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Toyota · Known Issues

2017 Toyota Mirai Problems: 4 Known Issues

2017 model year · 1,750+ owner reports · Updated August 2026

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Issue summary

According to Au7o's analysis of 1,750+ owner reports, the 2017 Toyota Mirai has 4 documented known issues, with 2 rated critical. The most serious are Hydrogen Refueling Station Availability and Cost Crisis ($0-$500 repair) and Fuel Cell System Warning and Sudden Power Loss ($0-$8,000 repair). The most commonly reported issue is Hydrogen Refueling Station Availability and Cost Crisis with 800 owner reports. DIY maintenance guides at au7o.io.

In This Article

  • Mirai Fuel System4
  • Recalls4
  • FAQ
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In This Article

  • Fuel System4
  • Recalls4
  • FAQ

All 4 Known Issues

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ALL YEARS2025202420232022202120202019201820172016
Community reported
800 owners

On the 2016-2024 Toyota Mirai, mirai owners face severe difficulties refueling due to the extremely limited hydrogen infrastructure. As of 2024, only approximately 54 hydrogen stations exist in the U.S., almost all in California, with many frequently offline for maintenance. Hydrogen fuel costs have increased roughly 200%, from $13/kg in 2022 to approximately $36/kg in 2024. The class-action lawsuit alleges Toyota marketed the Mirai despite knowing the refueling infrastructure was inadequate. This has caused severe depreciation — the Mirai retains only about 19.4% of its value after five years.

Common Symptoms

  • Unable to find operational hydrogen refueling station
  • Nearest hydrogen station offline for extended periods
  • Fuel costs significantly higher than expected
  • Actual driving range 100+ miles less than advertised
  • Vehicle sitting unused due to inability to refuel

How to Fix

Before purchasing, verify that hydrogen stations along your regular routes are operational using the California Fuel Cell Partnership station map. Budget for significantly higher fuel costs than initially advertised. If you are unable to reliably refuel, consult a lemon law attorney about your options. Toyota previously offered $15,000 in free hydrogen fuel with new Mirai purchases — verify your remaining balance. Consider whether your driving needs can be met by the limited station network.

Owner tips & cautions

  • TipUse the California Fuel Cell Partnership app to check station status before driving to refuel — stations go offline frequently.
  • WarningDo not purchase a Mirai unless you live within 15 minutes of a reliable hydrogen station. The infrastructure is not improving.
Typical repair cost:$0 - $500

Research This Issue

Based on 800 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
High Confidence800 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026
Community reported
350 owners

On the 2016-2024 Toyota Mirai, mirai owners report fuel cell system warnings that signal malfunctions in the hydrogen fuel cell stack, resulting in sudden power loss while driving. A class-action lawsuit filed in 2023 alleges Toyota concealed known defects in the fuel cell system that can cause dangerous power losses. The fuel cell system relies on precise hydrogen supply management, and disruptions from leaks, blockages, or hydrogen storage tank issues trigger warnings and reduced performance or complete shutdown.

Common Symptoms

  • Fuel cell system warning light on dashboard
  • Sudden loss of power while driving
  • Reduced power mode / limp mode activation
  • Unusual hissing, clicking, or buzzing from fuel cell area
  • Vibrations while accelerating or at idle

How to Fix

If the fuel cell system warning illuminates, safely pull over and restart the vehicle. Many warnings are caused by software glitches that clear with a restart. For persistent warnings, the dealer must diagnose whether the issue is in the fuel cell stack, power control unit, or hydrogen supply system. Toyota has released software updates that address some fuel cell management issues. Keep all scheduled maintenance current as the fuel cell system requires specific inspections.

Owner tips & cautions

  • TipKeep detailed records of every fuel cell warning — this documentation is important if you need to pursue warranty claims or lemon law.
  • WarningDo not ignore fuel cell warnings — hydrogen leaks are a serious safety concern and require immediate professional inspection.
  • TipCheck if your VIN is covered by Toyota's extended fuel cell warranty or any settlement from the class-action lawsuit.
Typical repair cost:$0 - $8,000

Research This Issue

Based on 350 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
High Confidence350 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026
Community reported
600 owners

On the 2016-2024 Toyota Mirai, owners consistently report the Mirai's actual driving range falls 80-100+ miles short of Toyota's advertised figures (357 miles for Limited, 402 miles for XLE). Factors include hydrogen tank pressure variations at different stations, temperature effects on fuel cell efficiency, and aggressive driving. Gen 1 (2016-2020) models are particularly affected with a smaller tank and older fuel cell technology. This is a major factor in the class-action lawsuit.

Common Symptoms

  • Fuel gauge drops faster than expected
  • Estimated range after refueling is significantly below rated range
  • Range anxiety due to limited refueling options
  • Cold weather causing noticeable range reduction
  • Inconsistent fill levels at different hydrogen stations

How to Fix

Expect roughly 250-300 miles of real-world range rather than the advertised figures. Drive conservatively and use eco mode to maximize range. Plan routes with refueling stops more frequently than the estimated range suggests. In cold weather, expect further range reduction of 10-20%. Gen 2 (2021+) models have improved range but still fall short of advertised numbers.

