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Mercedes-benz B-CLASS - 2019

75.0 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-CLASS, model year 2019. Sample size: 606 cars, 1,343 tests and 1,007 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 606 cars

The 2019 Mercedes-Benz B-Class shows a significantly lower overall defect rate of 75 per 100 vehicles, compared to the average of 106 per 100, indicating a 29% improvement. Mileage data reveals that defect rates increase with mileage, with the model exhibiting higher defect rates in the lower mileage brackets compared to the yearly average. The B-Class excels in several areas, particularly in brakes (36% vs. 60% average) and steering (2% vs. 3% average), reflecting its reliability in these categories. However, it has a slightly higher rate of equipment defects at 2% compared to the average of 2%, which may merit attention.

Cars by mileage segment

Total: 606 cars

More model years for Mercedes-benz B-CLASS

2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

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
▲ 41.8% better
36.3 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
▲ 42.9% better
1.6 faults / 100 tests
Year avg: 2.8 / 100 tests
Visibility
▲ 34.1% better
9.1 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
▲ 36.9% better
9.4 faults / 100 tests
Year avg: 14.9 / 100 tests
  • The aim of a headlamp is not within limits laid down in the requirements
Wheels & Suspension
▲ 21.1% better
89.1 faults / 100 tests
Year avg: 112.9 / 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 lump, bulge or tear … or with cords exposed or damaged
  • A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
Body/Structure
▲ 71.4% better
1.0 faults / 100 tests
Year avg: 3.5 / 100 tests
Equipment
▼ 33.3% worse
2.4 faults / 100 tests
Year avg: 1.8 / 100 tests
Other
▲ 80.4% better
1.0 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)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 218
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 217
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 115
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 52
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 45
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 28
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 26
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 25
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 20
The aim of a headlamp is not within limits laid down in the requirements
PRS
Occurrences: 18

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 26
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 25
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 17
A rear registration plate lamp or light source missing or inoperative: when rear registration plate has only one lamp or all lamps not working
FAIL
Occurrences: 15
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 9
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 8
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 5
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 4
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 3
Reflector: missing or reflecting white to the rear
FAIL
Occurrences: 3