2011 · 13 years old at test · Diesel mostly

2011 Mercedes-Benz R-Class MOT pass rate and common faults

338 MOT tests in 2024. 73.4% passed first time, compared with 61.8% for all cars the same age.

119Well above average
Passed first time73.4%
Failed or needed repairs26.6%
Typical mileage at test116,000

Most common reasons for failing

Share of all 338 tests where this item caused a failure.

  1. Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt4.7%
  2. Tread depth below requirements of 1.6mm3.0%
    19 marked dangerous
  3. Rbt (sp): efficiency below requirements3.0%
  4. Malfunction indicator lamp: inoperative or indicates a malfunction2.7%
  5. Anti-lock braking system: warning lamp indicates an ABS fault1.8%
  6. Rigid brake pipes: excessively corroded1.8%
  7. Position lamp: not working1.5%
  8. Rigid brake pipes: leaking on a hydraulic braking system1.5%
    6 marked dangerous
  9. Stop lamp: not working1.5%
  10. Rbt (sp): efficiency less than 50% of the required value1.2%
    4 marked dangerous

Problem areas

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

  1. Brakes13.9%
  2. Lights & electrics9.8%
  3. Body & chassis6.2%
  4. Tyres5.3%
  5. Emissions & leaks4.4%
  6. Suspension2.1%
  7. Seat belts & airbags1.8%
  8. Visibility (wipers, screen, mirrors)1.5%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm16.9%
  2. Engine oil leaks: leaking excessively from engine16.3%
  3. Rigid brake pipes: excessively corroded12.1%
  4. Brake discs: in such a condition that it is seriously weakened8.3%
  5. Brake pads: less than 1.5 mm thick7.1%

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: 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 2011 Mercedes-Benz R-Class?

In 2024, 73.4% of 2011 Mercedes-Benz R-Class cars passed their MOT first time, across 338 tests. The average for all 13-year-old cars was 61.8%.

What are the most common MOT failures on a 2011 Mercedes-Benz R-Class?

The most common failure reasons were joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt; tread depth below requirements of 1.6mm; rbt (sp): efficiency below requirements. The biggest problem area was brakes.

Is the 2011 Mercedes-Benz R-Class reliable at MOT time?

Its MOT Rank score is 119, which is well above average for a car of its age (100 means exactly average).