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Mercedes-benz CLA - 2020

91.1 faults per 100 tests
Year average for all cars of 2020 is 91.3 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz CLA, model year 2020. Sample size: 8,958 cars, 20,335 tests and 18,524 recorded faults.
0%
More faults compared to the average car of same model year

Quick summary

Total: 8,958 cars

The 2020 Mercedes-Benz CLA shows a slightly higher overall defect rate of 91 defects per 100 vehicles compared to the average of 90 defects per 100. It particularly stands out positively in categories such as Steering, Body/Structure, and Lights & Electrics, all of which have significantly lower defect rates compared to the average for the year. Notably, the CLA experiences a higher defect rate in the 0–31,000 mile segment, but this trend decreases with higher mileage, suggesting improved reliability as the vehicle ages. Overall, while tyre wear is a common issue, the model performs better than average in several critical areas.

Cars by mileage segment

Total: 8,958 cars

More model years for Mercedes-benz CLA

2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023

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
▲ 6.5% better
47.5 faults / 100 tests
Year avg: 50.8 / 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
▲ 66.7% better
0.5 faults / 100 tests
Year avg: 1.5 / 100 tests
Visibility
▲ 17.0% better
11.7 faults / 100 tests
Year avg: 14.1 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
Lights & Electrics
▲ 26.8% better
8.2 faults / 100 tests
Year avg: 11.2 / 100 tests
Wheels & Suspension
▼ 12.4% worse
109.6 faults / 100 tests
Year avg: 97.5 / 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 tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
Body/Structure
▲ 54.2% better
1.1 faults / 100 tests
Year avg: 2.4 / 100 tests
Equipment
▲ 0.0% better
1.5 faults / 100 tests
Year avg: 1.5 / 100 tests
Other
▲ 43.2% better
2.1 faults / 100 tests
Year avg: 3.7 / 100 tests

Fault rate by mileage segment

Model    Year average
0 273 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: 4,774
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 3,460
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 2,065
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 994
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 965
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 571
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 515
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 495
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 494
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 388

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 515
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 495
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 363
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 312
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 116
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 100
Brake lining or pad: worn down to wear indicator
FAIL
Occurrences: 99
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 92
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 80
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 72