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Mercedes-benz C - 2021

74.5 faults per 100 tests
Year average for all cars of 2021 is 80.0 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz C, model year 2021. Sample size: 1,954 cars, 5,036 tests and 3,754 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 1,954 cars

The 2021 Mercedes-Benz C model has an overall defect rate of 75 per 100 vehicles, which is slightly better than the average for cars of the same year at 79 per 100. It excels in several categories, particularly in brakes, steering, and lights, showing significantly fewer defects compared to the average. However, it experiences higher issues in wheels and suspension, as well as body and structure concerns. Mileage trends indicate that the defect rate increases with mileage, particularly in the higher mileage brackets, although the model maintains a relatively strong performance in the lower mileage categories. Overall, while the Mercedes-Benz C demonstrates strengths in critical safety areas, it may require more attention in specific structural and suspension components compared to similar vehicles.

Cars by mileage segment

Total: 1,954 cars

More model years for Mercedes-benz C

1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021

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
▲ 40.8% better
23.7 faults / 100 tests
Year avg: 40.0 / 100 tests
  • Brake lining or pad: worn below 1.5mm
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
Steering
▲ 57.1% better
0.3 faults / 100 tests
Year avg: 0.7 / 100 tests
Visibility
▲ 29.0% better
10.3 faults / 100 tests
Year avg: 14.5 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
Lights & Electrics
▲ 55.4% better
5.0 faults / 100 tests
Year avg: 11.2 / 100 tests
  • The aim of a headlamp is not within limits laid down in the requirements
Wheels & Suspension
▼ 20.8% worse
105.5 faults / 100 tests
Year avg: 87.3 / 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 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
Body/Structure
▼ 42.9% worse
3.0 faults / 100 tests
Year avg: 2.1 / 100 tests
Equipment
▲ 60.0% better
0.6 faults / 100 tests
Year avg: 1.5 / 100 tests
Other
▲ 77.8% better
0.6 faults / 100 tests
Year avg: 2.7 / 100 tests

Fault rate by mileage segment

Model    Year average
0 268 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: 1,361
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 534
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 337
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 186
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 127
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 120
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 112
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 109
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 102
The aim of a headlamp is not within limits laid down in the requirements
PRS
Occurrences: 85

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 186
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 120
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 109
Any fracture or welding defect on a wheel
FAIL
Occurrences: 40
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 32
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 27
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 12
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 11
Brake lining or pad: worn down to wear indicator
FAIL
Occurrences: 8
Excessive fluctuation in brake effort through each wheel revolution
FAIL
Occurrences: 8