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Mercedes-benz CL 500 - 2009

189.0 faults per 100 tests
Year average for all cars of 2009 is 311.0 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz CL 500, model year 2009. Sample size: 182 cars, 429 tests and 811 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 182 cars

The 2009 Mercedes-Benz CL 500 has an overall defect rate of 189 per 100 vehicles, which is significantly lower than the yearly average of 310 per 100, making it 39% better in terms of reliability. Notably, the model performs exceptionally well in categories such as Lights & Electrics, where it has only 13 defects per 100 vehicles compared to the average of 80, and in Body/Structure, with just 8 defects versus 40. Additionally, it shows improved performance in Wheels, Suspensions & Axles, and Equipment, with a total absence of defects in the latter. However, the defect rate increases with mileage, peaking in the lower mileage segment at 475 defects per 100 vehicles, suggesting that early-stage models may require more attention. Overall, the CL 500 stands out positively against its peers in several key areas.

Cars by mileage segment

Total: 182 cars

Categories

Brakes
▲ 4.3% better
112.4 faults / 100 tests
Year avg: 117.5 / 100 tests
  • Brake pipe damaged or excessively corroded
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake lining or pad: worn below 1.5mm
Steering
▲ 14.1% better
14.0 faults / 100 tests
Year avg: 16.3 / 100 tests
  • Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 14.5% better
20.0 faults / 100 tests
Year avg: 23.4 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
Lights & Electrics
▲ 84.4% better
12.6 faults / 100 tests
Year avg: 80.9 / 100 tests
Wheels & Suspension
▲ 33.9% better
198.1 faults / 100 tests
Year avg: 299.8 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A suspension pin, bush, joint or bearing: excessively worn
  • A shock absorber damaged … or showing signs of severe leakage
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • A wheel bearing: with excessive play
Body/Structure
▲ 81.0% better
7.9 faults / 100 tests
Year avg: 41.5 / 100 tests
Equipment
▲ 100.0% better
0.0 faults / 100 tests
Year avg: 8.3 / 100 tests
Other
▲ 61.9% better
13.1 faults / 100 tests
Year avg: 34.4 / 100 tests

Fault rate by mileage segment

Model    Year average
0 475 0–31,000 mi 31,000–62,000 62,000–93,000 93,000–124,000 124,000+
* Metric: faults per 100 tests.

Most common faults (Top 10)

Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 132
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 77
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 74
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 62
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 48
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 44
A wheel bearing: with excessive play
ADVISORY
Occurrences: 32
Steering rack gaiter or ball joint dust cover: damaged or deteriorated
MINOR
Occurrences: 28
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 24
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 24

Serious faults (Top 10)

Parking brake inoperative on one side, or in the case of testing on the road, the vehicle deviates excessively from a straight line
FAIL
Occurrences: 9
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 9
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 9
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 7
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 7
Parking brake efficiency: less than 50% of the required value
FAIL
Occurrences: 7
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 7
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 7
An obvious leak from any part of the system
FAIL
Occurrences: 6
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 6