Skip to main content

Mercedes-benz A-CLASS - 2018

102.8 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 A-CLASS, model year 2018. Sample size: 45,833 cars, 102,848 tests and 105,751 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 45,833 cars

The 2018 Mercedes-Benz A-Class has an overall defect rate of 103 per 100 vehicles, which is 14% 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 defect rates significantly below the average. However, it shows a higher incidence of issues related to equipment compared to the average vehicle. Mileage trends indicate an increasing defect rate as mileage rises, but the A-Class remains below the average at all mileage intervals.

Cars by mileage segment

Total: 45,833 cars

More model years for Mercedes-benz A-CLASS

1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

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
▲ 9.6% better
62.2 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
▲ 84.0% better
0.8 faults / 100 tests
Year avg: 5.0 / 100 tests
Visibility
▲ 12.9% better
12.1 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
▲ 63.1% better
6.5 faults / 100 tests
Year avg: 17.6 / 100 tests
Wheels & Suspension
▲ 8.5% better
115.9 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
  • 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
Body/Structure
▲ 74.5% better
1.3 faults / 100 tests
Year avg: 5.1 / 100 tests
Equipment
▼ 40.9% worse
3.1 faults / 100 tests
Year avg: 2.2 / 100 tests
Other
▲ 47.1% better
3.7 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: 28,776
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 14,926
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 11,940
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 8,829
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 6,147
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 2,683
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 2,613
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 2,340
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 2,071
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 1,845

Serious faults (Top 10)

Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 2,683
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 2,613
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 1,845
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 1,495
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 1,001
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 875
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 736
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 713
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 437
Brake disc or drum: significantly and obviously worn
FAIL
Occurrences: 406