What's Wrong with the 1st Generation (2016–2019) Mirai?

Mirai owners have made 1 complaint about the 2016–2019 model years. Using our PainRank™ system we've ranked it 6th out of 81 Toyota generations in overall reliability, with plenty of interior concerns.

Common 2016-2019 Toyota Mirai Problems

Some of the worst issues 1st generation Mirai owners have to deal with.

  1. Rodents Chew Soy-Coated Wires

    Somewhere in the mid-2000's there was an industry-wide push by automakers to replace plastic and glass-based wiring insulation with a more eco-friendly soy-based coating. It's biodegradable, commendable, and a complete disaster for owners. …

    Continue reading article "Rodents Chew Soy-Coated Wires"

  2. What Are We Missing?

    We know there's more problems than this. Let us know which one you'd like to see us cover next.

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What Owners Complain About

Sometimes it helps just to tally up the complaints and see where the biggest stacks are. Use this information to learn about troublespots or to run for the hills.

Worst Issues

What Breaks the Most

Years to Avoid

1st Generation (2016–2019) Mirai Key Numbers

  1. 1 model year

    Grouping all models by their year can reveal some baddies.

  2. 1 complaint

    Running tally of owner grievances filed to CarComplaints.com.

  3. 6th in reliability

    Overall reliability rank out of 81 eligible generations.

Recent 1st Generation (2016–2019) Mirai News

There's a lot of news out there, but not all of it matters. We try to boil down it to the most important bits about things that actually help you with your car problem. Interested in getting these stories in an email? Signup for free email alerts over at CarComplaints.com.

  2. 2,840 Mirai vehicles will need a software update to fix a problem with their fuel cell system.

    The Mirai can experience a failure of the fuel cell system when a driver goes down a long hill with cruise control engaged and then hits the gas pedal to quickly accelerate. Toyota says the car could quit because the voltage from the fuel cell boost converter can go beyond its limits and stop the fuel cell system.

    The software update should take about 30 minutes to complete, just don't say it's part of a recall. Toyota would prefer to call it a customer satisfaction campaign. 🙄

    keep reading article "Mirai's Fuel Cell System Needs a Software Update"

  3. When Toyota switched away from using plastic or glass-based inulation in favor of soy, it invited in some very unwelcome Toyota loyalisits.

    According to the plaintiff, she learned the hard way about the soy wiring when her Avalon wouldn't start and a look under the hood showed wires chewed, so she had the car towed to a dealer. Toyota told her rodents had caused the damage and it would be no problem to repair the problems as long as she could cough up $6,000 to cover the bill.

    The soy-based wiring is allegedly attracting in rodents, who love to chew it up and use it for nesting material. The lawsuit, Heidi Browder vs. Toyota Motor Corporation, et al. follows a similar lawsuit filed against Honda earlier this year.

    keep reading article "Lawsuit Says Toyota’s Use of Soy-Based Wiring is Attracting Rodent Damage"