2015 · 9 years old at test · Diesel mostly

2015 Mercedes-Benz GL MOT pass rate and common faults

622 MOT tests in 2024. 82.6% passed first time, compared with 73.5% for all cars the same age.

112Well above average
Passed first time82.6%
Failed or needed repairs17.4%
Typical mileage at test78,000

Most common reasons for failing

Share of all 622 tests where this item caused a failure.

  1. Tread depth below requirements of 1.6mm4.0%
    57 marked dangerous
  2. Tyres - condition: has ply or cords exposed2.3%
    22 marked dangerous
  3. Malfunction indicator lamp: inoperative or indicates a malfunction2.3%
  4. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords1.9%
  5. Tyres - condition: has a bulge, caused by separation or partial failure of its structure1.1%
    8 marked dangerous
  6. Shock absorbers: has a serious fluid leak1.0%
  7. Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt1.0%
  8. Brake pads: less than 1.5 mm thick0.8%
    5 marked dangerous
  9. Stop lamp: not working0.6%

Problem areas

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

  1. Tyres10.8%
  2. Lights & electrics4.8%
  3. Emissions & leaks2.6%
  4. Brakes1.8%
  5. Body & chassis1.6%
  6. Suspension1.3%
  7. Seat belts & airbags1.1%
  8. Wheels1.0%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm15.9%
  2. Brake pads: less than 1.5 mm thick6.6%
  3. Brake discs: in such a condition that it is seriously weakened6.1%
  4. Brake discs: significantly and obviously worn4.3%
  5. Tread depth: tread pattern not visible over the whole tread area when minimum depth required is 1.0mm3.5%

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: 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 2015 Mercedes-Benz GL?

In 2024, 82.6% of 2015 Mercedes-Benz GL cars passed their MOT first time, across 622 tests. The average for all 9-year-old cars was 73.5%.

What are the most common MOT failures on a 2015 Mercedes-Benz GL?

The most common failure reasons were tread depth below requirements of 1.6mm; tyres - condition: has ply or cords exposed; malfunction indicator lamp: inoperative or indicates a malfunction. The biggest problem area was tyres.

Is the 2015 Mercedes-Benz GL reliable at MOT time?

Its MOT Rank score is 112, which is well above average for a car of its age (100 means exactly average).