2009 · 15 years old at test · Diesel mostly

2009 Mercedes-Benz GL MOT pass rate and common faults

184 MOT tests in 2024. 69.0% passed first time, compared with 58.4% for all cars the same age.

118Well above average
Passed first time69.0%
Failed or needed repairs31.0%
Typical mileage at test119,000

Most common reasons for failing

Share of all 184 tests where this item caused a failure.

  1. Side repeaters: not working7.6%
  2. Tread depth below requirements of 1.6mm3.3%
    12 marked dangerous
  3. Position lamp: not working2.7%
  4. Malfunction indicator lamp: inoperative or indicates a malfunction2.2%
  5. Stop lamp: not working2.2%
  6. Decelerometer (sp): efficiency below requirements2.2%
  7. Shock absorbers: has a serious fluid leak2.2%
  8. Tyres - condition: has ply or cords exposed2.2%
    5 marked dangerous
  9. Rigid brake pipes: excessively corroded1.6%
  10. On or after 01/07/2008: emissions exceed manufacturer's specified limit1.6%

Problem areas

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

  1. Lights & electrics25.0%
  2. Brakes11.4%
  3. Tyres7.6%
  4. Emissions & leaks7.1%
  5. Suspension3.8%
  6. Seat belts & airbags2.7%
  7. Body & chassis2.2%
  8. Steering1.1%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Engine oil leaks: leaking excessively from engine21.7%
  2. Tread depth below requirements of 1.6mm20.7%
  3. Rigid brake pipes: excessively corroded17.4%
  4. Shock absorbers: has a serious fluid leak9.2%
  5. Brake discs: in such a condition that it is seriously weakened6.5%

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: side repeaters: not working. 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 2009 Mercedes-Benz GL?

In 2024, 69.0% of 2009 Mercedes-Benz GL cars passed their MOT first time, across 184 tests. The average for all 15-year-old cars was 58.4%.

What are the most common MOT failures on a 2009 Mercedes-Benz GL?

The most common failure reasons were side repeaters: not working; tread depth below requirements of 1.6mm; position lamp: not working. The biggest problem area was lights & electrics.

Is the 2009 Mercedes-Benz GL reliable at MOT time?

Its MOT Rank score is 118, which is well above average for a car of its age (100 means exactly average).