Reliability & cost of ownership
Audi A4 Reliability & Common Problems
How reliable is the Audi A4? Compare every model year side by side — NHTSA recalls, owner complaints, and crash-test stars — then open the year you're shopping for a full reliability and repair-cost forecast.
Audi A4 problems by model year
69 recall entries and 2852 owner complaints on file across 30 model years, sourced from the federal NHTSA database.
Most-complained-about components
Owner complaints filed with NHTSA against the Audi A4, grouped by the component each complaint names — the fastest read on where this model gives trouble.
- air bags510 complaints
- electrical system452 complaints
- exterior lighting365 complaints
- service brakes352 complaints
- hydraulic303 complaints
- engine242 complaints
- engine and engine cooling227 complaints
- power train200 complaints