHTSA, the most-reported problem areas are Unknown Or Other (3), Electrical System (3), Vehicle Speed Control (2).
How do I check if a recall on my 2021 Audi A4 has been fixed?
Enter your 17-character VIN in our VIN recall check. It shows open recalls that have not been repaired on your specific vehicle. Recall repairs are normally free at an authorized dealer.