2017 · 7 years old at test · Diesel mostly

2017 Mercedes-Benz A-Class MOT pass rate and common faults

40,660 MOT tests in 2024. 80.2% passed first time, compared with 79.8% for all cars the same age.

100About average
Passed first time80.2%
Failed or needed repairs19.8%
Typical mileage at test55,000

Most common reasons for failing

Share of all 40,660 tests where this item caused a failure.

  1. Tread depth below requirements of 1.6mm2.5%
    1,559 marked dangerous
  2. Coil spring: fractured or broken1.8%
  3. Tyres - condition: has ply or cords exposed1.8%
    1,018 marked dangerous
  4. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords1.7%
  5. Brake pads: less than 1.5 mm thick1.7%
    934 marked dangerous
  6. Malfunction indicator lamp: inoperative or indicates a malfunction1.4%
  7. Tyres - condition: has a bulge, caused by separation or partial failure of its structure1.3%
    641 marked dangerous
  8. Washers: provides insufficient washer liquid1.1%
  9. Wipers: does not clear the windscreen effectively0.8%
  10. Tyres - condition: has a tear, caused by separation or partial failure of its structure0.8%
    452 marked dangerous

Problem areas

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

  1. Tyres10.0%
  2. Lights & electrics4.4%
  3. Brakes3.9%
  4. Visibility (wipers, screen, mirrors)3.7%
  5. Suspension3.1%
  6. Emissions & leaks1.9%
  7. Wheels0.7%
  8. Number plates & VIN0.4%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm17.1%
  2. Tyres - condition: has a tear, caused by separation or partial failure of its structure10.7%
  3. Brake pads: less than 1.5 mm thick9.2%
  4. Brake discs: in such a condition that it is seriously weakened8.2%
  5. Brake discs: significantly and obviously worn4.3%

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: tread depth below requirements of 1.6mm. 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 2017 Mercedes-Benz A-Class?

In 2024, 80.2% of 2017 Mercedes-Benz A-Class cars passed their MOT first time, across 40,660 tests. The average for all 7-year-old cars was 79.8%.

What are the most common MOT failures on a 2017 Mercedes-Benz A-Class?

The most common failure reasons were tread depth below requirements of 1.6mm; coil spring: fractured or broken; tyres - condition: has ply or cords exposed. The biggest problem area was tyres.

Is the 2017 Mercedes-Benz A-Class reliable at MOT time?

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