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 2877 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 bags514 complaints
- electrical system465 complaints
- exterior lighting365 complaints
- service brakes355 complaints
- hydraulic304 complaints
- engine247 complaints
- engine and engine cooling227 complaints
- power train201 complaints