2019 Toyota Mirai
2019 Toyota Mirai
Overview
The 2019 Toyota Mirai represents a significant step in alternative fuel vehicles, utilizing a hydrogen fuel cell system to generate electricity. This innovative powertrain offers a unique driving experience with zero tailpipe emissions. As a first-generation production vehicle in many markets, its reliability is a key consideration for potential owners. While the core fuel cell technology has proven robust, like any complex system, specific components and associated systems require careful examination. This analysis focuses on documented reliability trends and potential concerns beyond standard maintenance, providing insights into the long-term viability and ownership experience of the 2019 Mirai.
Engine
Fuel Cell Stack
Reduced Performance Over Time
- Symptoms: Gradual decrease in power output, reduced range, increased hydrogen consumption.
- Solution: Regular diagnostic checks, potential stack refurbishment or replacement.
- Cost: $5,000 - $15,000+
Water Management System Malfunctions
- Symptoms: Error codes related to coolant or water circulation, potential freezing in cold weather, reduced efficiency.
- Solution: Inspection and repair of pumps, valves, and sensors within the water management system.
- Cost: $300 - $1,200
Electric Motor
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Hydrogen Storage Tanks
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
Infotainment System
Software Glitches
- Symptoms: Screen freezing, unresponsive touch controls, navigation system errors.
- Solution: Software updates, system resets, potential module replacement.
- Cost: $100 - $800
12V Auxiliary Battery
Premature Failure
- Symptoms: Difficulty starting the vehicle (though primarily electric, the 12V powers essential systems), electrical system warnings.
- Solution: Replacement of the 12V auxiliary battery.
- Cost: $150 - $300
Exterior
Body Panels and Trim
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
LED Lighting
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Interior
Upholstery and Trim
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Climate Control System
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Summary Verdict
The 2019 Toyota Mirai demonstrates a generally strong reliability record, particularly for its innovative fuel cell powertrain. The primary areas of concern revolve around the long-term performance and potential degradation of the fuel cell stack, which can be a significant repair cost. Issues with the water management system and occasional software glitches in the infotainment system are also noted. The 12V auxiliary battery has shown some instances of premature failure. However, many core components, including the electric motor, transmission, suspension, and exterior/interior elements, have not reported widespread issues. Owners should be aware of the specialized nature of fuel cell maintenance and the associated costs, especially for stack-related repairs.