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Mercedes-benz B-CLASS - 2008

324.4 faults per 100 tests
Year average for all cars of 2008 is 340.8 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 2008. Sample size: 3,606 cars, 8,314 tests and 26,972 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 3,606 cars

The 2008 Mercedes-Benz B-Class has an overall defect rate of 324 per 100 vehicles, which is slightly better than the average of 337 per 100 vehicles for its year, marking a 3.9% improvement. Notably, the B-Class excels in steering, with a failure rate of only 9 per 100 compared to the average of 18 per 100, and shows fewer issues with lights and electrics as well. However, it struggles with brakes, where the defect rate is significantly higher at 221 per 100 compared to the average of 135 per 100. As mileage increases, the defect rate for this model generally rises, but it remains competitive against its peers across various mileage segments.

Cars by mileage segment

Total: 3,606 cars

Categories

Brakes
▼ 65.9% worse
220.8 faults / 100 tests
Year avg: 133.1 / 100 tests
  • Brake pipe damaged or excessively corroded
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
  • Brake lining or pad: worn below 1.5mm
Steering
▲ 52.8% better
8.5 faults / 100 tests
Year avg: 18.0 / 100 tests
Visibility
▼ 7.9% worse
27.3 faults / 100 tests
Year avg: 25.3 / 100 tests
Lights & Electrics
▲ 33.1% better
61.7 faults / 100 tests
Year avg: 92.2 / 100 tests
Wheels & Suspension
▲ 23.2% better
238.2 faults / 100 tests
Year avg: 310.3 / 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 spring: or spring component fractured or seriously weakened
  • A shock absorber damaged … or showing signs of severe leakage
Body/Structure
▼ 25.3% worse
64.3 faults / 100 tests
Year avg: 51.3 / 100 tests
  • A transmission shaft constant velocity joint boot: severely deteriorated
Equipment
▼ 17.8% worse
11.9 faults / 100 tests
Year avg: 10.1 / 100 tests
Other
▲ 61.4% better
15.9 faults / 100 tests
Year avg: 41.2 / 100 tests

Fault rate by mileage segment

Model    Year average
0 481 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)

Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 2,934
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 2,206
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 1,588
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 1,513
A transmission shaft constant velocity joint boot: severely deteriorated
MINOR
Occurrences: 1,163
Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
ADVISORY
Occurrences: 986
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 895
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 781
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 757
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 740

Serious faults (Top 10)

A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 715
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 556
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 468
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 390
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 381
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 356
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 236
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 210
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 206
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 180