AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2009 Audi A4
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $10,000–$15,000
The 2009 Audi A4 has issues with the airbag system that could lead to expensive repairs. Owner complaints suggest additional reliability concerns beyond airbags, affecting long-term costs.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| airbag system | 50,000–75,000 miles | $1,000–$1,500 | very common |
| engine oil consumption | 60,000–90,000 miles | $500–$1,200 | common |
| timing chain tensioner | 70,000–100,000 miles | $1,500–$2,500 | common |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes every 5,000 miles
- Brake fluid replacement every 2 years
- Timing belt replacement around 80,000 miles
- Coolant system flush every 3 years
- Transmission fluid check every 40,000 miles
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Check engine light constantly on
- Unusual engine noises
- Airbag warning light
- Frequent need for oil top-up
Generated by gpt-4o on 6/7/2026. Cost ranges are conservative estimates that account for typical regional variation.