AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2018 Bmw M5
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $18,000–$25,000
The 2018 BMW M5 has an average reliability rating. Key issues include potential fuel system and software-related concerns, as highlighted by NHTSA recalls. Owners have also reported miscellaneous problems, but the vehicle's performance is generally reliable.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| fuel gauge | 30,000–50,000 miles | $300–$600 | common |
| fuel pump | 40,000–70,000 miles | $800–$1,500 | occasional |
| camera system | 25,000–55,000 miles | $200–$500 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- oil change every 10,000 miles
- replace brake fluid every 2 years
- replace air filters every 30,000 miles
- inspect suspension annually
- coolant flush every 4 years
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- inaccurate fuel readings
- engine stalling issues
- camera display errors
Generated by gpt-4o on 6/4/2026. Cost ranges are conservative estimates that account for typical regional variation.