2017 Toyota Mirai

The 2017 Toyota Mirai is a hydrogen fuel cell vehicle, meaning it uses hydrogen to generate electricity to power an electric motor. It was only available with a single powertrain configuration. The Mirai produces 151 horsepower and 247 lb-ft of torque. Owners often praise the Mirai for its futuristic technology and zero-emission driving, while common complaints revolve around the limited hydrogen refueling infrastructure and the vehicle’s unconventional styling.

Electric Motor

Electric Motor

• Fuel Cell Stack Degradation
  • Description/Symptoms: Diminished range and overall performance due to gradual degradation of the fuel cell stack over time. Some owners have reported premature stack failure.
  • Solution: Replacement of the fuel cell stack.
  • Estimated Cost to Fix:
  • Recalls: None Found

Battery

High-Voltage Battery

• Battery Degradation
  • Description/Symptoms: Reduced range and overall performance due to degradation of the high-voltage battery over time.
  • Solution: Replacement of the high-voltage battery.
  • Estimated Cost to Fix:
  • Recalls: None Found

Electrical

• Fuel Cell System Malfunctions
  • Description/Symptoms: Various warning lights related to the fuel cell system illuminating on the dashboard. This can range from sensor issues to problems with the fuel cell stack itself.
  • Solution: Diagnosis and repair/replacement of the faulty component(s) within the fuel cell system. This can include sensors, pumps, or the fuel cell stack itself.
  • Estimated Cost to Fix:
  • Recalls: None Found
• Hydrogen Leakage
  • Description/Symptoms: Hydrogen leakage from the hydrogen tanks or fuel lines.
  • Solution: Replacement of the faulty hydrogen tanks or fuel lines.
  • Estimated Cost to Fix:
  • Recalls: None Found

Exterior

• Door Handle Issues
  • Description/Symptoms: Door handles becoming stuck or failing to operate correctly, hindering entry or exit from the vehicle.
  • Solution: Replacement of the faulty door handle mechanism.
  • Estimated Cost to Fix:
  • Recalls: None Found

Interior

• Infotainment System Glitches
  • Description/Symptoms: The infotainment system freezing, lagging, or experiencing software glitches, affecting navigation, audio, and climate control functions.
  • Solution: Software update or replacement of the infotainment system unit.
  • Estimated Cost to Fix:
  • Recalls: None Found

Summary

The 2017 Toyota Mirai has a few common problems. Most common are the fuel cell stack degradation, hydrogen leakage, and door handle issues. While some are relatively inexpensive to repair, some issues like fuel cell degradation can be expensive. The Mirai’s dependency on hydrogen fuel cell tech makes it a unique car, but also limits the infrastructure it can support and the potential problems it can have.