2021 · 3 years old at test · Petrol mostly

2021 Mazda CX-30 MOT pass rate and common faults

8,044 MOT tests in 2024. 92.2% passed first time, compared with 87.6% for all cars the same age.

105Above average
Passed first time92.2%
Failed or needed repairs7.8%
Typical mileage at test21,000

Most common reasons for failing

Share of all 8,044 tests where this item caused a failure.

  1. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords1.5%
  2. Tread depth below requirements of 1.6mm1.2%
    144 marked dangerous
  3. Brake pads: less than 1.5 mm thick0.9%
    103 marked dangerous
  4. Washers: provides insufficient washer liquid0.6%
  5. Wipers: does not clear the windscreen effectively0.6%
  6. Headlamp aim: too high0.6%
  7. Headlamp aim: too low0.4%
  8. Shock absorbers: has a serious fluid leak0.3%
  9. Malfunction indicator lamp: inoperative or indicates a malfunction0.3%

Problem areas

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

  1. Tyres3.5%
  2. Visibility (wipers, screen, mirrors)1.7%
  3. Brakes1.7%
  4. Lights & electrics1.3%
  5. Emissions & leaks0.4%
  6. Suspension0.3%
  7. Body & chassis0.2%
  8. Seat belts & airbags0.1%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm11.8%
  2. Brake discs: in such a condition that it is seriously weakened10.2%
  3. Brake pads: less than 1.5 mm thick7.9%
  4. Shock absorbers: has a serious fluid leak7.8%
  5. Non-component advisories: Child Seat fitted not allowing full inspection of adult belt2.1%

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: tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords. 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 2021 Mazda CX-30?

In 2024, 92.2% of 2021 Mazda CX-30 cars passed their MOT first time, across 8,044 tests. The average for all 3-year-old cars was 87.6%.

What are the most common MOT failures on a 2021 Mazda CX-30?

The most common failure reasons were tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords; tread depth below requirements of 1.6mm; brake pads: less than 1.5 mm thick. The biggest problem area was tyres.

Is the 2021 Mazda CX-30 reliable at MOT time?

Its MOT Rank score is 105, which is above average for a car of its age (100 means exactly average).