Audi S4 problems
Light NHTSA footprint — 2 owner complaints. Either a clean record or thin data; we'll show what's there.
Limited NHTSA data — only 2 complaints on file. The score reflects what's reported, but a small sample skews easily.
Only 2 NHTSA complaints on file — too few for a confident reliability call. Could be a clean record or just thin data.
Our read of the federal NHTSA complaint and recall record for this exact year and model — not a substitute for a pre-purchase inspection. How we score.
What owners are saying recent NHTSA-filed complaints · verbatim
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…
Common questions
Is the 2021 Audi S4 reliable?
Limited NHTSA data. Only 2 owner complaints have been filed for the 2021 Audi S4, which is not enough for a meaningful reliability score. Active recalls (if any) are listed on this page and remain authoritative — those are verified defects regardless of complaint volume. For a confident reliability read we look for at least 10 owner complaints in the federal database.
Should you avoid the 2021 Audi S4?
Only 2 NHTSA complaints on file — too few for a confident reliability call. Could be a clean record or just thin data. We don't issue a buy/avoid verdict on the 2021 Audi S4 without a meaningful complaint sample — doing so off a handful of filings would be guesswork.
What's the most common problem on the 2021 Audi S4?
No problem area has crossed our reporting threshold yet, which is a good sign for this vehicle.
What's the most expensive thing that goes wrong?
Major repair items haven't been flagged often enough on this vehicle to single one out.
How do I check if my Audi S4 has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2021 Audi S4?
Hard to say from NHTSA data alone with only 2 complaints on file. A quality service contract runs $1,800–3,500 over 3 years. The decision comes down to your specific situation: vehicle cost, miles on it, how long you plan to keep it, and whether you can absorb a $3K–$8K repair without straining cashflow. With limited public data on this vehicle, lean on the recall list above and check owner forums before committing.