Owner tips & cautions

  • TipPlan for 250-300 miles of real range, not the advertised 357-402 miles. This prevents being stranded.
  • TipRefuel when you reach half tank rather than waiting — hydrogen station availability can change without notice.
Typical repair cost:$0 - $0

Research This Issue

Based on 600 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
High Confidence600 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2016-2021 Toyota Mirai Hydrogen Fuel Cell, first-generation Mirai (2016-2020) owners report gradual fuel cell stack performance degradation after 50,000-80,000 miles. Symptoms include reduced range, decreased power output, and longer startup times in cold weather. The fuel cell membrane degrades from hydrogen impurities at some stations, thermal cycling, and normal electrochemical wear. Toyota warrants the fuel cell stack for 8 years/100,000 miles.

This issue also affects: Toyota Prius C

Common Symptoms

  • Gradual range decrease over time
  • Reduced acceleration and power
  • Longer startup in cold weather
  • Fuel cell system warning light
  • Noticeable efficiency drop on dashboard

How to Fix

Monitor range and performance regularly. If range drops more than 20% from new, contact Toyota dealer for fuel cell stack diagnostic. The stack may need reconditioning or replacement (covered under warranty for 8 years/100,000 miles). Always refuel at stations with known clean hydrogen supply. Avoid letting the tank run very low, as air intrusion into the fuel system can damage the membrane.

Owner tips & cautions

  • TipTrack your miles-per-kg at every fill. If it drops below 50 miles/kg consistently (Gen 1), start a warranty claim. Toyota has been good about replacing stacks under warranty.
Typical repair cost:$0 - $0

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence
NHTSA Recalls4 recalls

BACK OVER PREVENTION:DISPLAY FUNCTION

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. A software error may cause the rearview camera to freeze or display a blank screen when the vehicle is in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."

Campaign #25V74400030/10/2025

ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

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. The instrument panel cluster combination meter may fail to display certain warnings or indicators. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 101, "Control and Displays" and in addition, for the subject Mirai vehicles, FMVSS 305, "Electric-powered vehicles: Electrolyte Spillage and Electrical Shock Protection."

Campaign #26V34100027/05/2026

BACK OVER PREVENTION:DISPLAY FUNCTION

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Frequently Asked Questions

What are the most common Toyota Mirai problems?

According to Au7o's analysis of 1,750+ owner reports, the 2017 Toyota Mirai has 4 documented issues. The most frequently reported are: Hydrogen Refueling Station Availability and Cost Crisis, Fuel Cell System Warning and Sudden Power Loss, Real-World Range Significantly Below Advertised Figures. Of these, 2 are rated critical and should be addressed promptly.

Is the Toyota Mirai reliable?

The 2017 Toyota Mirai has 4 known issues documented across 1,750+ owner reports. 2 issues are rated critical: Hydrogen Refueling Station Availability and Cost Crisis and Fuel Cell System Warning and Sudden Power Loss. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Toyota Mirai problems?

Repair costs for known Toyota Mirai issues range from $0 to $8,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Hydrogen Refueling Station Availability and Cost Crisis, typically costs $0-$500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2016-2024 Toyota Mirai Hydrogen Refueling Station Availability and Cost Crisis?

Mirai owners face severe difficulties refueling due to the extremely limited hydrogen infrastructure. As of 2024, only approximately 54 hydrogen stations exist in the U.S., almost all in California, with many frequently offline for maintenance. Hydrogen fuel costs have increased… Repairs typically run $0-$500. Severity: high.

What is the 2016-2024 Toyota Mirai Fuel Cell System Warning and Sudden Power Loss?

Mirai owners report fuel cell system warnings that signal malfunctions in the hydrogen fuel cell stack, resulting in sudden power loss while driving. A class-action lawsuit filed in 2023 alleges Toyota concealed known defects in the fuel cell system that can cause dangerous power… Repairs typically run $0-$8,000. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 1,750+ owner reports, NHTSA recalls, TSBs, and automotive forums.

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. Due to incorrect programming of the parking-assist electronic control unit (ECU) software, the rearview camera image may not immediately display within a couple of seconds after the shifter is placed into reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Campaign #24V12400021/02/2024

ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE:SOFTWARE

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 vehicles. The Skid Control ECU software may not turn on the Vehicle Stability Control (VSC) system when the vehicle is restarted after the driver has disabled the VSC system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 126, "Electronic Stability Control Systems."

Campaign #22V23900013/04/2022

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

What is the 2016-2024 Toyota Mirai Real-World Range Significantly Below Advertised Figures?

Owners consistently report the Mirai's actual driving range falls 80-100+ miles short of Toyota's advertised figures (357 miles for Limited, 402 miles for XLE). Factors include hydrogen tank pressure variations at different stations, temperature effects on fuel cell efficiency, a… Repairs typically run $0-$0. Severity: medium.

What is the 2016-2021 Toyota Mirai Fuel Cell Stack Performance Degradation?

First-generation Mirai (2016-2020) owners report gradual fuel cell stack performance degradation after 50,000-80,000 miles. Symptoms include reduced range, decreased power output, and longer startup times in cold weather. The fuel cell membrane degrades from hydrogen impurities a… Repairs typically run $0-$0. Severity: medium.