2021 · 3 years old at test · Petrol mostly

2021 BMW m4 MOT pass rate and common faults

929 MOT tests in 2024. 91.3% passed first time, compared with 87.6% for all cars the same age.

104Above average
Passed first time91.3%
Failed or needed repairs8.7%
Typical mileage at test18,000

Most common reasons for failing

Share of all 929 tests where this item caused a failure.

  1. Tyres - condition: has ply or cords exposed2.3%
    42 marked dangerous
  2. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords2.0%
  3. Registration plates: does not conform to the specified requirements1.4%
  4. Tread depth below requirements of 1.6mm1.0%
    17 marked dangerous
  5. Tyres - condition: has a bulge, caused by separation or partial failure of its structure0.5%
    6 marked dangerous
  6. Emissions not tested: unable to be completed0.2%
  7. Track rod end: ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt0.2%
  8. Washers: provides insufficient washer liquid0.2%
  9. Side repeaters: not working0.2%

Problem areas

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

  1. Tyres6.0%
  2. Number plates & VIN1.6%
  3. Lights & electrics0.6%
  4. Visibility (wipers, screen, mirrors)0.5%
  5. Emissions & leaks0.4%
  6. Steering0.2%
  7. Suspension0.1%
  8. Seat belts & airbags0.1%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm11.3%
  2. Non-component advisories: Nail in tyre2.7%
  3. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords2.2%
  4. Tyres - condition: has a tear, caused by separation or partial failure of its structure1.7%
  5. Tread depth: tread pattern not visible over the whole tread area when minimum depth required is 1.0mm1.5%

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: tyres - condition: has ply or cords exposed. Then look up the car's own MOT history on GOV.UK with its number plate, and look for repeat advisories.

← 2020 m4All m4 years

Questions

What is the MOT pass rate for a 2021 BMW m4?

In 2024, 91.3% of 2021 BMW m4 cars passed their MOT first time, across 929 tests. The average for all 3-year-old cars was 87.6%.

What are the most common MOT failures on a 2021 BMW m4?

The most common failure reasons were tyres - condition: has ply or cords exposed; tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords; registration plates: does not conform to the specified requirements. The biggest problem area was tyres.

Is the 2021 BMW m4 reliable at MOT time?

Its MOT Rank score is 104, which is above average for a car of its age (100 means exactly average).