Total Complaints
6 filings
TOYOTA MIRAI · model year
6 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2017TOYOTAMIRAI carries 6 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 3 injuries, and 0 fatalities. For crash performance, NHTSA's New Car Assessment Program gave this cohort an overall Not Rated/5 rating, with Not Rated/5 front crash, Not Rated/5 side crash, and Not Rated/5 rollover scores derived from standardized barrier and dynamic tests.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2017 MIRAI is seat belts with 1 filings, followed by visibility/wiper (1) and fuel/propulsion system (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 51 investigation files overlapping the 2017 MIRAI, and 1 remain open. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
6 filings
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| SEAT BELTS | 1 |
| VISIBILITY/WIPER | 1 |
| FUEL/PROPULSION SYSTEM | 1 |
| SERVICE BRAKES | 1 |
| FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING | 1 |
| FORWARD COLLISION AVOIDANCE: WARNINGS | 1 |
The automatic braking system will lock up when there is nothing in front of the car. It will not give a warning like it supposed to. I have gotten whiplash and Iâve hurt my back several times due to this incident. It has also caused major anxiety when driving the car. Itâs almost caused an accident several times. The dealership keeps telling me that nothings wrong however the issue keeps happening. Nobodyâs fixing it. A specialist has been checking it out and they also were not able to find anything however the issue is still happening. There have been no warning signs or messages when the brakes lock up for no reason.
The automatic braking system will lock up when there is nothing in front of the car. It will not give a warning like it supposed to. I have gotten whiplash and Iâve hurt my back several times due to this incident. It has also caused major anxiety when driving the car. Itâs almost caused an accident several times. The dealership keeps telling me that nothings wrong however the issue keeps happening. Nobodyâs fixing it. A specialist has been checking it out and they also were not able to find anything however the issue is still happening. There have been no warning signs or messages when the brakes lock up for no reason.
The automatic braking system will lock up when there is nothing in front of the car. It will not give a warning like it supposed to. I have gotten whiplash and Iâve hurt my back several times due to this incident. It has also caused major anxiety when driving the car. Itâs almost caused an accident several times. The dealership keeps telling me that nothings wrong however the issue keeps happening. Nobodyâs fixing it. A specialist has been checking it out and they also were not able to find anything however the issue is still happening. There have been no warning signs or messages when the brakes lock up for no reason.
UNTIL TWO (2) DAYS AGO, I WAS THE HAPPY OWNER OF A 2017 TOYOTA MIRAI (VIN [XXX]). AT THE TIME OF MY INCIDENT, THE CAR HAD APPROXIMATELY 19,700 MILES ON THE ODOMETER. ON FRIDAY 24 AUGUST 2018 AT APPROXIMATELY 1615 (4:15 PM), I WAS DRIVING MY WIFE TO THE CLEANERS. I WAS ON ALMADEN EXPRESSWAY JUST SOUTH OF THE CAMDEN INTERSECTION IN A SOUTHERLY DIRECTION. SUDDENLY AND WITHOUT WARNING, THE CAR LOST POWER. THE CAR MONITOR SCREEN INSTRUCTED ME TO PULL OFF AS SOON AS POSSIBLE AND TO CONTACT MY CAR DEALER. I WAS INFORMED THAT I HAD AN FC FAILURE. AFTER THE CAR WAS TOWED TO THE DEALER, I WAS INFORMED BY THE DEALER THAT A SMALL ROCK HAD COMPLETELY PASSED THROUGH THE RADIATOR. THE TOYOTA MIRAI IS A HYDROGEN FUEL CELL VEHICLE. THERE IS NO INTERNAL COMBUSTION ENGINE. HYDROGEN FUEL FEEDS A FUEL CELL WHICH COMBINES THE HYDROGEN WITH FREE OXYGEN TO MAKE ELECTRICITY. THIS ELECTRICITY THEN POWERS TWO MOTORS AND/OR THE BATTERY. THE FUEL CELL REQUIRES A RADIATOR FOR COOLING. THIS RADI
Mileage: 19,700
TL* THE CONTACT OWNS A 2017 TOYOTA MURAI. WHILE DRIVING AT ANY SPEED, THE DASHBOARD REFLECTED ON THE SIDE VIEW MIRRORS, WHICH MADE IT DIFFICULT TO SEE. THE DEALER (SAN FRANCISCO TOYOTA IN SAN FRANCISCO, CA, 415-559-1981) WAS UNABLE TO DIAGNOSE THE FAILURE AND STATED THAT THE FAILURE WOULD BE REPORTED TO THE MANUFACTURER. THE MANUFACTURER WAS AWARE OF THE FAILURE, BUT DID NOT RETURN THE CALL, AS PROMISED. THE FAILURE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 1,000. THE VIN WAS NOT PROVIDED.....UPDATED 12/11/17 *BF *TT
Mileage: 1,000
THE CHILD SEAT LATCHES FOR CAR SEATS ARE NOT VISIBLE AND PRACTICALLY IMPOSSIBLE TO USE. BECAUSE OF THE DESIGN AND MATERIAL OF THE SEAT, IT TAKES A LOT OF STRENGTH AND EFFORT TO PROPERLY FIND THE LATCHES AND CONNECT THEM TO CAR SEATS. MY WIFE HAS TRIED SEVERAL TIMES TO CONNECT OUR CAR SEATS TO THE LATCH SYSTEM. IT DOESN'T MATTER WHICH CAR SEAT SHE TRIES IT WITH, SHE IS UNABLE TO CONNECT THE LATCH BECAUSE OF THE WAY THE SEAT IS DESIGNED AND THE AMOUNT OF STRENGTH YOU NEED TO HAVE BECAUSE OF THE WAY YOU HAVE TO CONNECT THE CAR SEATS. ON MOST CARS, I CAN CONNECT A CAR SEAT IN UNDER 5 MINUTES TO THE LATCHES. SOME CARS IN A MINUTE OR LESS. WITH THE MIRAI, IT TAKES ME 5-10 MINUTES TO GET THIS INSTALLED. THE LATCHES WERE MADE MANDATORY TO ASSIST PEOPLE WITH EASE OF CAR SEAT INSTALLATION BUT THE DESIGN OF THE MIRAI HAS MADE IT NEARLY IMPOSSIBLE AND IMPOSSIBLE FOR PEOPLE WHO ARE NOT STRONG ENOUGH TO MANUVER THE SEAT AND JAM THE CAR SEAT CLIPS THOUGH THE SEAT BOTTOM.
Mileage: 100
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.