2012 · 12 years old at test · Petrol mostly

2012 SEAT Mii MOT pass rate and common faults

1,751 MOT tests in 2024. 71.2% passed first time, compared with 64.3% for all cars the same age.

111Well above average
Passed first time71.2%
Failed or needed repairs28.8%
Typical mileage at test67,000

Most common reasons for failing

Share of all 1,751 tests where this item caused a failure.

  1. SRS malfunction indicator lamp: warning lamp indicates a fault4.4%
  2. Service brake performance: excessively binding3.9%
  3. Tread depth below requirements of 1.6mm2.1%
    55 marked dangerous
  4. Rbt (sp): efficiency below requirements1.6%
  5. Exhaust system: has a major leak of exhaust gases1.6%
  6. Registration plate lamp(s): inoperative in the case of a single lamp or all lamps1.5%
  7. Suspension arms - pins and bushes: pin or bush excessively worn1.5%
  8. Wipers: does not clear the windscreen effectively1.2%
  9. Fuel cap/sealing device: ineffective1.1%
  10. Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits1.0%

Problem areas

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

  1. Brakes12.6%
  2. Lights & electrics12.4%
  3. Seat belts & airbags6.4%
  4. Visibility (wipers, screen, mirrors)4.6%
  5. Tyres4.5%
  6. Body & chassis4.3%
  7. Suspension4.2%
  8. Emissions & leaks3.3%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm14.6%
  2. Tyres - condition: has a tear, caused by separation or partial failure of its structure11.3%
  3. Brake discs: in such a condition that it is seriously weakened7.9%
  4. Suspension arms - pins and bushes: pin or bush excessively worn5.6%
  5. Service brake performance: excessively binding5.1%

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: srs malfunction indicator lamp: warning lamp indicates a fault. Then look up the car's own MOT history on GOV.UK with its number plate, and look for repeat advisories.

All Mii years2013 Mii →

Questions

What is the MOT pass rate for a 2012 SEAT Mii?

In 2024, 71.2% of 2012 SEAT Mii cars passed their MOT first time, across 1,751 tests. The average for all 12-year-old cars was 64.3%.

What are the most common MOT failures on a 2012 SEAT Mii?

The most common failure reasons were srs malfunction indicator lamp: warning lamp indicates a fault; service brake performance: excessively binding; tread depth below requirements of 1.6mm. The biggest problem area was brakes.

Is the 2012 SEAT Mii reliable at MOT time?

Its MOT Rank score is 111, which is well above average for a car of its age (100 means exactly average).