2020 Toyota Mirai
2020 Toyota Mirai
Overview
The 2020 Toyota Mirai, a pioneer in hydrogen fuel cell electric vehicles (FCEVs), represents a significant step in alternative powertrain technology. Its unique system, which generates electricity onboard from hydrogen, offers zero tailpipe emissions and a driving experience akin to a battery electric vehicle, but with the convenience of faster refueling. Reliability data for FCEVs like the Mirai is still developing compared to traditional internal combustion engine vehicles. However, early indications and Toyota’s reputation for robust engineering suggest a generally high level of dependability, particularly in its core powertrain components. This analysis focuses on documented issues beyond standard maintenance, reflecting the specific nature of its advanced technology.
Engine
Fuel Cell Stack
Reduced Power Output
- Symptoms: Noticeable decrease in acceleration and overall vehicle performance. May be accompanied by dashboard warning lights related to the fuel cell system.
- Solution: Diagnosis and potential recalibration or replacement of fuel cell stack components. Toyota’s warranty typically covers this for an extended period.
- Cost: $5,000 - $15,000 (out of warranty)
Hydrogen Leaks
- Symptoms: Faint smell of hydrogen, potential loss of power, and specific warning indicators on the dashboard. Safety systems are designed to mitigate risks.
- Solution: Immediate inspection by a certified technician to identify and repair the leak in the hydrogen storage or delivery system.
- Cost: $500 - $2,500
Electric Motor
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Transmission
Single-Speed Reduction Gear
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Suspension
Standard Independent Suspension
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Electrical
High-Voltage Battery Pack
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
12V Auxiliary Battery
Premature Failure
- Symptoms: Difficulty starting the vehicle, electrical system malfunctions (e.g., infotainment, lights), dashboard warning lights.
- Solution: Replacement of the 12V auxiliary battery.
- Cost: $200 - $400
Onboard Charger
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Exterior
Body Panels and Trim
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
LED Lighting System
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Interior
Infotainment System
Software Glitches
- Symptoms: Occasional freezing, unresponsiveness, or errors with navigation or media playback.
- Solution: Software updates or system resets. May require dealer intervention.
- Cost: $0 - $200
Climate Control System
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Summary Verdict
The 2020 Toyota Mirai demonstrates strong reliability, particularly in its innovative fuel cell powertrain, benefiting from Toyota’s extensive experience with hybrid and electric technologies. While the fuel cell stack itself is generally robust, potential issues like reduced power output or rare hydrogen leaks are the most significant concerns, though often covered by warranty. The 12V auxiliary battery is a common point of failure across many vehicle types, including the Mirai. Electrical and interior systems show minor software-related glitches, but these are typically resolved with updates. Overall, the Mirai is a reliable vehicle, with its unique technology presenting specific, but manageable, potential repair considerations outside of standard maintenance.