SEAT Mii EV
Reliability, estimated running costs, and MOT data across 2 model years from 2,153 MOT tests in 2024.
Avg Pass Rate
91%
Total Tests
2,153
Highest Pass Rate
2020 (92%)
Years Covered
2
About the SEAT Mii EV
The SEAT Mii EV was MOT tested 2,153 times in 2024 (DVSA data, retests included) across 2 model years (2020 to 2021), with an average pass rate of 91%. That's comfortably above the average of 82% across all models in our data. Our records list electric versions.
Best and Worst Years
Of the years with at least 100 tests, the 2020 model has the highest pass rate at 92% from 425 tests. The 2021 model has the lowest at 90%. With just a 2 point gap, pass rates are similar across these years. Newer cars usually pass more often simply because they are younger.
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.
Estimated Running Costs
Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.
Full 2021 detailsHow reliable is the SEAT Mii EV?
SEAT Mii EV by Year
Click any year to see detailed running costs, reliability data, and comparisons with similar cars.
Questions about the SEAT Mii EV
Is the SEAT Mii EV reliable?
Across its 2 model years in our data (2020 to 2021), the SEAT Mii EV averages a 91% MOT pass rate, from 2,153 tests (DVSA MOT data for tests in 2024, retests included). That's 9 points above the average of 82% across all models in the same data. The 2020 model has the highest pass rate of the years with at least 100 tests, at 92%.
Which year SEAT Mii EV has the best MOT pass rate?
Of the years with at least 100 tests, the 2020 SEAT Mii EV has the highest MOT pass rate at 92%, while the 2021 model has the lowest at 90%, a 2 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.
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