Audi · Model Report
Showing safety data for the 2021 model year only.
The instrument cluster has stop working. Have to monitore vehicle information, Mileage, service, Safty notifications and general vehicle information from the Audi app.
No injuries · No fire · No crash
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)
No injuries · No fire · No crash
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)
No injuries · No fire · No crash
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.
No injuries · No fire · No crash
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.
No injuries · No fire · No crash
Audi Technical Service Bulletin 2067558/2 addresses an unpleasant noise that occurs when folding the electric exterior mirrors on 2021-2024 Audi A4, A4 allroad, and S4 models. The noise is caused by insufficient lubrication leading to a 'slip-stick effect' in the mirror's spring assembly.
Audi has released Technical Service Bulletin (TSB) 2065234/2 to address a tail lamp warning and various diagnostic trouble codes (DTCs) such as B16D431, B16D631, B16D531, and B16D731 stored in the comfort module of 2021 Audi A4, S4, and A4 allroad vehicles. The issue stems from overly sensitive…
Audi has issued Technical Service Bulletin 2074766/2 for 2021 Audi A4 vehicles experiencing humming noises from the 0CK gearbox during slow turns. This TSB outlines a repair involving the replacement of Automatic Transmission Fluid (ATF) to resolve the issue.
Audi has issued Technical Service Bulletin (TSB) 2067558/1 to address a grinding or rubbing noise from the exterior rearview mirrors when they fold in or out on 2020-2024 A4, S4, and A4 allroad models. The issue is due to insufficient lubrication of plastic washers within the mirror mechanism.
Audi has released a software update to resolve issues with the 'tail lamp warning' and instances where the warning may flash quicker after actuation on certain 2021 Audi A4 and S4 vehicles. This update aims to address various diagnostic trouble codes (DTCs) related to the exterior lighting system.
This document outlines the Pre-Delivery Inspection (PDI) checklist for the 2021 Audi A4 and S4, ensuring vehicles meet Audi's quality standards before customer delivery. It covers various checks from interior and exterior to settings, driving performance, and includes critical information about…
Audi has issued a manufacturer communication, NHTSA ID 10185210, for 2021 Audi A4 and S4 models regarding infotainment online data settings. This TSB advises owners to verify specific radio settings, 'Online additional data' and 'online station tracking', to ensure proper functionality of online…
This document outlines the detailed Pre-Delivery Inspection (PDI) checklist for 2021 Audi A4 and S4 vehicles. It covers essential checks from vehicle preparation and interior functions to driver assistance systems and Audi connect® setup, ensuring every new Audi meets strict quality and safety…
This manufacturer communication, Audi Delivery Guidelines Version 1.1 (NHTSA ID 10180045), outlines the comprehensive checklist for dealers to follow when delivering new 2021 Audi A4 and S4 vehicles. It covers everything from pre-delivery inspection to feature demonstrations and owner document…
This document outlines the comprehensive Pre-Delivery Inspection (PDI) for 2021 Audi A4 and S4 models, ensuring vehicles meet Audi's quality standards before customer delivery. It covers everything from exterior checks to advanced system settings and includes important information regarding the…
Before taking delivery of a new 2021 Audi A4, S4, or A4 allroad, technicians follow a detailed Pre-Delivery Inspection (PDI) checklist. This ensures all systems, features, and safety components are functioning correctly and configured for the owner.
Before a new 2021 Audi A4 or S4 is delivered, technicians perform a comprehensive Pre-Delivery Inspection (PDI). This checklist ensures all systems, including Audi connect and the emergency call function, are fully operational and meet Audi's quality standards.