2017 · 7 years old at test · Petrol mostly

2017 Mercedes-Benz SLC MOT pass rate and common faults

3,379 MOT tests in 2024. 84.7% passed first time, compared with 79.8% for all cars the same age.

106Above average
Passed first time84.7%
Failed or needed repairs15.3%
Typical mileage at test32,000

Most common reasons for failing

Share of all 3,379 tests where this item caused a failure.

  1. Tyres - condition: has ply or cords exposed2.5%
    121 marked dangerous
  2. Suspension arms - ball joint: ball joint excessively worn2.3%
  3. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords1.7%
  4. Tread depth below requirements of 1.6mm1.4%
    80 marked dangerous
  5. Coil spring: fractured or broken1.2%
  6. Suspension arms - ball joint dust cover: ball joint dust cover no longer prevents the ingress of dirt1.0%
  7. Malfunction indicator lamp: inoperative or indicates a malfunction0.8%
  8. Anti-lock braking system: warning lamp indicates an ABS fault0.7%
  9. Tyres - condition: has a tear, caused by separation or partial failure of its structure0.5%
    38 marked dangerous
  10. Headlamp aim: too high0.5%

Problem areas

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

  1. Tyres7.6%
  2. Suspension5.4%
  3. Lights & electrics2.3%
  4. Brakes2.2%
  5. Emissions & leaks1.5%
  6. Visibility (wipers, screen, mirrors)0.7%
  7. Wheels0.7%
  8. Number plates & VIN0.3%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm14.6%
  2. Tyres - condition: has a tear, caused by separation or partial failure of its structure7.4%
  3. Brake discs: in such a condition that it is seriously weakened3.4%
  4. Brake pads: less than 1.5 mm thick3.1%
  5. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords3.1%

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: tyres - condition: has ply or cords exposed. 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 SLC?

In 2024, 84.7% of 2017 Mercedes-Benz SLC cars passed their MOT first time, across 3,379 tests. The average for all 7-year-old cars was 79.8%.

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

The most common failure reasons were tyres - condition: has ply or cords exposed; suspension arms - ball joint: ball joint excessively worn; tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords. The biggest problem area was tyres.

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

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