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Mercedes-benz CLA - 2021

83.8 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 CLA, model year 2021. Sample size: 10,864 cars, 25,396 tests and 21,277 recorded faults.
0%
More faults compared to the average car of same model year

Quick summary

Total: 10,864 cars

The 2021 Mercedes-Benz CLA has an overall defect rate of 84 defects per 100 vehicles, which is higher than the average of 79 defects for cars from the same year, representing a 6.6% increase. Notably, this model shows significantly better performance in categories such as Lights & Electrics, Body/Structure, and Equipment, with defect rates much lower than average. However, it does face a higher incidence of issues related to Wheels, Suspensions & Axles, surpassing the average by 22.7%. Mileage trends indicate that defect rates increase with mileage, particularly in the higher mileage categories. Overall, while the CLA excels in several areas, its higher defect rate in suspension-related issues may warrant attention.

Cars by mileage segment

Total: 10,864 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
▲ 3.5% better
38.6 faults / 100 tests
Year avg: 40.0 / 100 tests
  • Brake lining or pad: worn below 1.5mm
  • Brake disc or drum: significantly and obviously worn
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
Steering
▲ 0.0% better
0.7 faults / 100 tests
Year avg: 0.7 / 100 tests
Visibility
▲ 14.5% better
12.4 faults / 100 tests
Year avg: 14.5 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
  • Wiper blade: defective
Lights & Electrics
▲ 36.6% better
7.1 faults / 100 tests
Year avg: 11.2 / 100 tests
Wheels & Suspension
▼ 21.9% worse
106.4 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 cut in excess of the requirements deep enough to reach the ply or cords
  • 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
Body/Structure
▲ 81.0% better
0.4 faults / 100 tests
Year avg: 2.1 / 100 tests
Equipment
▲ 33.3% better
1.0 faults / 100 tests
Year avg: 1.5 / 100 tests
Other
▲ 66.7% better
0.9 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: 5,552
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 4,580
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 2,212
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 983
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 921
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 720
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 689
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 635
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 513
Wiper blade: defective
MINOR
Occurrences: 453

Serious faults (Top 10)

A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 720
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 635
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 423
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 296
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 168
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 123
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 114
Brake lining or pad: worn down to wear indicator
FAIL
Occurrences: 95
Lamp not securely attached
FAIL
Occurrences: 90
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 82