2023 TOYOTA Mirai Problems

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Complaints Reported

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Complaints by Component

POWER TRAIN,ELECTRICAL SYSTEM,ENGINE

1 complaint

On January 26, 2026, at approximately 6:50 AM, I experienced a serious safety-related malfunction in my 2023 Toyota Mirai while entering traffic on Inglewood Avenue in Lawndale, California. I was pulling out of a parking lot into active traffic at low speed. At the moment I was entering the roadway, the vehicle suddenly lost propulsion/power without warning. Simultaneously, the vehicle’s infotainment/center display went completely black, consistent with a system reboot or electrical interruption. After a brief pause, the display rebooted and turned back on, and immediately afterward the vehicle unexpectedly surged forward. At the time of the power loss, my foot was lightly on the accelerator pedal as I was merging. When the vehicle’s systems reinitialized, the car applied power consistent with the pedal position, resulting in a sudden forward movement. The accelerator was not fully depressed, and this was not a full-throttle event, but the surge occurred without warning while the vehicle was in active traffic. The sequence of events — loss of propulsion, apparent electronic system reset, followed by unintended propulsion upon re-engagement — created a hazardous situation while entering traffic and raises serious concerns about the vehicle’s electronic control and power management systems. The vehicle’s behavior was unpredictable at a critical moment when controlled acceleration was required, which could have resulted in a collision or injury. There were no warning lights or messages prior to the event. I am reporting this incident because it appears to involve a safety defect related to loss of propulsion and unintended surge while in motion. I am scheduling a service inspection and will request a full diagnostic scan, including history and freeze-frame data from all control modules. Vehicle information: Year/Make/Model: 2023 Toyota Mirai Mileage at incident: approximately 47,033 miles Location: Lawndale, California Speed: Low speed while entering traffic

Jan 26, 2026

VEHICLE SPEED CONTROL,FORWARD COLLISION AVOIDANCE

1 complaint

See attached document for complaint.

Oct 08, 2025

POWER TRAIN,FUEL/PROPULSION SYSTEM

1 complaint

Summary of Issue: I am the owner of a Toyota Mirai that suffered a sudden loss of power due to contaminated hydrogen fuel. The incident rendered the vehicle undrivable and raised serious safety concerns, as loss of propulsion in a fuel-cell vehicle can occur without warning while in motion. The vehicle was taken to Toyota of [XXX] for diagnosis and repair, where Toyota confirmed the presence of contaminated fuel. Toyota’s Stance: According to Toyota, the contamination issue was addressed by flushing the contaminated hydrogen from the system and refueling the vehicle. Toyota has stated that this process has restored power and that the company does not accept responsibility for any damage caused by the contamination. They have not disclosed any data on the type or level of contamination found, nor have they provided a written service report detailing inspection results or long-term corrective actions. Owner Concern: Independent research and fuel-cell engineering references indicate that contaminants such as sulfur compounds, carbon monoxide, or heavy metals can permanently degrade or “poison” the fuel-cell stack. Flushing alone cannot reverse such chemical or structural damage. As a result, there is a risk of future performance loss or total stack failure. Without transparency from Toyota regarding contaminant analysis or verification of system integrity, I cannot consider this vehicle safe or reliable to drive. Request for Resolution: I am requesting that Toyota: Provide complete written documentation of the contaminant analysis and testing performed on my vehicle. Disclose the long-term plan for ensuring the fuel-cell stack and related components have not been compromised. Offer either a full buyback/repurchase under applicable consumer protection laws or a complete fuel-cell stack replacement verified by engineering inspection. Until Toyota provides a documented, technically valid repair or an official buyback offer, this issue remains unresolved INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Oct 07, 2025

UNKNOWN OR OTHER

1 complaint

The warning that is supposed to appear every time the car is started that the car will auto shut off after one hour of idling never once appeared. As a result, my husband did not know the auto shut off feature existed on his car. He fell asleep in his car on a hot summer day and when the car auto shut off after an hour, he died of heatstroke. The lack of a warning coupled with the car auto shutting off after an hour was reproduced and confirmed by an independent service center. The car has not been inspected by anyone else. There were no warnings, messages, or other problems prior to my husband’s death. He was not informed of the auto shut off feature at the dealership at the time of purchase and the dashboard warning never once appeared to alert him such a feature existed. He thought it was safe to sleep in his running car. The auto shut off feature does not work properly as there was no warning on the dashboard and does not safeguard against people or animals being in the car at the one hour mark. Toyota needs to know this is a deadly feature and make some serious changes.

Sep 06, 2024

FUEL/PROPULSION SYSTEM

1 complaint

The vehicle has an advertised driving range by Toyota of 402 miles , depending on that information as true I attempted a trip about that range . During this trip and all other driving times I have never got more then 260 miles of range .

Jan 10, 2024

4.7/5.0

50 reviews

Where to Find VIN for Problems Check

To check for problems and complaints on your 2023 TOYOTA Mirai, you'll need the VIN number. Find your VIN in one of these 4 common locations.

Where to Find VIN Number on 2023 TOYOTA Mirai for Problems Lookup - Dashboard, Door Jamb, Engine Bay, Documents

Understanding VIN Structure for Problem Reports

Each character in your 2023 TOYOTA Mirai 17-digit VIN helps identify specific complaints and problems affecting your vehicle model.

2023 TOYOTA Mirai VIN Structure for Complaint Verification - WMI, VDS, Check Digit, Model Year, Plant Code

How to Check 2023 TOYOTA Mirai Problems in 3 Steps

Locate Your VIN

Find the 17-character VIN on your 2023 TOYOTA Mirai dashboard (visible through windshield), door jamb, engine bay, or vehicle documents.

Review by Component

Browse owner-reported complaints organized by vehicle component (engine, transmission, brakes, electrical) to identify common issues and problem patterns for this model year.

Check Safety Issues

Review crash and fire incidents for each component to assess safety concerns. Contact your TOYOTA dealer or report problems to NHTSA at SaferCar.gov.

Frequently Asked Questions

How many problems does the 2023 TOYOTA Mirai have?

The 2023 TOYOTA Mirai currently has 5 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.

What are the most common problems with 2023 TOYOTA Mirai?

The most common problems reported for the 2023 TOYOTA Mirai are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.

Where does this 2023 TOYOTA Mirai problem data come from?

All problem and complaint data for the 2023 TOYOTA Mirai comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.

How do I report problems with my 2023 TOYOTA Mirai?

You can report safety problems with your 2023 TOYOTA Mirai directly to NHTSA at SaferCar.gov or call 1-888-327-4236. Your complaint helps identify patterns and may lead to recalls or investigations.

Where can I find my VIN to check problems?

Your 2023 TOYOTA Mirai VIN is located in 4 places: (1) Dashboard near windshield on driver's side, (2) Driver's door jamb sticker, (3) Engine bay, (4) Vehicle registration and insurance documents.

Is the 2023 TOYOTA Mirai reliable?

Reliability can be assessed by reviewing the number and severity of owner complaints for the 2023 TOYOTA Mirai. Check complaints by component, crash reports, and fire incidents above to evaluate potential issues and problem patterns.