AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2020 Toyota Mirai
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $4,500–$9,500
The 2020 Toyota Mirai has minimal complaints, with only one related to vehicle speed control. This suggests a generally reliable vehicle but requires monitoring for uncommon faults.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| hydrogen system | 70,000-100,000 miles | $1,500–$3,000 | occasional |
| fuel cell battery | 80,000-120,000 miles | $2,000–$5,000 | rare |
| brake system | 90,000-130,000 miles | $300–$800 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes
- Brake inspections and service
- Coolant system flush
- Hydrogen system inspection
- Tire rotation and balancing
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Unusual engine sounds
- Fluctuating speed control
- Brake pedal softness
- Fuel cell efficiency drop
Generated by gpt-4o on 8/24/2026. Cost ranges are conservative estimates that account for typical regional variation.