2021 Audi S4 Recalls, Complaints & Specs
4 safety recalls list the 2021 Audi S4, and owners have filed 2 complaints with NHTSA. Check your own VIN below.
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4 safety recalls for the 2021 Audi S4
Most recent first. Recall repairs are free at any authorised dealer. Click a recall for the full defect, consequence and remedy text.
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Display function (back over prevention)
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Audi A8, RS7, RS6 Avant, RS5 Sportback, RS5 Coupe, Q8, Q7, Q5 Sportback, S4 Sedan, Q5, A7, A6, A6 Allroad, A5 Sportback, A5 Coupe, A5 Cabrioleet, A4 Sedan, A4 Allroad, E-Tron Sportback Quattro, SQ7, S5 Cabriolet, E-Tron Quattro, SQ8, SQ5 Sportback, SQ5, S8, S7, S6…
Remedy: Dealers will update the infotainment unit software, free of charge. Owner notification letters were mailed October 25, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Volkswagen's number for this…
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Tires and non-powered axle assembly (suspension)
Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2021 Audi A5 Sportback, RS5 Coupe, RS5 Sportback, S5 Sportback, 2020-2021 A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A6 Allroad, A6 Sedan, A7, A8, Q5, S4 Sedan, S5 Coupe, S5 Cabriolet, S6 Sedan, S7, S8, SQ5, 2021 Q5 Sportback, Q7, Q8, RS6 Avant, RS7, RSQ8, SQ5…
Remedy: Dealers will inspect the rear axle, adjust the alignment as necessary, and replace any prematurely or unevenly worn tires, free of charge. Owner notification letters were mailed March 3, 2022. Owners may contact Audi…
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Seat belts and retractor (seat belts)
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Volkswagen ID4, Audi A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A5 Sportback, A6 Allroad, A6 Sedan, A7, A8, E-Tron Quattro, E-Tron Sportback Quattro, Q3, Q5, Q5 Sportback, Q7, Q8, RS5 Sportback, RS5 Coupe, RS6 Avant, RS7, RSQ8, S4 Sedan, S5 Cabriolet, S5 Coupe,…
Remedy: Dealers will inspect, and replace as necessary, the middle-rear seat belt assemblies, free of charge. Owner notification letters were mailed August 27, 2021. Owners may contact Volkswagen customer service at…
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Non-powered axle assembly (suspension)
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Q7, Q8, Q5 Sportback, SQ5 Sportback, RS6 Avant, RS7, RS Q8, 2020-2021 Audi S6 sedan, Q5, A8, S8, A7, A6 Allroad, A5 Cabriolet, A4 sedan, A4 Allroad, SQ5, S7, A6 sedan, S5 coupe, S4 sedan, S5 Cabriolet, A5 coupe, 2019-2021 RS5 coupe, A5 Sportback, S5 Sportback, RS5…
Remedy: Dealers will replace the lock nuts and, if necessary, the associated bolts, free of charge. Owner notification letters were mailed June 4, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number…
2 owner complaints filed with NHTSA
Owners of the 2021 Audi S4 have filed 2 complaints with NHTSA. The average mileage at failure in those reports is 31,000 miles. Complaints peaked in 2023 with 1 filed that year.
Most-reported components
What owners are reporting
“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”
Owner complaint to NHTSA, September 25, 2025 · Electrical system
“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.”
Owner complaint to NHTSA, January 31, 2023 · Unknown or other
Fuel economy and specs
EPA ratings for the 2021 Audi S4. Ranges cover every tested configuration.
| Combined | 23 mpg |
|---|---|
| City / Highway | 20 / 28 |
| Fuel | Premium |
| EPA class | Compact Cars |
| Engine | 6 cyl, 3 L |
| Transmission | Automatic (S8) |
Compare Audi S4 model years
Recall and complaint counts for every Audi S4 model year in NHTSA's database.
| Model year | Recalls | Complaints |
|---|---|---|
| 1989 Audi S4 | 1 | 0 |
| 1990 Audi S4 | 1 | 0 |
| 1991 Audi S4 | 1 | 0 |
| 1992 Audi S4 | 2 | 5 |
| 1993 Audi S4 | 2 | 16 |
| 1994 Audi S4 | 2 | 7 |
| 1995 Audi S4 | 2 | 1 |
| 1996 Audi S4 | 1 | 0 |
| 2000 Audi S4 | 1 | 143 |
| 2001 Audi S4 | 1 | 87 |
| 2002 Audi S4 | 1 | 22 |
| 2003 Audi S4 | 1 | 1 |
| 2004 Audi S4 | 1 | 29 |
| 2005 Audi S4 | 2 | 43 |
| 2006 Audi S4 | 2 | 30 |
| 2007 Audi S4 | 2 | 13 |
| 2008 Audi S4 | 2 | 4 |
| 2009 Audi S4 | 2 | 0 |
| 2010 Audi S4 | 0 | 60 |
| 2011 Audi S4 | 1 | 26 |
| 2012 Audi S4 | 1 | 22 |
| 2013 Audi S4 | 1 | 33 |
| 2014 Audi S4 | 1 | 17 |
| 2015 Audi S4 | 1 | 1 |
| 2018 Audi S4 | 2 | 7 |
| 2019 Audi S4 | 1 | 2 |
| 2020 Audi S4 | 3 | 16 |
| 2021 Audi S4 | 4 | 2 |
| 2022 Audi S4 | 1 | 1 |
Checking a specific 2021 Audi S4
How do I know if my 2021 Audi S4 has an open recall?
Enter your 17-character VIN above. The VIN is on the driver's side dashboard (visible through the windshield), the driver's door jamb sticker, and your registration or insurance card. The check runs against NHTSA's live database and tells you which campaigns list your vehicle. 4 campaigns currently list the 2021 Audi S4; your car may already have been repaired under some of them.
Is the recall repair free?
Yes. Under federal law, manufacturers must fix safety recalls at no charge for vehicles up to 15 years old from the date of sale to the first owner. Contact any authorised Audi dealer with your VIN and the NHTSA campaign number (for example 21V295000).
What is the difference between a recall and a complaint?
A recall is a safety campaign filed by the manufacturer or ordered by NHTSA, with a defined defect and remedy. A complaint is a report an owner sent to NHTSA; it is not verified, but patterns of complaints are what trigger NHTSA investigations and, eventually, recalls.
Other Audi models
- A42,895 complaints
- A61,658 complaints
- Q51,342 complaints
- Q71,047 complaints
- A3731 complaints
- A5325 complaints
- TT319 complaints
- A4 Allroad252 complaints
Source: NHTSA recall and complaint databases and EPA fuel economy data, October 2026. Complaint counts are owner reports to NHTSA, not verified defects. Recall counts are safety campaigns that list this model year; whether a particular car was already repaired depends on its VIN. How this data is compiled.