Reliability & cost of ownership
Audi S4 Reliability & Common Problems
How reliable is the Audi S4? Compare every model year side by side — NHTSA recalls, owner complaints, and crash-test stars where on file — then open the year you're shopping for its AI reliability outlook where NHTSA has enough data.
Audi S4 problems by model year
34 recall entries and 561 owner complaints on file across 23 model years, sourced from the federal NHTSA database.
Most-complained-about components
Owner complaints filed with NHTSA against the Audi S4, grouped by the component each complaint names — the fastest read on where this model gives trouble.
- electrical system150 complaints
- power train103 complaints
- exterior lighting65 complaints
- tires49 complaints
- service brakes, hydraulic45 complaints
- engine and engine cooling42 complaints
- steering36 complaints
- air bags33 complaints