SEAT Mii Ev: MOT pass rate and reliability data

The SEAT Mii Ev passes its MOT first time more often than the average UK car, by 12.7 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 1,418 individual SEAT Mii Ev tests. Nothing here is an estimate or a survey.

The numbers

First-time pass rate89.4%
UK national average76.7%
Difference+12.7 points
Tests analysed1,418
Average mileage at test18,814 miles
Average year of manufacture2021
Reliability rank799 of 2,005 models

What this means if you are buying one

A 89.4% first-time pass rate means roughly 11 in every 100 SEAT Mii Evs presented for MOT fail on the first attempt. That is better than average, so a well-kept example is a reasonably safe used buy. The average SEAT Mii Ev tested had covered 18,814 miles and was built around 2021.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. On a SEAT Mii Ev bought as a repairable salvage, the mechanical side is less likely to spring surprises, so your repair estimate should hold up reasonably well.

Before you bid: run the lot through the analyzer, check the car's own record, check the mileage, decode the VIN, and if it carries a marker use the write-off value calculator. Or compare it against another model.

Looking at a specific SEAT Mii Ev rather than the model in general? The free check covers its MOT and mileage history, and the full HPI report confirms the insurance write-off category, outstanding finance and whether it is recorded stolen, from licensed data for 5 credits. Already own one that has been damaged? Work out whether fixing it beats selling it with the repair or scrap calculator, and see what damaged SEAT Mii Evs actually sold for at UK salvage auction.

Most common MOT failures on a SEAT Mii Ev

  1. A tyre seriously damaged, 4.8% of tests (2.36x the national rate for this defect)
  2. A suspension pin, bush or joint excessively worn, 1.8% of tests
  3. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 0.7% of tests
  4. Tyre tread depth not in accordance with the requirements, 0.7% of tests
  5. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 0.6% of tests
  6. A tyre has a lump, bulge or tear caused by separation or partial failure of its structure. This includes any lifting of the tread rubber, 0.6% of tests (4.02x the national rate for this defect)
  7. Wiper blade missing or obviously not clearing the windscreen, 0.3% of tests
  8. A spring or spring component fractured or seriously weakened, 0.3% of tests
  9. A tyre pressure monitoring system malfunctioning or obviously inoperative, 0.2% of tests
  10. The aim of a headlamp is not within limits laid down in the requirements, 0.2% of tests

From 1,955 DVSA-tracked SEAT Mii Ev tests, 2024. DVSA testers marked 12% of these flagged SEAT Mii Ev defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 4.97% nationally.

SEAT Mii Ev pass rate by model year

Pass rates fall steadily as cars age, so the model year matters as much as the model. First-time pass rate for each SEAT Mii Ev year:

Other SEAT models

Models with a similar pass rate

If this car is a salvage or write-off

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All 2,005 models ranked by MOT pass rate