2021 · 3 years old at test · Petrol mostly

2021 Mercedes-Benz AMG MOT pass rate and common faults

2,988 MOT tests in 2024. 86.1% passed first time, compared with 87.6% for all cars the same age.

98About average
Passed first time86.1%
Failed or needed repairs13.9%
Typical mileage at test22,000

Most common reasons for failing

Share of all 2,988 tests where this item caused a failure.

  1. Tyres - condition: has ply or cords exposed3.6%
    192 marked dangerous
  2. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords2.1%
  3. Tread depth below requirements of 1.6mm1.4%
    78 marked dangerous
  4. Road Wheels - condition: fractured1.4%
    65 marked dangerous
  5. Tyres - condition: has a bulge, caused by separation or partial failure of its structure1.3%
    59 marked dangerous
  6. Headlamp aim: too high1.1%
  7. Registration plates: does not conform to the specified requirements0.8%
  8. Tyres - condition: has a tear, caused by separation or partial failure of its structure0.3%
    16 marked dangerous
  9. Brake pads: less than 1.5 mm thick0.3%
    13 marked dangerous
  10. Malfunction indicator lamp: inoperative or indicates a malfunction0.3%

Problem areas

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

  1. Tyres9.4%
  2. Lights & electrics1.9%
  3. Wheels1.5%
  4. Number plates & VIN1.1%
  5. Brakes0.8%
  6. Emissions & leaks0.8%
  7. Visibility (wipers, screen, mirrors)0.7%
  8. Body & chassis0.3%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm11.7%
  2. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords2.8%
  3. Brake pads: less than 1.5 mm thick2.7%
  4. Tyres - condition: has a tear, caused by separation or partial failure of its structure2.6%
  5. Non-component advisories: Nail in tyre2.4%

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 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 AMGAll AMG years

Questions

What is the MOT pass rate for a 2021 Mercedes-Benz AMG?

In 2024, 86.1% of 2021 Mercedes-Benz AMG cars passed their MOT first time, across 2,988 tests. The average for all 3-year-old cars was 87.6%.

What are the most common MOT failures on a 2021 Mercedes-Benz AMG?

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; tread depth below requirements of 1.6mm. The biggest problem area was tyres.

Is the 2021 Mercedes-Benz AMG reliable at MOT time?

Its MOT Rank score is 98, which is about average for a car of its age (100 means exactly average).