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Mercedes-benz B - 2020

67.9 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 B, model year 2020. Sample size: 2,994 cars, 6,690 tests and 4,540 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 2,994 cars

The 2020 Mercedes-Benz B model has an overall defect rate of 68 per 100 vehicles, which is significantly lower than the average of 90 defects per 100 vehicles for cars of the same year, making it 24% better than average. Notably, the model excels in categories such as brakes, steering, and visibility, with defects in these areas being markedly less common compared to average figures. However, the model shows a higher incidence of defects in the equipment category. Mileage trends indicate an increasing defect rate with higher mileage, although the model maintains a relatively strong performance across all mileage segments.

Cars by mileage segment

Total: 2,994 cars

More model years for Mercedes-benz B

2019 2020 2021 2022

Other models from Mercedes-benz

Mercedes-benz 190 E Mercedes-benz 300 Mercedes-benz A Mercedes-benz A 180 AMG LINE Mercedes-benz A 180 SPORT Mercedes-benz A 200 Mercedes-benz A 250 AMG LINE Mercedes-benz A-CLASS Mercedes-benz B Mercedes-benz B-CLASS Mercedes-benz C Mercedes-benz CITAN Mercedes-benz CL Mercedes-benz CL 500 Mercedes-benz CLA Mercedes-benz CLC Mercedes-benz CLK Mercedes-benz CLS Mercedes-benz E Mercedes-benz E 220 AMG Mercedes-benz EQA 250 AMG LINE Mercedes-benz EQC 400 AMG LINE Mercedes-benz ESPRINTER Mercedes-benz EVITO Mercedes-benz G Mercedes-benz G-CLASS Mercedes-benz GL Mercedes-benz GLA Mercedes-benz GLA 180 AMG LINE Mercedes-benz GLA 200 AMG LINE Mercedes-benz GLA 250 AMG LINE Mercedes-benz GLA 250 EXCLUSIVE Mercedes-benz GLB 200 AMG LINE Mercedes-benz GLB 220 AMG LINE Mercedes-benz GLC Mercedes-benz GLC 300 AMG Mercedes-benz GLC 300 AMG LINE Mercedes-benz GLE Mercedes-benz GLS Mercedes-benz GT Mercedes-benz ML Mercedes-benz R-Class Mercedes-benz S-Class Mercedes-benz SL Mercedes-benz SLC Mercedes-benz SLK Mercedes-benz SPRINTER Mercedes-benz V Mercedes-benz VIANO Mercedes-benz VITO Mercedes-benz X

Categories

Brakes
▲ 41.7% better
29.6 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
▲ 86.7% better
0.2 faults / 100 tests
Year avg: 1.5 / 100 tests
Visibility
▲ 31.9% better
9.6 faults / 100 tests
Year avg: 14.1 / 100 tests
  • Wiper blade: defective
Lights & Electrics
▲ 60.7% better
4.4 faults / 100 tests
Year avg: 11.2 / 100 tests
Wheels & Suspension
▲ 8.8% better
88.9 faults / 100 tests
Year avg: 97.5 / 100 tests
  • 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 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
  • A suspension pin, bush, joint or bearing: excessively worn
Body/Structure
▲ 75.0% better
0.6 faults / 100 tests
Year avg: 2.4 / 100 tests
Equipment
▼ 26.7% worse
1.9 faults / 100 tests
Year avg: 1.5 / 100 tests
Other
▲ 83.8% better
0.6 faults / 100 tests
Year avg: 3.7 / 100 tests

Fault rate by mileage segment

Model    Year average
0 273 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)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 1,086
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 1,057
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 444
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 236
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 219
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 203
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 174
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 146
Wiper blade: defective
MINOR
Occurrences: 133
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 110

Serious faults (Top 10)

A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 174
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 110
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 54
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 42
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 24
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 22
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 17
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 14
Seat belt buckle missing, damaged or not functioning as intended
FAIL
Occurrences: 13
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 11