2014 · 10 years old at test · Petrol mostly

2014 SEAT Mii MOT pass rate and common faults

3,099 MOT tests in 2024. 76.0% passed first time, compared with 69.9% for all cars the same age.

109Well above average
Passed first time76.0%
Failed or needed repairs24.0%
Typical mileage at test55,000

Most common reasons for failing

Share of all 3,099 tests where this item caused a failure.

  1. Service brake performance: excessively binding2.8%
  2. Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits2.2%
  3. Tread depth below requirements of 1.6mm2.1%
    86 marked dangerous
  4. Suspension arms - pins and bushes: pin or bush excessively worn1.9%
  5. Fuel cap/sealing device: ineffective1.5%
  6. Registration plate lamp(s): inoperative in the case of a single lamp or all lamps1.3%
  7. Wipers: does not clear the windscreen effectively1.1%
  8. Headlamp aim: too low1.1%
  9. Service brake imbalance: across an axle1.1%
  10. Catalyst emissions: carbon monoxide content after 2nd fast idle exceeds default limits0.9%

Problem areas

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

  1. Brakes10.7%
  2. Lights & electrics10.0%
  3. Emissions & leaks7.5%
  4. Tyres4.7%
  5. Suspension4.4%
  6. Visibility (wipers, screen, mirrors)3.7%
  7. Body & chassis3.3%
  8. Seat belts & airbags0.9%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm13.5%
  2. Tyres - condition: has a tear, caused by separation or partial failure of its structure12.4%
  3. Brake discs: in such a condition that it is seriously weakened8.0%
  4. Suspension arms - pins and bushes: pin or bush excessively worn5.7%
  5. Service brake performance: excessively binding5.5%

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: service brake performance: excessively binding. 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 2014 SEAT Mii?

In 2024, 76.0% of 2014 SEAT Mii cars passed their MOT first time, across 3,099 tests. The average for all 10-year-old cars was 69.9%.

What are the most common MOT failures on a 2014 SEAT Mii?

The most common failure reasons were service brake performance: excessively binding; catalyst emissions: lambda reading after 2nd fast idle outside specified limits; tread depth below requirements of 1.6mm. The biggest problem area was brakes.

Is the 2014 SEAT Mii reliable at MOT time?

Its MOT Rank score is 109, which is well above average for a car of its age (100 means exactly average).