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Mercedes-benz A - 2018

108.2 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 A, model year 2018. Sample size: 974 cars, 2,271 tests and 2,457 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 974 cars

The 2018 Mercedes-Benz A model has an overall defect rate of 108 per 100 vehicles, which is 10% lower than the average for cars of the same year. Notably, this model performs exceptionally well in categories such as steering, lights and electrics, and body/structure, with significantly fewer defects compared to the average. However, it has a higher incidence of issues related to equipment, nearly double the average rate. As mileage increases, defect rates for both the model and the average vehicle rise, indicating a common trend. Overall, the Mercedes-Benz A stands out for its reliability in key areas, while also showing some specific weaknesses.

Cars by mileage segment

Total: 974 cars

More model years for Mercedes-benz A

2018 2019 2020 2021 2022

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
▲ 9.9% better
62.0 faults / 100 tests
Year avg: 68.8 / 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
  • Brake lining or pad: worn below 1.5mm
Steering
▲ 82.0% better
0.9 faults / 100 tests
Year avg: 5.0 / 100 tests
Visibility
▲ 4.3% better
13.3 faults / 100 tests
Year avg: 13.9 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
Lights & Electrics
▲ 56.3% better
7.7 faults / 100 tests
Year avg: 17.6 / 100 tests
Wheels & Suspension
▲ 7.1% better
117.7 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 cut in excess of the requirements deep enough to reach the ply or cords
  • Tyre tread depth not in accordance with the requirements
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
Body/Structure
▲ 37.3% better
3.2 faults / 100 tests
Year avg: 5.1 / 100 tests
Equipment
▼ 118.2% worse
4.8 faults / 100 tests
Year avg: 2.2 / 100 tests
Other
▲ 4.3% better
6.7 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: 671
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 347
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 284
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 189
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 114
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 69
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 68
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 55
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 51
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 43

Serious faults (Top 10)

Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 68
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 51
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 43
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 42
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 31
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 26
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 19
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 13
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 11
Brake disc or drum: significantly and obviously worn
FAIL
Occurrences: 10