AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2011 Infiniti M56
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $8,000–$12,000
The 2011 Infiniti M56 faces significant powertrain reliability issues, particularly with the driveshaft, as evidenced by multiple recalls and complaints. Engine and electrical issues further affect reliability.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| driveshaft | 50,000–80,000 miles | $900–$1,500 | very common |
| engine components | 60,000–100,000 miles | $1,200–$3,000 | common |
| electrical system | 70,000–100,000 miles | $300–$600 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes every 5,000 miles
- Brake fluid replacement every 30,000 miles
- Coolant flush every 60,000 miles
- Drive belt inspection every 20,000 miles
- Transmission fluid change every 60,000 miles
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Unusual drivetrain noises
- Persistent engine warning lights
- Flickering dashboard lights
- Reduced vehicle acceleration
Generated by gpt-4o on 8/20/2026. Cost ranges are conservative estimates that account for typical regional variation.