2017 · 7 years old at test · Diesel mostly

2017 Mercedes-Benz GLC MOT pass rate and common faults

12,422 MOT tests in 2024. 84.6% passed first time, compared with 79.8% for all cars the same age.

106Above average
Passed first time84.6%
Failed or needed repairs15.4%
Typical mileage at test59,000

Most common reasons for failing

Share of all 12,422 tests where this item caused a failure.

  1. Suspension arms - ball joint: ball joint excessively worn4.3%
  2. Tread depth below requirements of 1.6mm2.2%
    500 marked dangerous
  3. Malfunction indicator lamp: inoperative or indicates a malfunction1.9%
  4. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords1.6%
  5. Tyres - condition: has ply or cords exposed1.3%
    217 marked dangerous
  6. Brake pads: less than 1.5 mm thick1.1%
    201 marked dangerous
  7. Coil spring: fractured or broken0.6%
  8. Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt0.6%
  9. Washers: provides insufficient washer liquid0.5%

Problem areas

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

  1. Tyres6.0%
  2. Suspension5.6%
  3. Brakes2.1%
  4. Emissions & leaks2.0%
  5. Visibility (wipers, screen, mirrors)1.5%
  6. Lights & electrics1.4%
  7. Body & chassis0.9%
  8. Number plates & VIN0.5%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm17.2%
  2. Brake pads: less than 1.5 mm thick8.8%
  3. Suspension arms - ball joint: ball joint excessively worn8.2%
  4. Brake discs: in such a condition that it is seriously weakened5.7%
  5. Tyres - condition: has a tear, caused by separation or partial failure of its structure4.3%

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: suspension arms - ball joint: ball joint excessively worn. 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 2017 Mercedes-Benz GLC?

In 2024, 84.6% of 2017 Mercedes-Benz GLC cars passed their MOT first time, across 12,422 tests. The average for all 7-year-old cars was 79.8%.

What are the most common MOT failures on a 2017 Mercedes-Benz GLC?

The most common failure reasons were suspension arms - ball joint: ball joint excessively worn; tread depth below requirements of 1.6mm; malfunction indicator lamp: inoperative or indicates a malfunction. The biggest problem area was tyres.

Is the 2017 Mercedes-Benz GLC reliable at MOT time?

Its MOT Rank score is 106, which is above average for a car of its age (100 means exactly average).