2018 · 6 years old at test · Petrol mostly

2018 SEAT Mii MOT pass rate and common faults

1,260 MOT tests in 2024. 84.5% passed first time, compared with 82.5% for all cars the same age.

102Above average
Passed first time84.5%
Failed or needed repairs15.5%
Typical mileage at test30,000

Most common reasons for failing

Share of all 1,260 tests where this item caused a failure.

  1. Wipers: does not clear the windscreen effectively1.9%
  2. Suspension arms - pins and bushes: pin or bush excessively worn1.4%
  3. Tread depth below requirements of 1.6mm1.2%
    23 marked dangerous
  4. Headlamp aim: too low1.1%
  5. Position lamp: not working0.9%
  6. Daytime running lamps: not working0.8%
  7. Tyres - condition: has a tear, caused by separation or partial failure of its structure0.8%
    22 marked dangerous
  8. Service brake performance: excessively binding0.7%
  9. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords0.7%
  10. Tyres - condition: has ply or cords exposed0.6%
    14 marked dangerous

Problem areas

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

  1. Lights & electrics6.7%
  2. Tyres4.4%
  3. Visibility (wipers, screen, mirrors)4.2%
  4. Brakes3.3%
  5. Suspension2.2%
  6. Emissions & leaks1.5%
  7. Seat belts & airbags0.4%
  8. Number plates & VIN0.2%

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 structure17.9%
  2. Tread depth below requirements of 1.6mm10.2%
  3. Suspension arms - pins and bushes: pin or bush excessively worn5.1%
  4. Brake pads: less than 1.5 mm thick4.5%
  5. Brake discs: significantly and obviously worn3.7%

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: wipers: does not clear the windscreen effectively. Then look up the car's own MOT history on GOV.UK with its number plate, and look for repeat advisories.

← 2017 MiiAll Mii years2019 Mii →

Questions

What is the MOT pass rate for a 2018 SEAT Mii?

In 2024, 84.5% of 2018 SEAT Mii cars passed their MOT first time, across 1,260 tests. The average for all 6-year-old cars was 82.5%.

What are the most common MOT failures on a 2018 SEAT Mii?

The most common failure reasons were wipers: does not clear the windscreen effectively; suspension arms - pins and bushes: pin or bush excessively worn; tread depth below requirements of 1.6mm. The biggest problem area was lights & electrics.

Is the 2018 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).