NHTSA Complaint #11681029 — 2021 AUDI A4

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 described in the TSB—"vibrations, humming, droning, or rubbing can be heard and/or felt in the vehicle interior... when the steering wheel is turned to full lock"—perfectly matches my experience. TSB Link - [XXX] The vehicle details are: Model: Audi A4 Year: 2021 VIN: [XXX] Current Mileage: 39490 Since this is an issue due to a sub-optimal part shipped by Audi, many other Audi owners are also facing similar issues. Therefore, I want to report this issue to the NHTSA and take action on cars sold by Audi. This issue divert driver attention and is a potential cause of accident while taking the turn as driver may get distracted. I already got my car serviced at Audi dealership but they didn't inform me about this issue while the car was under warranty. Now the car is out of warranty after Apr-2025, I'm facing this issue significantly and dealership is charging close to $5000 to fix the issue. Please let me know what information you require from me to proceed. I would like Audi to place a recall on the car models facing this issue and implement the fix for all owners facing the issue because of faulty part shipped by Audi of America. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)