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Mercedes-benz GLS - 2020

72.2 faults per 100 tests
Year average for all cars of 2020 is 91.3 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz GLS, model year 2020. Sample size: 539 cars, 1,369 tests and 988 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 539 cars

The 2020 Mercedes-Benz GLS has an overall defect rate of 72 per 100 vehicles, which is significantly better than the average of 90 per 100 for cars of the same year, marking a 19.6% improvement. The model performs particularly well in categories such as brakes and steering, with defect rates considerably lower than average. Notably, it shows fewer issues in visibility, lights and electrics, and body structure as well. Mileage-related trends indicate that defects increase with higher mileage, but the GLS remains relatively robust across all mileage segments compared to its peers. Overall, this model stands out for its reliability in critical areas compared to the average vehicle.

Cars by mileage segment

Total: 539 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
▲ 38.8% better
31.1 faults / 100 tests
Year avg: 50.8 / 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
Steering
▲ 93.3% better
0.1 faults / 100 tests
Year avg: 1.5 / 100 tests
Visibility
▲ 57.4% better
6.0 faults / 100 tests
Year avg: 14.1 / 100 tests
Lights & Electrics
▲ 71.4% better
3.2 faults / 100 tests
Year avg: 11.2 / 100 tests
Wheels & Suspension
▼ 1.3% worse
98.8 faults / 100 tests
Year avg: 97.5 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A suspension pin, bush, joint or bearing: excessively worn
  • 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 cut in excess of the requirements deep enough to reach the ply or cords
Body/Structure
▲ 75.0% better
0.6 faults / 100 tests
Year avg: 2.4 / 100 tests
Equipment
▼ 20.0% worse
1.8 faults / 100 tests
Year avg: 1.5 / 100 tests
Other
▲ 32.4% better
2.5 faults / 100 tests
Year avg: 3.7 / 100 tests

Fault rate by mileage segment

Model    Year average
0 374 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: 321
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 113
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 105
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 51
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 49
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 43
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 41
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 41
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 36
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 31

Serious faults (Top 10)

A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 51
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 43
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 41
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 10
A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 8
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 6
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 5
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 5
Brake lining or pad: worn down to wear indicator
FAIL
Occurrences: 5
Lamp emitted colour, position or intensity not in accordance with the requirements
FAIL
Occurrences: 3