AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2018 Audi S6
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $12,000–$17,000
The 2018 Audi S6 is rated average due to a notable recall affecting the airbag system, though owner complaints are scarce. Primary maintenance concerns include the steering and electrical systems.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| Passenger Occupant Sensing Mat | 20,000–60,000 miles | $700–$1,200 | common |
| Steering | 50,000–80,000 miles | $800–$1,500 | occasional |
| Electrical System | 40,000–70,000 miles | $200–$600 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter change
- Brake fluid replacement
- Cabin air filter replacement
- Tire rotation and alignment
- Transmission fluid service
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Airbag warning light
- Steering stiffness
- Unusual electrical system noises
- Dim dashboard lights
Generated by gpt-4o on 8/24/2026. Cost ranges are conservative estimates that account for typical regional variation.