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Mercedes-benz GL - 2015

102.9 faults per 100 tests
Year average for all cars of 2015 is 174.5 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz GL, model year 2015. Sample size: 740 cars, 1,574 tests and 1,620 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 740 cars

The 2015 Mercedes-Benz GL has an overall defect rate of 103 defects per 100 vehicles, which is significantly better than the average of 170 defects per 100 for cars of the same year, marking a 40% improvement. This model performs particularly well in several key areas, such as brakes, steering, and lights, where it shows notably lower defect rates compared to the average. Although defect rates increase with mileage, the GL demonstrates a relatively consistent performance across all mileage segments, with the highest defect rate observed in the lowest mileage category. Overall, this model stands out for its reliability in critical safety and visibility categories.

Cars by mileage segment

Total: 740 cars

Categories

Brakes
▲ 41.8% better
49.3 faults / 100 tests
Year avg: 84.7 / 100 tests
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake disc or drum: significantly and obviously worn
  • Brake lining or pad: worn below 1.5mm
Steering
▲ 94.9% better
0.5 faults / 100 tests
Year avg: 9.9 / 100 tests
Visibility
▲ 41.6% better
9.4 faults / 100 tests
Year avg: 16.1 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
Lights & Electrics
▲ 71.6% better
8.8 faults / 100 tests
Year avg: 31.0 / 100 tests
Wheels & Suspension
▲ 37.1% better
112.1 faults / 100 tests
Year avg: 178.3 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • 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
Body/Structure
▼ 8.5% worse
12.7 faults / 100 tests
Year avg: 11.7 / 100 tests
  • A transmission shaft constant velocity joint boot: severely deteriorated
Equipment
▲ 42.5% better
2.3 faults / 100 tests
Year avg: 4.0 / 100 tests
Other
▲ 18.2% better
10.8 faults / 100 tests
Year avg: 13.2 / 100 tests
  • Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users

Fault rate by mileage segment

Model    Year average
0 342 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: 508
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 129
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 126
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 104
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 80
A transmission shaft constant velocity joint boot: severely deteriorated
MINOR
Occurrences: 79
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 59
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 57
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 53
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 52

Serious faults (Top 10)

Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 80
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 52
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 24
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 16
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 15
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 9
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 8
Stop lamp(s): all missing or inoperative
FAIL
Occurrences: 6
A wheel: with a loose or missing wheel nut, bolt or stud
FAIL
Occurrences: 6
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 6