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MOT reliability

Seat Mii

18,033 vehicles · 180,894 completed MOT tests analysed
83%
MOT pass rate

Based on 18,033 Seat Mii vehicles and 180,894 completed MOT tests, the Seat Mii has an overall 83% pass rate, with an average recorded mileage of 59,530 miles.

18,033
Vehicles
180,894
MOT tests
5,438
Avg miles / year
1.2
Faults per test
3%
Dangerous-fault share

Seat Mii problem areas

Where faults occur most across all Seat Mii MOT tests:

  • Tyres, wheels & suspension43%
  • Brakes22%
  • Other21%
  • Lamps & electrical7%
  • Visibility6%
  • Emissions & nuisance3%
  • Body & structure2%
  • Seatbelts & equipment2%

Seat Mii pass rate by age

How the Seat Mii's MOT pass rate changes as it ages (buckets with 20+ tests).

Age (years)TestsPass rate
11392%
248492%
320,52690%
420,52686%
521,00285%
620,95584%
720,40183%
818,87982%
917,43681%
1015,23780%
1112,07179%
128,43977%
134,13576%
1478973%

Fuel types: Petrol (18,029), Electric (1), LPG (1), Gas Bi-Fuel (1), Diesel (1)

Most common Seat Mii MOT faults

These are the faults and advisories recorded most often across Seat Mii MOT tests:

  1. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (7,743 times)
  2. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (7,468 times)
  3. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (7,367 times)
  4. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (6,870 times)
  5. Front Brake pad(s) wearing thin (1.1.13 (a) (ii)) (4,160 times)
  6. Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii)) (3,972 times)
  7. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (3,218 times)
  8. Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (3,071 times)
  9. Nearside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (3,007 times)
  10. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (2,454 times)
  11. Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) (2,198 times)
  12. Offside Rear Service brake binding but not excessively (1.2.1 (f)) (2,096 times)
  13. Nearside Rear Service brake binding but not excessively (1.2.1 (f)) (2,059 times)
  14. Offside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii)) (2,024 times)
  15. Nearside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii)) (1,972 times)

Seat Mii pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2021 1 2 100% 19,588
2019 1,316 6,946 89% 34,988
2018 1,295 8,171 87% 40,729
2017 1,512 11,585 86% 47,359
2016 2,267 20,028 83% 52,593
2015 2,779 27,632 84% 58,758
2014 3,260 35,432 84% 64,517
2013 3,700 45,882 81% 70,830
2012 1,903 25,233 81% 75,403

Seat Mii reliability FAQ

Across 18,033 Seat Mii vehicles in our MOT data, 83% pass the MOT (a 17% failure rate), with about 1.2 faults or advisories recorded per test.

The most frequently recorded Seat Mii MOT issues are: Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)); Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)); Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)).

The typical Seat Mii in our data has covered around 59,530 miles.

Compare the Seat Mii

See how the Seat Mii stacks up against other Seat models on MOT reliability:

Mii vs Ibiza Mii vs Leon Mii vs Alhambra Mii vs Arona

Check a specific Seat Mii

Enter a registration to see that exact vehicle's full MOT history, advisories and recurring faults.

See all Seat models · Learn about common MOT failures · what an MOT checks