AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2015 Audi S8
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $15,000–$20,000
The 2015 Audi S8 suffers from engine and fuel system issues, with recalls for turbocharger lubrication and fuel line leaks. Complaints suggest potential engine problems, affecting long-term reliability.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| turbocharger | 60,000–90,000 miles | $1,500–$3,000 | very common |
| fuel line | 50,000–80,000 miles | $750–$1,500 | common |
| engine seals | 70,000–100,000 miles | $500–$1,200 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil change every 10,000 miles
- Brake fluid every 2 years
- Spark plugs at 60,000 miles
- Transmission service every 50,000 miles
- Coolant flush every 5 years
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Check engine light illumination
- Unusual engine noises
- Strong fuel odor
- Decrease in turbo performance
Generated by gpt-4o on 8/18/2026. Cost ranges are conservative estimates that account for typical regional variation.