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 where on file — then open the year you're shopping for its AI reliability outlook where NHTSA has enough data.
Audi A4 problems by model year
75 recall entries across 24 model years and 2,882 owner complaints across 31 model years on file, sourced from the federal NHTSA database. We couldn't confirm the NHTSA recall list for the remaining 7 model years — check the VIN at nhtsa.gov/recalls.
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 bags514 complaints
- electrical system465 complaints
- exterior lighting365 complaints
- service brakes, hydraulic305 complaints
- engine247 complaints
- engine and engine cooling227 complaints
- power train201 complaints
- unknown or other156 complaints