2021 · 3 years old at test · Petrol mostly

2021 MG ZS MOT pass rate and common faults

15,028 MOT tests in 2024. 88.5% passed first time, compared with 87.6% for all cars the same age.

101About average
Passed first time88.5%
Failed or needed repairs11.5%
Typical mileage at test23,000

Most common reasons for failing

Share of all 15,028 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 cords1.4%
  2. Tread depth below requirements of 1.6mm1.2%
    276 marked dangerous
  3. Brake pads: less than 1.5 mm thick1.0%
    179 marked dangerous
  4. Headlamp aim: too high0.6%
  5. Service brake performance: excessively binding0.6%
  6. Wipers: does not clear the windscreen effectively0.6%
  7. Tyres - condition: has ply or cords exposed0.5%
    106 marked dangerous
  8. Headlamp: not working on dipped beam0.5%
  9. Headlamp aim: too low0.5%
  10. Brake discs: significantly and obviously worn0.4%

Problem areas

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

  1. Tyres4.0%
  2. Lights & electrics3.9%
  3. Brakes3.7%
  4. Visibility (wipers, screen, mirrors)1.7%
  5. Suspension1.0%
  6. Seat belts & airbags0.3%
  7. Steering0.3%
  8. Emissions & leaks0.3%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Brake discs: in such a condition that it is seriously weakened11.4%
  2. Tread depth below requirements of 1.6mm9.2%
  3. Brake pads: less than 1.5 mm thick5.7%
  4. Non-component advisories: Child Seat fitted not allowing full inspection of adult belt3.6%
  5. Non-component advisories: Nail in tyre2.8%

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: 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.

← 2020 ZSAll ZS years

Questions

What is the MOT pass rate for a 2021 MG ZS?

In 2024, 88.5% of 2021 MG ZS cars passed their MOT first time, across 15,028 tests. The average for all 3-year-old cars was 87.6%.

What are the most common MOT failures on a 2021 MG ZS?

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 MG ZS reliable at MOT time?

Its MOT Rank score is 101, which is about average for a car of its age (100 means exactly average).