Seat Mii ev
Reliability, running costs, and MOT data across 2 years from 2,153 real MOT tests.
Avg Pass Rate
91%
Total Tests
2,153
Best Year
2020 (92%)
Years Covered
2
How reliable is the Seat Mii ev?
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About the Seat Mii ev
The Seat Mii ev has been tested 2,153 times in 2024 MOT data across 2 model years (2020 to 2021), with an average pass rate of 91%. That's comfortably above the national average of 82%, making it a reliable choice. Available as electric.
Best and Worst Years
The 2020 model is the most reliable with a 92% pass rate from 425 tests. The 2021 model has the lowest at 90%. With just a 2 point spread, the Mii ev is consistently reliable regardless of year.
Mileage Across Years
The oldest model in our data (2020) averages 19,385 miles, while the newest (2021) averages 19,006 miles.
Compared to the Seat brand average of 85%, the Mii ev performs 6 points better, making it one of the more reliable options in the Seat range.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.