Looking for Toyota Mirai repair in Phoenix? We work on Toyota vehicles every day and cover the Mirai across model years 2016 to 2027, with honest diagnostics and quotes you approve before work begins.
To help Mirai owners know what to watch for, we reviewed public records from the National Highway Traffic Safety Administration (NHTSA). For these model years NHTSA has 30 owner complaints on file for the Mirai and 4 safety recall campaigns. The most-reported problem areas are fuel/propulsion system (10), forward collision avoidance (10), vehicle speed control (6).
Most-Reported Toyota Mirai Problems
These problem areas come up most often in NHTSA owner complaints for the Mirai (all model years combined). Complaint counts reflect reports filed, not the share of vehicles affected, so popular and older models naturally have more.
| Problem area (NHTSA component) | Complaints | Share | |
|---|---|---|---|
| Fuel/Propulsion System | 10 | 33% | |
| Forward Collision Avoidance | 10 | 33% | |
| Vehicle Speed Control | 6 | 20% | |
| Electrical System | 4 | 13% | |
| Service Brakes | 3 | 10% | |
| Engine | 3 | 10% | |
| Air Bags | 2 | 6% | |
| Power Train | 2 | 6% |
Fuel/Propulsion System
10 of the 30 complaints (33%) mention the fuel system. Fuel system problems can cause stalling, hard starts and poor mileage. We test fuel delivery and related sensors to find the real cause. See our no-start diagnostics and check engine light diagnostics pages.
Forward Collision Avoidance
10 of the 30 complaints (33%) mention driver-assistance and stability systems. Driver-assistance and stability systems rely on sensors and software. We scan for stored codes and diagnose sensor and wiring faults. See our check engine light diagnostics page.
Vehicle Speed Control
6 of the 30 complaints (20%) mention vehicle speed control (throttle and cruise control). Speed control complaints involve the throttle, cruise control and related sensors. We scan for stored codes and test the throttle system and sensors to find the actual cause instead of guessing. See our check engine light diagnostics and auto repair pages.
Toyota Mirai Complaints by Model Year
The Mirai model years with the most NHTSA complaints on file are 2022, 2023, 2017. Older model years have had more time to collect reports, so use this table as a guide for what to inspect, not as a verdict on any one vehicle.
| Model year | Complaints on file | |
|---|---|---|
| 2016 | 2 | |
| 2017 | 4 | |
| 2018 | 2 | |
| 2019 | 4 | |
| 2020 | 1 | |
| 2021 | 1 | |
| 2022 | 10 | |
| 2023 | 6 |
Toyota Mirai Check Engine Codes
NHTSA owner complaints rarely cite specific trouble codes for the Mirai, so we do not have a model-specific ranking to show. These are the check engine codes we see most often on vehicles in Phoenix heat, and any of them can show up on a Toyota.
| Code | What it means |
|---|---|
| P0420 | Catalyst efficiency below threshold (bank 1) Often a worn catalytic converter, but failing oxygen sensors or exhaust leaks can set it too. Can cause an emissions test failure. |
| P0300 | Random or multiple cylinder misfire Worn spark plugs, failing ignition coils, fuel or vacuum problems. Do not ignore a flashing check engine light. |
| P0171 | System too lean (bank 1) Often a vacuum leak, dirty MAF sensor, weak fuel delivery or a failing oxygen sensor. |
| P0455 | EVAP system large leak Missing or loose gas cap, or a disconnected or cracked vapor hose. |
| P0128 | Coolant temperature below thermostat regulating temperature Usually a thermostat stuck open. Fix it to restore efficiency and cabin heat. |
| P0442 | EVAP system small leak Loose or worn gas cap, cracked hose or purge or vent valve. |
| P0301 | Cylinder 1 misfire Commonly a bad spark plug or ignition coil on that cylinder. |
| P0401 | EGR flow insufficient Clogged EGR passages or a stuck EGR valve. |
Got a check engine light on your Mirai? A code is a clue, not a diagnosis, so we scan it and test the system before replacing anything. See our check engine light diagnostics.
Toyota Mirai Safety Recalls
NHTSA lists 4 recall campaigns for the Mirai in these model years, most often involving back over prevention, electronic stability control (esc), electrical system. Recalls are repaired by the manufacturer at no charge to you, but each applies only to certain vehicles. Look up your VIN at nhtsa.gov/recalls.
