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Mercedes-benz S-CLASS - 2019

58.7 faults per 100 tests
Year average for all cars of 2019 is 108.6 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz S-CLASS, model year 2019. Sample size: 2,345 cars, 6,694 tests and 3,927 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 2,345 cars

The 2019 Mercedes-Benz S-Class has an overall defect rate of approximately 59 per 100 vehicles, which is significantly lower than the yearly average of 106 defects per 100 cars, representing a 45% improvement. Notably, the S-Class excels in categories such as brakes, steering, visibility, and lights and electrics, with defect rates well below the average for its year. Mileage-related trends show that as mileage increases, defect rates also rise, but the S-Class consistently performs better than average across all mileage segments. Overall, this model demonstrates strong reliability, particularly in critical areas such as safety and functionality.

Cars by mileage segment

Total: 2,345 cars

Categories

Brakes
▲ 48.2% better
32.3 faults / 100 tests
Year avg: 62.4 / 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
▲ 96.4% better
0.1 faults / 100 tests
Year avg: 2.8 / 100 tests
Visibility
▲ 52.9% better
6.5 faults / 100 tests
Year avg: 13.8 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
Lights & Electrics
▲ 85.2% better
2.2 faults / 100 tests
Year avg: 14.9 / 100 tests
Wheels & Suspension
▲ 35.9% better
72.4 faults / 100 tests
Year avg: 112.9 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A suspension pin, bush, joint or bearing: excessively worn
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • Tyre tread depth not in accordance with the requirements
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
Body/Structure
▲ 71.4% better
1.0 faults / 100 tests
Year avg: 3.5 / 100 tests
Equipment
▲ 55.6% better
0.8 faults / 100 tests
Year avg: 1.8 / 100 tests
Other
▲ 58.8% better
2.1 faults / 100 tests
Year avg: 5.1 / 100 tests

Fault rate by mileage segment

Model    Year average
0 289 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: 1,352
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 431
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 324
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 290
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 260
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 152
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 121
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 117
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 112
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 108

Serious faults (Top 10)

Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 121
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 117
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 79
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 73
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 30
Any fracture or welding defect on a wheel
FAIL
Occurrences: 19
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 18
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 16
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 16
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 14