2015 · 9 years old at test · Diesel mostly

2015 Mercedes-Benz CLS MOT pass rate and common faults

2,796 MOT tests in 2024. 78.5% passed first time, compared with 73.5% for all cars the same age.

107Above average
Passed first time78.5%
Failed or needed repairs21.5%
Typical mileage at test78,000

Most common reasons for failing

Share of all 2,796 tests where this item caused a failure.

  1. Malfunction indicator lamp: inoperative or indicates a malfunction3.9%
  2. Tyres - condition: has ply or cords exposed3.1%
    119 marked dangerous
  3. Coil spring: fractured or broken2.7%
  4. Tread depth below requirements of 1.6mm2.2%
    120 marked dangerous
  5. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords2.1%
  6. Tyres - condition: has a tear, caused by separation or partial failure of its structure1.6%
    79 marked dangerous
  7. Tyres - condition: has a bulge, caused by separation or partial failure of its structure1.4%
    57 marked dangerous
  8. Brake pads: less than 1.5 mm thick0.8%
    40 marked dangerous
  9. Rbt (sp): efficiency below requirements0.8%

Problem areas

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

  1. Tyres12.3%
  2. Brakes5.0%
  3. Suspension4.8%
  4. Emissions & leaks4.1%
  5. Lights & electrics2.5%
  6. Wheels1.1%
  7. Visibility (wipers, screen, mirrors)1.0%
  8. Number plates & VIN0.6%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm16.2%
  2. Brake pads: less than 1.5 mm thick7.2%
  3. Brake discs: in such a condition that it is seriously weakened7.1%
  4. Wheel bearings: has excessive play3.7%
  5. Brake discs: significantly and obviously worn3.6%

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: malfunction indicator lamp: inoperative or indicates a malfunction. 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 CLS?

In 2024, 78.5% of 2015 Mercedes-Benz CLS cars passed their MOT first time, across 2,796 tests. The average for all 9-year-old cars was 73.5%.

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

The most common failure reasons were malfunction indicator lamp: inoperative or indicates a malfunction; tyres - condition: has ply or cords exposed; coil spring: fractured or broken. The biggest problem area was tyres.

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

Its MOT Rank score is 107, which is above average for a car of its age (100 means exactly average).