AI Damage2017 Toyota Mirai: common problems
Owners of the 2017 Toyota Mirai filed 4 complaints with NHTSA, most often about service brakes and forward collision avoidance. The maker issued 95 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 4
- Technical service bulletins (TSB)
- 95
What fails most often
- 1 Service brakes 25% of all complaints
- 2 Forward collision avoidance 25% of all complaints
- 3 Visibility 25% of all complaints
- 4 Fuel/propulsion system 25% of all complaints
- 5 Seat belts 25% of all complaints
- Service brakes: 1 complaints (25% of all); manufacturer bulletins for this component: 4.
- Forward collision avoidance: 1 complaints (25% of all); manufacturer bulletins for this component: 1.
- Visibility: 1 complaints (25% of all); manufacturer bulletins for this component: 1.
- Fuel/propulsion system: 1 complaints (25% of all).
- Seat belts: 1 complaints (25% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- petrol
- CVT
Drive: FWD
Symptoms owners describe
How many of the 4 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Service brakes | 1 | 0 | 4 |
| Forward collision avoidance | 1 | 0 | 1 |
| Visibility | 1 | 0 | 1 |
| Fuel/propulsion system | 1 | 0 | 0 |
| Seat belts | 1 | 0 | 0 |
| Equipment | 0 | 0 | 41 |
| Structure | 0 | 0 | 27 |
| Electrical system | 0 | 0 | 23 |
| Backover prevention | 0 | 0 | 5 |
| Engine and cooling | 0 | 0 | 5 |
| Air bags | 0 | 0 | 4 |
| Fuel system | 0 | 0 | 2 |
| Seats | 0 | 0 | 2 |
| Tires | 0 | 0 | 2 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
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.
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.
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, [phone]) was unable to diagnose the failure and stated that the failure would be reported to the manufacturer.
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.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 15,521 of 36,656 model years in the NHTSA data (top 42% most complained about).
On average one model year of the Mirai has 3 complaints (11 years in the data). This year has 4, above average.
What to check before buying
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Forward collision avoidance. Radar and camera: calibration after bumper or windshield replacement.
- Visibility. Wipers, mirrors, defrosters, cracked glass.
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Some 2005 – 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a…
Some 2005 – 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition…
- The air conditioning dye injection tool kit has been developed to aid in identifying the location of air…
The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and…
- The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix…
The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and…
- To prevent brake rotor rust from forming during transportation and storage, wheel film will be used…
To prevent brake rotor rust from forming during transportation and storage, wheel film will be used instead of a cardboard type of anti-rust cover. The purpose of the wheel film is to shield the disc brake rotor from…
- Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical…
Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical impurities in the atmosphere. If these acidic compounds settle on an exposed vehicle, especially the horizontal…
- Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal…
Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal painted surfaces. This material protects from acid rain, environmental fallout, and rail contamination. Follow…
- Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad…
Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad tracks, train wheels, exposure to heavy machinery facilities, grinding, welding, etc. This type of contamination can…
- Some 2005 – 2024 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a…
Some 2005 – 2024 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition…
- Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal…
Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal painted surfaces. This material protects from acid rain, environmental fallout, and rail contamination.
- This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life…
This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the Toyota Complete Maintenance Care (TCMC)…
- TSB
The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. Follow the procedures outlined in this service bulletin to aid in locating…
- TSB
Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN plates (the metal plate riveted to dashboard) (see Figure 1) for most 1979 ? 2023 model year vehicles may be…
NHTSA lists 95 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2017 Toyota Mirai?
Owner complaints to NHTSA most often mention: service brakes, forward collision avoidance, visibility. Total complaints: 4. The most frequent symptoms in complaint texts: loss of power / limp mode (25%), infotainment or screen glitches (25%).
How many service bulletins (TSB) were issued for the 2017 Toyota Mirai?
NHTSA lists 95 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2017 Toyota Mirai from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2017 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.