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Mercedes-benz B - 2019

76.7 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 B, model year 2019. Sample size: 3,933 cars, 8,427 tests and 6,463 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 3,933 cars

The 2019 Mercedes-Benz B has an overall defect rate of 77 per 100 vehicles, which is significantly lower than the average of 106 per 100, marking a 28% improvement. This model exhibits fewer issues in critical areas like brakes, steering, visibility, lights, and body structure, all of which are notably better than the average for the same year. However, it does show a higher rate of defects related to equipment, which stands out as a concern. In terms of mileage, defects increase with distance driven, with the highest rates observed in the 62,000 to 93,000 miles bracket. Overall, the Mercedes-Benz B demonstrates a strong performance in most categories compared to its peers, particularly in safety-related areas.

Cars by mileage segment

Total: 3,933 cars

Categories

Brakes
▲ 47.1% better
33.0 faults / 100 tests
Year avg: 62.4 / 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
▲ 64.3% better
1.0 faults / 100 tests
Year avg: 2.8 / 100 tests
Visibility
▲ 39.1% better
8.4 faults / 100 tests
Year avg: 13.8 / 100 tests
  • Wiper blade: defective
Lights & Electrics
▲ 67.1% better
4.9 faults / 100 tests
Year avg: 14.9 / 100 tests
Wheels & Suspension
▲ 10.9% better
100.6 faults / 100 tests
Year avg: 112.9 / 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
  • A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
  • A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
Body/Structure
▲ 85.7% better
0.5 faults / 100 tests
Year avg: 3.5 / 100 tests
Equipment
▼ 105.6% worse
3.7 faults / 100 tests
Year avg: 1.8 / 100 tests
Other
▲ 74.5% better
1.3 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: 1,769
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 1,384
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 609
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 333
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 288
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 285
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 219
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 149
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 135
Wiper blade: defective
MINOR
Occurrences: 120

Serious faults (Top 10)

A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 149
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 135
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 93
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 82
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 46
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 41
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 38
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 19
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 16
Brake lining or pad: worn down to wear indicator
FAIL
Occurrences: 15