2017 Toyota Mirai Owner Complaints

Complaint Summary
The 2017 Toyota Mirai has 6 reported complaints.
- Top issues involve seat belts and visibility/wiper.
Reliability Score
Reliability Score
Based on 6 complaints
Most Frequent Issues
SEAT BELTS
1 16.7%
VISIBILITY/WIPER
1 16.7%
FUEL/PROPULSION SYSTEM
1 16.7%
SERVICE BRAKES
1 16.7%
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
1 16.7%
Quick Insights
The top category is SEAT BELTS, accounting for 16.7% of all complaints.
Owners have reported issues across 6 distinct vehicle systems.
Note: Complaint data reflects owner reports and may not always indicate a verified defect. Compare with Recalls and TSBs for a complete picture.
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What owners keep reporting on the 2017 Toyota Mirai
The 2017 Toyota Mirai has 6 owner complaints in this dataset. SEAT BELTS is the most common complaint category, representing about 17% of the reports shown here.
Most common complaint categories
The top complaint groups for the 2017 Toyota Mirai are SEAT BELTS (1), VISIBILITY/WIPER (1), FUEL/PROPULSION SYSTEM (1).
Are these complaints a serious red flag?
Potentially. 2 complaint reports involve higher-attention systems like brakes, steering, engine, powertrain, fuel, suspension, airbags, or electrical components, which is enough to justify a focused inspection.
What should buyers inspect on a used 2017 Toyota Mirai?
Start with the top complaint systems, compare them against the recall report, then inspect service records for evidence that those same areas were already repaired or monitored.
Detailed Complaint Log
Showing 6 of 6 systems
SEAT BELTS
1 Report17% of totalPreviewing the first 1 complaint summaries.
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.
5/14/2017
VISIBILITY/WIPER
1 Report17% of totalPreviewing the first 1 complaint summaries.
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
10/17/2017
FUEL/PROPULSION SYSTEM
1 Report17% of totalPreviewing the first 1 complaint summaries.
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 RADIATOR IS THE ACHILLES HEEL OF THE MIRAI. IT IS PLACED LOW, IN FRONT, ON THE PASSENGER?S SIDE OF THE VEHICLE. THERE IS NO BUMPER TO PROTECT IT FROM COLLISIONS WITH CURBS. IN MY CASE, THERE IS NO PROTECTION FROM ROCKS AND GRAVEL HITTING THE RADIATOR AND DISABLING THE VEHICLE. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
8/27/2018
SERVICE BRAKES
1 Report17% of totalPreviewing the first 1 complaint summaries.
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.
10/20/2021
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
1 Report17% of totalPreviewing the first 1 complaint summaries.
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.
10/20/2021
FORWARD COLLISION AVOIDANCE: WARNINGS
1 Report17% of totalPreviewing the first 1 complaint summaries.
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.
10/20/2021
Data and Methodology
Scores are derived from NHTSA recalls and owner complaints, normalized by vehicle segment averages.
What are the most common owner complaints for the 2017 Toyota Mirai?
Are complaints about the 2017 Toyota Mirai a serious warning sign?
How should buyers use complaint data for the 2017 Toyota Mirai?
Are complaints about the 2017 Toyota Mirai severe?
Complaint list entries are sourced from owner-submitted NHTSA ODI records.
Toyota Mirai: How should complaint data influence buying decisions?
Carfocal links complaint data directly to recall and maintenance routes for the same model year.
- Complaint entries
- 6
- Top-topic view
- 5 grouped topics shown
- Primary source
- NHTSA ODI owner complaint records
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