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Mercedes-benz CLS - 2017

103.8 faults per 100 tests
Year average for all cars of 2017 is 137.4 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz CLS, model year 2017. Sample size: 1,768 cars, 4,234 tests and 4,396 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 1,768 cars

The 2017 Mercedes-Benz CLS exhibits a lower overall defect rate compared to the average car of the same year, with 104 defects per 100 vehicles versus 134. The model shows a notable increase in defects related to mileage, particularly in higher mileage brackets, peaking at 240 defects per 100 vehicles for those over 124,000 miles. It stands out positively in several categories, particularly in brakes and steering, where it shows significantly fewer defects compared to the average. Additionally, the CLS performs exceptionally well in visibility, lights and electrics, and body structure, with defect rates well below those of the average vehicle.

Cars by mileage segment

Total: 1,768 cars

Categories

Brakes
▲ 23.4% better
55.5 faults / 100 tests
Year avg: 72.5 / 100 tests
  • Brake lining or pad: worn below 1.5mm
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake disc or drum: significantly and obviously worn
Steering
▲ 96.4% better
0.2 faults / 100 tests
Year avg: 5.6 / 100 tests
Visibility
▲ 55.2% better
6.5 faults / 100 tests
Year avg: 14.5 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
Lights & Electrics
▲ 72.5% better
5.6 faults / 100 tests
Year avg: 20.4 / 100 tests
Wheels & Suspension
▲ 7.2% better
132.8 faults / 100 tests
Year avg: 143.1 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • A wheel bearing: with excessive play
  • A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
Body/Structure
▲ 82.9% better
1.2 faults / 100 tests
Year avg: 7.0 / 100 tests
Equipment
▲ 85.2% better
0.4 faults / 100 tests
Year avg: 2.7 / 100 tests
Other
▲ 38.9% better
5.5 faults / 100 tests
Year avg: 9.0 / 100 tests

Fault rate by mileage segment

Model    Year average
0 318 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: 1,118
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 431
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 361
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 355
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 228
A wheel bearing: with excessive play
ADVISORY
Occurrences: 208
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 187
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 159
A wheel: badly distorted or wear between wheel and hub at spigot mounting
ADVISORY
Occurrences: 121
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 98

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 228
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 90
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 90
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 86
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 46
Any fracture or welding defect on a wheel
FAIL
Occurrences: 44
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 29
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 23
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 19
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: 14