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

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. The SEAT Mii Ev sits 12.7 points above the national average, ranked 799 of 2,005 models. On one bought as 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 recorded closing bids for damaged SEAT Mii Evs at UK salvage auction.

Most common MOT failures on a SEAT Mii Ev

1. A tyre seriously damaged, 6.3% of tests (2.27x the national rate for this defect)
2. A suspension pin, bush or joint excessively worn, 2.4% of tests
3. Tyre tread depth not in accordance with the requirements, 0.8% of tests
4. 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, 0.8% of tests (4x the national rate for this defect)
5. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 0.8% of tests
6. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 0.8% of tests
7. Wiper blade missing or obviously not clearing the windscreen, 0.4% of tests
8. A tyre pressure monitoring system malfunctioning or obviously inoperative, 0.3% of tests
9. The aim of a headlamp is not within limits laid down in the requirements, 0.3% of tests
10. A tyre cords visible or damaged, 0.3% of tests

From 1,418 DVSA-tracked SEAT Mii Ev tests, 2024. DVSA testers marked 13.11% of these flagged SEAT Mii Ev defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 5.11% nationally.

Most common MOT advisories on a SEAT Mii Ev

An advisory doesn't fail the car - the tester flags it as worth watching, but it still passes. A different list from the failures above: what testers are noting on a SEAT Mii Ev before it actually fails on it.

1. A tyre seriously damaged, 13.5% of tests, also fails
2. Tyre tread depth not in accordance with the requirements, 13% of tests, also fails
3. Brake disc or drum excessively weakened, insecure or fractured, 4.5% of tests
4. A suspension pin, bush or joint excessively worn, 2.8% of tests, also fails
5. Excessive fluctuation in brake effort through each wheel revolution., 0.6% of tests
6. Number plate inscription missing or illegible, 0.4% of tests
7. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 0.4% of tests, also fails
8. Brake disc or drum significantly and obviously worn, 0.3% of tests
9. Significant brake effort recorded with no brake applied indicating a binding brake, 0.2% of tests
10. Parking brake efficiency below minimum requirement, 0.1% of tests

From 1,418 DVSA-tracked SEAT Mii Ev tests, 2024.

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:

• 2020 SEAT Mii Ev - 91.4% first-time pass, 280 tests
• 2021 SEAT Mii Ev - 89% first-time pass, 1,136 tests

Other SEAT models

• SEAT Ibiza - 71.3%
• SEAT Leon - 79.5%
• SEAT Arona - 86.6%
• SEAT Ateca - 89.7%
• SEAT Alhambra - 77.7%
• SEAT Mii - 82.1%
• SEAT Altea - 65.9%
• SEAT Tarraco - 86.6%

Models with a similar pass rate

• Skoda Scala - 89.4%
• Audi Q7 Sln Blk Ed 50tdi Mhev Qto A - 89.4%
• BMW M340i Xdrive Mhev Auto - 89.4%
• BMW 218i Sport Auto - 89.4%
• Fiat 500 Pop Mhev - 89.4%
• Peugeot 208 Active Premium Puretech Ss - 89.4%

If this car is a salvage or write-off

• What does Cat N mean? Category N explained
• What does Cat S mean? Category S explained
• Cat S vs Cat N: the real differences
• Do you need an HPI check on a car you know is a write-off?

Embed this data

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<a href="https://www.salvageprophet.co.uk/mot/seat-mii-ev"><img src="https://www.salvageprophet.co.uk/badge/seat-mii-ev.svg" width="340" height="92" alt="SEAT Mii Ev MOT Pass Rate: 89.4% - Salvage Prophet"></a>

Run a garage or parts site? Embed the SEAT Mii Ev's top real failure reason instead, linked back here.

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All 2,005 models ranked by MOT pass rate