FaultScore

Toyota Mirai problems

Owners have filed 52 complaints about the Toyota Mirai with NHTSA across model years 2016 to 2023. More of them are about the driver assist & collision avoidance than anything else.

Every Toyota Mirai year, graded

The grade compares each year against the rest of this model's own run — never against another car. Click any bar or row to open that year's report.

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded
Year Grade Complaints Crashes Fires Median miles Most reported
2023 12 0 0 Fuel & Propulsion
2022 19 4 0 Driver Assist & Collision Avoidance
2021 1 0 0 Fuel & Propulsion
2020 1 1 0 Acceleration & Cruise Control
2019 7 3 0 Airbags
2018 4 0 0 Brakes
2017 6 0 0 Driver Assist & Collision Avoidance
2016 2 0 0 Acceleration & Cruise Control

What breaks on a Toyota Mirai

Across every model year on file. Follow a row for that part's complaints and the year it was worst.

Driver Assist & Collision Avoidance 16 30.8%

Worst in 2022

Fuel & Propulsion 10 19.2%

Worst in 2023

Acceleration & Cruise Control 6 11.5%

Worst in 2022

Electrical System 4 7.7%

Worst in 2022

Engine & Cooling 3 5.8%

Worst in 2022

Brakes 3 5.8%

Worst in 2017

Other & Unspecified 3 5.8%

Worst in 2019

Transmission & Drivetrain 2 3.8%

Worst in 2023

Airbags 2 3.8%

Worst in 2019

Steering 1 1.9%

Worst in 2019

Windows, Mirrors & Wipers 1 1.9%

Worst in 2017

Seat Belts 1 1.9%

Worst in 2017

Complaints filed over time

Every complaint about every Toyota Mirai, by the month it reached NHTSA.

May 2017 peak 8 Apr 2026

Compare the Toyota Mirai

Side by side on complaint history. Remember that raw totals track how many were sold as much as how good they were.