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Mercedes-benz C - 2012

225.7 faults per 100 tests
Year average for all cars of 2012 is 249.2 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz C, model year 2012. Sample size: 30,274 cars, 70,916 tests and 160,040 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 30,274 cars

The 2012 Mercedes-Benz C has an overall defect rate of 226 defects per 100 vehicles, which is 8% lower than the average for cars of the same year. While the model shows a higher incidence of brake issues, with 163 defects per 100 compared to the average of 107, it excels in several areas such as steering, visibility, and lights & electrics, each showing significantly lower defect rates than the average. Mileage-related trends indicate that defect rates increase with mileage, but the model consistently performs better than average across most mileage segments. Overall, this vehicle demonstrates strong reliability in critical categories, despite some concerns with its braking system.

Cars by mileage segment

Total: 30,274 cars

Categories

Brakes
▼ 56.8% worse
162.8 faults / 100 tests
Year avg: 103.8 / 100 tests
  • Brake pipe damaged or excessively corroded
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake lining or pad: worn below 1.5mm
Steering
▲ 84.8% better
2.0 faults / 100 tests
Year avg: 13.2 / 100 tests
Visibility
▲ 33.9% better
12.7 faults / 100 tests
Year avg: 19.2 / 100 tests
Lights & Electrics
▲ 70.9% better
18.0 faults / 100 tests
Year avg: 61.9 / 100 tests
Wheels & Suspension
▲ 8.6% better
223.4 faults / 100 tests
Year avg: 244.4 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A suspension pin, bush, joint or bearing: excessively worn
  • A suspension joint dust cover: severely deteriorated
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • A suspension pin, bush, joint or bearing: excessively worn
Body/Structure
▲ 78.6% better
5.6 faults / 100 tests
Year avg: 26.2 / 100 tests
Equipment
▲ 33.9% better
4.1 faults / 100 tests
Year avg: 6.2 / 100 tests
Other
▲ 3.4% better
22.8 faults / 100 tests
Year avg: 23.6 / 100 tests
  • Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users

Fault rate by mileage segment

Model    Year average
0 402 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: 23,065
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 22,143
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 11,539
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 10,190
A suspension joint dust cover: severely deteriorated
MINOR
Occurrences: 7,028
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 6,087
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 5,972
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 5,406
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 5,221
A wheel bearing: with excessive play
ADVISORY
Occurrences: 4,971

Serious faults (Top 10)

A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 5,221
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 3,681
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 3,179
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 2,384
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 2,187
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 1,735
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 1,194
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 857
Warning device shows system malfunction
FAIL
Occurrences: 785
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 784