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Mercedes-benz X - 2020

80.0 faults per 100 tests
Year average for all cars of 2020 is 91.3 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz X, model year 2020. Sample size: 924 cars, 2,186 tests and 1,749 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 924 cars

The 2020 Mercedes-Benz X has an overall defect rate of 80 per 100 vehicles, which is 11% lower than the average for cars of the same year. Notably, this model shows better performance in steering issues and wheel, suspension, and axle defects compared to the average. However, it struggles significantly with lights and electrics, body structure, equipment, and other categories, showing higher defect rates than the yearly average in these areas. Mileage trends suggest increased defects with higher mileage, particularly beyond 124,000 miles.

Cars by mileage segment

Total: 924 cars

Categories

Brakes
▲ 13.0% better
44.2 faults / 100 tests
Year avg: 50.8 / 100 tests
  • Brake lining or pad: worn below 1.5mm
  • Brake disc or drum: significantly and obviously worn
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
Steering
▲ 40.0% better
0.9 faults / 100 tests
Year avg: 1.5 / 100 tests
Visibility
▼ 16.3% worse
16.4 faults / 100 tests
Year avg: 14.1 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
  • Wiper blade: defective
Lights & Electrics
▼ 48.2% worse
16.6 faults / 100 tests
Year avg: 11.2 / 100 tests
  • A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
Wheels & Suspension
▲ 32.5% better
65.8 faults / 100 tests
Year avg: 97.5 / 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 suspension pin, bush, joint or bearing: excessively worn
Body/Structure
▼ 95.8% worse
4.7 faults / 100 tests
Year avg: 2.4 / 100 tests
Equipment
▼ 220.0% worse
4.8 faults / 100 tests
Year avg: 1.5 / 100 tests
Other
▼ 81.1% worse
6.7 faults / 100 tests
Year avg: 3.7 / 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
0 300 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: 425
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 143
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 99
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 90
A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
MINOR
Occurrences: 73
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 69
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 60
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 55
Wiper blade: defective
MINOR
Occurrences: 45
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 38

Serious faults (Top 10)

Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 37
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 30
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 29
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 24
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 23
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 23
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 18
A door will not open using the relevant control or close properly
FAIL
Occurrences: 16
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
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 13