2017 · 7 years old at test · Petrol mostly

2017 SEAT Mii MOT pass rate and common faults

1,479 MOT tests in 2024. 80.0% passed first time, compared with 79.8% for all cars the same age.

100About average
Passed first time80.0%
Failed or needed repairs20.0%
Typical mileage at test37,000

Most common reasons for failing

Share of all 1,479 tests where this item caused a failure.

  1. Suspension arms - pins and bushes: pin or bush excessively worn2.0%
  2. Service brake performance: excessively binding1.6%
  3. Wipers: does not clear the windscreen effectively1.6%
  4. Tread depth below requirements of 1.6mm1.2%
    23 marked dangerous
  5. Brake pads: less than 1.5 mm thick1.1%
    23 marked dangerous
  6. Headlamp aim: too low1.1%
  7. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords1.1%
  8. Fuel cap/sealing device: ineffective1.0%
  9. Tyres - condition: has a tear, caused by separation or partial failure of its structure0.9%
    23 marked dangerous
  10. Washers: not working0.8%

Problem areas

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

  1. Lights & electrics7.4%
  2. Brakes6.0%
  3. Tyres5.7%
  4. Visibility (wipers, screen, mirrors)4.1%
  5. Suspension2.9%
  6. Body & chassis1.9%
  7. Emissions & leaks1.6%
  8. Number plates & VIN0.3%

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 structure15.0%
  2. Tread depth below requirements of 1.6mm11.5%
  3. Brake discs: in such a condition that it is seriously weakened5.6%
  4. Suspension arms - pins and bushes: pin or bush excessively worn5.4%
  5. Brake pads: less than 1.5 mm thick5.2%

What this means if you are buying one

This model year is about as good as an average car its age. Before buying, check the area that fails most: suspension arms - pins and bushes: pin or bush excessively worn. 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 2017 SEAT Mii?

In 2024, 80.0% of 2017 SEAT Mii cars passed their MOT first time, across 1,479 tests. The average for all 7-year-old cars was 79.8%.

What are the most common MOT failures on a 2017 SEAT Mii?

The most common failure reasons were suspension arms - pins and bushes: pin or bush excessively worn; service brake performance: excessively binding; wipers: does not clear the windscreen effectively. The biggest problem area was lights & electrics.

Is the 2017 SEAT Mii reliable at MOT time?

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