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Mercedes-benz GLS - 2017

81.8 faults per 100 tests
Year average for all cars of 2017 is 137.4 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz GLS, model year 2017. Sample size: 767 cars, 1,651 tests and 1,350 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 767 cars

The 2017 Mercedes-Benz GLS demonstrates a significantly lower overall defect rate compared to the average vehicle of the same year, with a rate of 82 defects per 100 vehicles versus the average of 134. Notably, this model excels in categories such as brakes and steering, showing defects at rates 46% and 100% lower than average, respectively. However, it has a higher incidence of body and structure issues, with defect rates exceeding the average by 44%. Mileage data suggests that as the GLS accumulates more miles, the defect rate increases, particularly in the highest mileage category, where it reaches 286 defects per 100 vehicles. Overall, while the GLS performs better in several key safety categories, attention may be needed for its body and structure as mileage increases.

Cars by mileage segment

Total: 767 cars

More model years for Mercedes-benz GLS

2016 2017 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
▲ 47.0% better
38.4 faults / 100 tests
Year avg: 72.5 / 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
▲ 100.0% better
0.0 faults / 100 tests
Year avg: 5.6 / 100 tests
Visibility
▲ 35.2% better
9.4 faults / 100 tests
Year avg: 14.5 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
Lights & Electrics
▲ 83.3% better
3.4 faults / 100 tests
Year avg: 20.4 / 100 tests
Wheels & Suspension
▲ 33.6% better
95.0 faults / 100 tests
Year avg: 143.1 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • 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
Body/Structure
▼ 31.4% worse
9.2 faults / 100 tests
Year avg: 7.0 / 100 tests
  • A transmission shaft constant velocity joint boot: severely deteriorated
Equipment
▼ 22.2% worse
3.3 faults / 100 tests
Year avg: 2.7 / 100 tests
Other
▲ 46.7% better
4.8 faults / 100 tests
Year avg: 9.0 / 100 tests

Fault rate by mileage segment

Model    Year average
0 318 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: 539
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 114
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 108
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 68
A transmission shaft constant velocity joint boot: severely deteriorated
MINOR
Occurrences: 57
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 51
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 51
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 43
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 41
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 31

Serious faults (Top 10)

Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 51
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 43
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 29
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 14
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 11
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 10
Brake lining or pad: worn down to wear indicator
FAIL
Occurrences: 6
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 6
A wheel: with a loose or missing wheel nut, bolt or stud
FAIL
Occurrences: 4
Any fracture or welding defect on a wheel
FAIL
Occurrences: 4