AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2021 Bmw M440i
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $8,000–$12,000
The 2021 BMW M440i has an average reliability rating, with some recalls related to seat belts and airbags, and a low number of owner complaints. Most issues are not widespread, but the vehicle has multiple recalls that may affect cost of ownership.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| Battery system | 20,000–40,000 miles | $200–$400 | common |
| Seat belts | 30,000–50,000 miles | $150–$300 | occasional |
| Airbag | 60,000–80,000 miles | $400–$800 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes
- Tire rotations
- Brake fluid replacement
- Coolant system service
- Air filter replacement
- Spark plug replacement
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Unusual battery discharge
- Airbag warning light
- Seat belt not retracting properly
- Unexpected error codes
- Inconsistent braking performance
Generated by gpt-4o on 8/23/2026. Cost ranges are conservative estimates that account for typical regional variation.