2018 Toyota Mirai Owner Complaints
Complaint Summary
The 2018 Toyota Mirai has 2 reported complaints.
- Top issues involve service brakes and forward collision avoidance: automatic emergency braking.
Reliability Score
Reliability Score
Based on 2 complaints
Most Frequent Issues
SERVICE BRAKES
1 50%
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
1 50%
Quick Insights
The top category is SERVICE BRAKES, accounting for 50% of all complaints.
Owners have reported issues across 2 distinct vehicle systems.
Note: Complaint data reflects owner reports and may not always indicate a verified defect. Compare with Recalls and TSBs for a complete picture.
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What owners keep reporting on the 2018 Toyota Mirai
The 2018 Toyota Mirai has 2 owner complaints in this dataset. SERVICE BRAKES is the most common complaint category, representing about 50% of the reports shown here.
Most common complaint categories
The top complaint groups for the 2018 Toyota Mirai are SERVICE BRAKES (1), FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING (1).
Are these complaints a serious red flag?
Potentially. 1 complaint report involve higher-attention systems like brakes, steering, engine, powertrain, fuel, suspension, airbags, or electrical components, which is enough to justify a focused inspection.
What should buyers inspect on a used 2018 Toyota Mirai?
Start with the top complaint systems, compare them against the recall report, then inspect service records for evidence that those same areas were already repaired or monitored.
Detailed Complaint Log
Showing 2 of 2 systems
SERVICE BRAKES
1 Report50% of totalPreviewing the first 1 complaint summaries.
On several occasions the Toyota Mirai would slam on the brakes on its own while at a considerable speed with no other cars around. It was very scary and concerning traveling at high speeds and the brakes being applied abruptly automatically.
11/11/2025
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
1 Report50% of totalPreviewing the first 1 complaint summaries.
On several occasions the Toyota Mirai would slam on the brakes on its own while at a considerable speed with no other cars around. It was very scary and concerning traveling at high speeds and the brakes being applied abruptly automatically.
11/11/2025
Data and Methodology
Scores are derived from NHTSA recalls and owner complaints, normalized by vehicle segment averages.
What are the most common owner complaints for the 2018 Toyota Mirai?
Are complaints about the 2018 Toyota Mirai a serious warning sign?
How should buyers use complaint data for the 2018 Toyota Mirai?
Are complaints about the 2018 Toyota Mirai severe?
Complaint list entries are sourced from owner-submitted NHTSA ODI records.
Toyota Mirai: How should complaint data influence buying decisions?
Carfocal links complaint data directly to recall and maintenance routes for the same model year.
- Complaint entries
- 2
- Top-topic view
- 2 grouped topics shown
- Primary source
- NHTSA ODI owner complaint records
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