2018 · 6 years old at test · Petrol mostly

2018 Mercedes-Benz SLC MOT pass rate and common faults

1,469 MOT tests in 2024. 88.1% passed first time, compared with 82.5% for all cars the same age.

107Above average
Passed first time88.1%
Failed or needed repairs11.9%
Typical mileage at test26,000

Most common reasons for failing

Share of all 1,469 tests where this item caused a failure.

  1. Tyres - condition: has ply or cords exposed2.5%
    67 marked dangerous
  2. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords2.2%
  3. Tread depth below requirements of 1.6mm0.7%
    16 marked dangerous
  4. Anti-lock braking system: warning lamp indicates an ABS fault0.7%
  5. Malfunction indicator lamp: inoperative or indicates a malfunction0.6%
  6. Coil spring: fractured or broken0.6%
  7. Headlamp aim: too high0.5%
  8. Suspension arms - ball joint: ball joint excessively worn0.5%
  9. Electronic stability control: warning lamp indicates a fault0.5%
  10. Road Wheels - condition: fractured0.4%
    7 marked dangerous

Problem areas

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

  1. Tyres6.9%
  2. Suspension1.9%
  3. Brakes1.8%
  4. Lights & electrics1.7%
  5. Visibility (wipers, screen, mirrors)1.0%
  6. Emissions & leaks1.0%
  7. Wheels0.5%
  8. Number plates & VIN0.3%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm12.8%
  2. Tyres - condition: has a tear, caused by separation or partial failure of its structure9.3%
  3. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords4.6%
  4. Tyres - condition: has a bulge, caused by separation or partial failure of its structure2.2%
  5. Brake discs: in such a condition that it is seriously weakened1.8%

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 2018 Mercedes-Benz SLC?

In 2024, 88.1% of 2018 Mercedes-Benz SLC cars passed their MOT first time, across 1,469 tests. The average for all 6-year-old cars was 82.5%.

What are the most common MOT failures on a 2018 Mercedes-Benz SLC?

The most common failure reasons were tyres - condition: has ply or cords exposed; tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords; tread depth below requirements of 1.6mm. The biggest problem area was tyres.

Is the 2018 Mercedes-Benz SLC reliable at MOT time?

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