2007 · 17 years old at test · Diesel mostly

2007 Mercedes-Benz B-Class MOT pass rate and common faults

2,665 MOT tests in 2024. 55.4% passed first time, compared with 56.9% for all cars the same age.

97Below average
Passed first time55.4%
Failed or needed repairs44.6%
Typical mileage at test100,000

Most common reasons for failing

Share of all 2,665 tests where this item caused a failure.

  1. Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt8.0%
  2. Coil spring: fractured or broken7.1%
  3. Suspension arms - ball joint: ball joint excessively worn5.1%
  4. Washers: provides insufficient washer liquid4.3%
  5. Rigid brake pipes: excessively corroded3.9%
  6. Rbt (sp): efficiency below requirements3.2%
  7. Stop lamp: not working3.0%
  8. Shock absorbers: has a serious fluid leak2.4%
  9. Malfunction indicator lamp: inoperative or indicates a malfunction2.4%
  10. Brake pads: less than 1.5 mm thick2.4%
    103 marked dangerous

Problem areas

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

  1. Lights & electrics24.8%
  2. Brakes24.8%
  3. Suspension22.9%
  4. Body & chassis12.3%
  5. Visibility (wipers, screen, mirrors)11.8%
  6. Tyres7.7%
  7. Emissions & leaks5.3%
  8. Seat belts & airbags3.1%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Rigid brake pipes: excessively corroded19.7%
  2. Tread depth below requirements of 1.6mm17.8%
  3. Brake discs: in such a condition that it is seriously weakened13.8%
  4. Tyres - condition: has a tear, caused by separation or partial failure of its structure10.7%
  5. Brake pads: less than 1.5 mm thick8.2%

What this means if you are buying one

This model year fails more often than most cars its age, so budget for repairs and check the history carefully. Before buying, check the area that fails most: joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt. 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 2007 Mercedes-Benz B-Class?

In 2024, 55.4% of 2007 Mercedes-Benz B-Class cars passed their MOT first time, across 2,665 tests. The average for all 17-year-old cars was 56.9%.

What are the most common MOT failures on a 2007 Mercedes-Benz B-Class?

The most common failure reasons were joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt; coil spring: fractured or broken; suspension arms - ball joint: ball joint excessively worn. The biggest problem area was lights & electrics.

Is the 2007 Mercedes-Benz B-Class reliable at MOT time?

Its MOT Rank score is 97, which is below average for a car of its age (100 means exactly average).