Built from NHTSA complaints and recalls collected for this model, generated September 21, 2026. Totals reflect what has been collected, not every complaint ever filed.
Recalls
0 total
Safety issues the manufacturer must repair for free. A recall means confirm the fix was done, not walk away.
No recalls on record for this model
No safety recalls were found in this dataset. It is still worth entering the exact VIN on NHTSA before purchase, since recalls can be added at any time.
Owner complaints by system
2 total
Unverified reports owners filed with NHTSA, grouped by the part of the car. Useful for spotting patterns. Open a group to read recent examples.
Engine & powertrain
Minor1
Most reports here involve software faults.
software faults 1
A recent report: The contact owns a 2021 Audi S4. The contact stated that while driving at an undisclosed speed, the vehicle experienced a loss of automotive power. The check engine warning light was illuminated. The…Read full complaint
The contact owns a 2021 Audi S4. The contact stated that while driving at an undisclosed speed, the vehicle experienced a loss of automotive power. The check engine warning light was illuminated. The message "Drive System Malfunction - Please Contact Service" was displayed. In addition, the vehicle hesitated to restart and shift into gear as intended. The contact stated that the failure had progressed over time. The vehicle was taken to a local dealer, where it was diagnosed with needing a pending software service update; however, the repairs would not be available until the end of 2025. The manufacturer was made aware of the failure. The failure mileage was approximately 31,000.
A recent report: 2021 AUDI S4. CONSUMER WRITES IN REGARD TO NHTSA SAFETY RECALL 22V-742. THE CONSUMER IS DISGUSTED AND DISATISFIED WITH THE AUDI SERVICE DEPARTMENT PROCEDURES FOR PERFORMING THE RECALLS.
Is 2 complaints a lot? They were filed between 2023 and 2025, roughly 1 a year, which is fewer than the typical model in this dataset. We do not have sales figures for this model, so treat this as a rough volume, not a rate per car on the road. Popular, high-volume models naturally collect more complaints over time.