AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2015 Audi S4
Overall rating NHTSA-grounded
Above average
Estimated 5-year repair + maintenance cost: $5,000–$8,500
The 2015 Audi S4 demonstrates excellent reliability with few complaints and only one recall related to airbag deployment algorithms. These issues are not widespread and indicate an overall dependable vehicle.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| airbag system | 50,000–80,000 miles | $1,000–$3,000 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- oil and filter changes
- brake fluid replacement
- spark plug replacement
- transmission fluid change
- coolant flush
- tire rotation and balance
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- airbag warning light
- unusual engine noises
- difficult gear shifts
Generated by gpt-4o on 8/18/2026. Cost ranges are conservative estimates that account for typical regional variation.