- 2026 recall, Electrical System (campaign 26V341000): Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2025 Lexus UX Hybrid, 2024 Lexus GX, Toyota Mirai, and 2024-2025 Toyota Land Cruiser Hybrid vehicles.
- 2025 recall, Back Over Prevention (campaign 25V744000): Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2022-2026 Toyota, Lexus, and Subaru Solterra vehicles equipped with a Panoramic View Monitor (PVM) system. Please see the recall report for a complete list of models.
- 2024 recall, Back Over Prevention (campaign 24V124000): Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2023 Mirai, Lexus LS500, LS500H, 2023-2024 Lexus ES250, ES300H, ES350, 2024 Lexus LC500, and LC500H vehicles equipped with a Panoramic View Monitor (PVM) system.
- 2022 recall, Electronic Stability Control (esc) (campaign 22V239000): Toyota Engineering & Manufacturing (Toyota) is recalling certain 2022 Lexus LX 600, Lexus NX 350h, Lexus NX 450h+, Toytoa RAV4 Hybrid, 2021-2022 Lexus LS 500h, Toyota Mirai, RAV4 PRIME, Sienna, Venza, and 2020-2022 Toyota Highlander Hybrid...
Serious Incident Reports
Of the NHTSA complaints on file for the Mirai, 4 involved a crash, 3 reported injuries. These numbers are drawn from self-reported complaints and are not verified findings. If your vehicle has an open recall, get it repaired promptly.
Keeping a Toyota Mirai Reliable in Phoenix
Arizona heat is the hardest test a Toyota will face. Batteries, belts, hoses, tires and engine oil all wear faster here, and a Mirai that spends its life in stop-and-go Valley traffic needs maintenance earlier than the owner's manual's normal schedule suggests.
Our recommendation for Mirai owners: follow the severe-service schedule, test the battery before every summer, inspect brakes and tires twice a year, and have any warning light diagnosed instead of ignored. If you are shopping for a used Toyota Mirai, a pre-purchase inspection shows what the paperwork does not.
Toyota Mirai Services at EZ Swap LLC
Get the details on our Phoenix Toyota Mirai repair service, or choose a service below.
Toyota Mirai FAQ
What are the most common problems with the Toyota Mirai?
Based on NHTSA owner complaints, the most-reported problem areas for the Toyota Mirai are fuel/propulsion system (10), forward collision avoidance (10), vehicle speed control (6). Complaint counts reflect reports filed, not the share of vehicles affected.
Which Mirai model years have the most complaints?
The Mirai model years with the most NHTSA complaints on file are 2022, 2023, 2017. Older years have had longer to collect reports, so inspect any specific vehicle before buying.
What check engine codes are common on the Toyota Mirai?
NHTSA complaints rarely cite specific codes for the Toyota Mirai. On Phoenix vehicles in general, we see P0420, P0300 misfires, P0171 lean conditions and EVAP leaks such as P0455 and P0442 most often. Bring yours in and we will scan and test it.
Does the Toyota Mirai have any safety recalls?
NHTSA lists 4 recall campaigns for the Toyota Mirai across model years 2016 to 2027. Each recall applies only to certain vehicles, so enter your VIN at nhtsa.gov/recalls to see if yours is affected.
Do you repair the Toyota Mirai in Phoenix?
Yes. EZ Swap LLC repairs and maintains Toyota vehicles including the Mirai, at 9050 N 9th St in Phoenix. Call or text (602) 246-9063 for an appointment.
Is a pre-purchase inspection worth it for a used Toyota Mirai?
Yes. An inspection checks the engine, transmission, brakes, suspension, A/C and electrical system, and scans for stored codes, so you know the real condition before you buy.
How often should I service my Toyota Mirai in Phoenix?
Follow the severe-service schedule in your owner's manual, since heat and stop-and-go driving count as severe use. Test the battery before summer and inspect brakes and tires regularly.
More Toyota Models We Service
Source: public complaint and recall records from the National Highway Traffic Safety Administration (nhtsa.gov). Counts reflect reports filed and do not predict the condition of any individual vehicle.