2020 · 4 years old at test · Electric mostly

2020 SEAT Mii MOT pass rate and common faults

281 MOT tests in 2024. 89.0% passed first time, compared with 86.9% for all cars the same age.

102Above average
Passed first time89.0%
Failed or needed repairs11.0%
Typical mileage at test19,000

Most common reasons for failing

Share of all 281 tests where this item caused a failure.

  1. Tyres - condition: has a bulge, caused by separation or partial failure of its structure5.0%
    15 marked dangerous
  2. Tread depth below requirements of 1.6mm1.1%
    3 marked dangerous
  3. Washers: not working0.7%
  4. Registration plates: inscription illegible0.7%
  5. Coil spring: fractured or broken0.4%
  6. Rbt (sp): efficiency below requirements0.4%
  7. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords0.4%
  8. Headlamp: light source and lamp not compatible0.4%
  9. Headlamp aim: too low and too far to the right.0.4%
  10. SRS malfunction indicator lamp: warning lamp indicates a fault0.4%

Problem areas

Failure items found per 100 tests, by part of the car.

  1. Tyres7.5%
  2. Lights & electrics1.4%
  3. Visibility (wipers, screen, mirrors)0.7%
  4. Number plates & VIN0.7%
  5. Suspension0.4%
  6. Brakes0.4%
  7. Seat belts & airbags0.4%
  8. Body & chassis0.4%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tyres - condition: has a tear, caused by separation or partial failure of its structure11.0%
  2. Tread depth below requirements of 1.6mm7.8%
  3. Brake discs: in such a condition that it is seriously weakened5.3%
  4. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords2.8%
  5. Non-component advisories: Nail in tyre2.8%

What this means if you are buying one

This model year does better than most cars its age, so it is a reasonable used buy on MOT record alone. Before buying, check the area that fails most: tyres - condition: has a bulge, caused by separation or partial failure of its structure. Then look up the car's own MOT history on GOV.UK with its number plate, and look for repeat advisories.

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Questions

What is the MOT pass rate for a 2020 SEAT Mii?

In 2024, 89.0% of 2020 SEAT Mii cars passed their MOT first time, across 281 tests. The average for all 4-year-old cars was 86.9%.

What are the most common MOT failures on a 2020 SEAT Mii?

The most common failure reasons were tyres - condition: has a bulge, caused by separation or partial failure of its structure; tread depth below requirements of 1.6mm; washers: not working. The biggest problem area was tyres.

Is the 2020 SEAT Mii reliable at MOT time?

Its MOT Rank score is 102, which is above average for a car of its age (100 means exactly average).