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Mercedes-benz G-CLASS - 2018

66.4 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 G-CLASS, model year 2018. Sample size: 390 cars, 961 tests and 638 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 390 cars

The 2018 Mercedes-Benz G-Class shows a significantly lower overall defect rate compared to the average vehicle of the same year, with 66 defects per 100 vehicles, which is 44.7% better than the yearly average of 120. Common issues related to tyre wear are not highlighted, but the model performs particularly well in categories such as brakes, lights, and body structure, with defect rates substantially lower than average. Conversely, the G-Class faces a notable challenge with steering defects, which are higher than the average for similar vehicles. Additionally, defect rates tend to increase with mileage, especially in the higher mileage brackets, but the G-Class remains competitive overall.

Cars by mileage segment

Total: 390 cars

More model years for Mercedes-benz G-CLASS

2013 2014 2015 2016 2017 2018 2019

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
▲ 61.6% better
26.4 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
Steering
▼ 220.0% worse
16.0 faults / 100 tests
Year avg: 5.0 / 100 tests
  • A steering ball joint: with excessive wear or free play
  • A steering ball joint: with excessive wear or free play
  • Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 2.9% better
13.5 faults / 100 tests
Year avg: 13.9 / 100 tests
  • Windscreen or window excessively tinted: but not adversely affecting driver’s view
Lights & Electrics
▲ 39.8% better
10.6 faults / 100 tests
Year avg: 17.6 / 100 tests
Wheels & Suspension
▲ 54.7% better
57.4 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
Body/Structure
▲ 84.3% better
0.8 faults / 100 tests
Year avg: 5.1 / 100 tests
Equipment
▲ 100.0% better
0.0 faults / 100 tests
Year avg: 2.2 / 100 tests
Other
▼ 12.9% worse
7.9 faults / 100 tests
Year avg: 7.0 / 100 tests
  • Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users

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: 129
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 66
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 54
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 39
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 34
Windscreen or window excessively tinted: but not adversely affecting driver’s view
MINOR
Occurrences: 28
A steering ball joint: with excessive wear or free play
ADVISORY
Occurrences: 25
A steering ball joint: with excessive wear or free play
FAIL
Occurrences: 17
Steering rack gaiter or ball joint dust cover: damaged or deteriorated
MINOR
Occurrences: 17
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 15

Serious faults (Top 10)

A steering ball joint: with excessive wear or free play
FAIL
Occurrences: 17
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 15
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 8
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 8
Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 7
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 5
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 5
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 4
Beam image obviously incorrect
FAIL
Occurrences: 4
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 4