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Mercedes-benz B-CLASS - 2017

104.0 faults per 100 tests
Year average for all cars of 2017 is 137.4 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 2017. Sample size: 5,999 cars, 12,793 tests and 13,300 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 5,999 cars

The 2017 Mercedes-Benz B-Class shows a lower overall defect rate compared to the average vehicle of the same year, with 104 defects per 100 compared to 134. Although the defect rate increases with mileage, it remains consistently lower than the yearly average across all mileage segments. Notably, this model excels in areas such as steering and body structure, with significantly fewer defects than average, indicating strong reliability in these categories. While tyre wear is mentioned, it is not a standout issue for this particular model, which demonstrates better performance overall in various other defect categories.

Cars by mileage segment

Total: 5,999 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
▲ 21.0% better
57.3 faults / 100 tests
Year avg: 72.5 / 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
▲ 91.1% better
0.5 faults / 100 tests
Year avg: 5.6 / 100 tests
Visibility
▲ 22.1% better
11.3 faults / 100 tests
Year avg: 14.5 / 100 tests
Lights & Electrics
▲ 27.5% better
14.8 faults / 100 tests
Year avg: 20.4 / 100 tests
  • A rear registration plate lamp or light source missing or inoperative: when rear registration plate has only one lamp or all lamps not working
  • 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
▲ 17.3% better
118.3 faults / 100 tests
Year avg: 143.1 / 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 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 suspension joint dust cover: severely deteriorated
Body/Structure
▲ 91.4% better
0.6 faults / 100 tests
Year avg: 7.0 / 100 tests
Equipment
▲ 59.3% better
1.1 faults / 100 tests
Year avg: 2.7 / 100 tests
Other
▲ 55.6% better
4.0 faults / 100 tests
Year avg: 9.0 / 100 tests

Fault rate by mileage segment

Model    Year average
0 318 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: 2,681
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 2,213
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 1,238
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 1,145
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 716
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 466
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 460
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: 282
A suspension joint dust cover: severely deteriorated
MINOR
Occurrences: 254
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: 242

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 460
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: 282
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 219
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 217
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 157
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 146
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 124
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 88
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 87
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 72