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Mercedes-benz CLA - 2018

106.8 faults per 100 tests
Year average for all cars of 2018 is 123.2 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz CLA, model year 2018. Sample size: 9,688 cars, 23,026 tests and 24,596 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 9,688 cars

The 2018 Mercedes-Benz CLA shows a lower overall defect rate compared to the yearly average, with 107 defects per 100 vehicles against 120 for similar cars, marking an 11% improvement. The model performs particularly well in steering, lights and electrics, body structure, equipment, and other categories, with significantly fewer defects than average. However, as mileage increases, defect rates rise sharply, especially in the higher mileage brackets, where it exceeds average figures. Overall, the CLA demonstrates strong reliability in specific areas while still reflecting common trends associated with increased wear over time.

Cars by mileage segment

Total: 9,688 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
▲ 7.3% better
63.8 faults / 100 tests
Year avg: 68.8 / 100 tests
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
  • Brake lining or pad: worn below 1.5mm
  • Brake disc or drum: significantly and obviously worn
Steering
▲ 70.0% better
1.5 faults / 100 tests
Year avg: 5.0 / 100 tests
Visibility
▲ 14.4% better
11.9 faults / 100 tests
Year avg: 13.9 / 100 tests
Lights & Electrics
▲ 41.5% better
10.3 faults / 100 tests
Year avg: 17.6 / 100 tests
Wheels & Suspension
▲ 6.1% better
119.0 faults / 100 tests
Year avg: 126.7 / 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
  • A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
  • Tyre tread depth not in accordance with the requirements
Body/Structure
▲ 60.8% better
2.0 faults / 100 tests
Year avg: 5.1 / 100 tests
Equipment
▲ 50.0% better
1.1 faults / 100 tests
Year avg: 2.2 / 100 tests
Other
▲ 44.3% better
3.9 faults / 100 tests
Year avg: 7.0 / 100 tests

Fault rate by mileage segment

Model    Year average
0 307 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: 6,188
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 2,962
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 2,635
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 2,329
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 1,256
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 973
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 796
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 541
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 438
A wheel: badly distorted or wear between wheel and hub at spigot mounting
ADVISORY
Occurrences: 431

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 973
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 541
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 438
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 302
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 275
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 164
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 157
Any fracture or welding defect on a wheel
FAIL
Occurrences: 142
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 132
Brake disc or drum: significantly and obviously worn
FAIL
Occurrences: 111