Skip to main content

Mercedes-benz GLA - 2020

89.9 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 GLA, model year 2020. Sample size: 1,415 cars, 3,141 tests and 2,825 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 1,415 cars

The 2020 Mercedes-Benz GLA has an overall defect rate of 90 per 100 vehicles, which is slightly above the average of 89 per 100. This model demonstrates particularly strong performance in the "Lights & Electrics" and "Body/Structure" categories, with defect rates well below the average, indicating fewer issues in these areas. Notably, the defect rate increases with mileage, particularly in the higher mileage brackets, suggesting that older vehicles may be more prone to defects. Overall, the GLA stands out positively compared to other cars of the same year, particularly in key areas that enhance its reliability.

Cars by mileage segment

Total: 1,415 cars

More model years for Mercedes-benz GLA

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
▼ 0.2% worse
50.9 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
  • Brake lining or pad: worn below 1.5mm
Steering
▲ 13.3% better
1.3 faults / 100 tests
Year avg: 1.5 / 100 tests
Visibility
▲ 18.4% better
11.5 faults / 100 tests
Year avg: 14.1 / 100 tests
  • Wiper blade: defective
Lights & Electrics
▲ 73.2% better
3.0 faults / 100 tests
Year avg: 11.2 / 100 tests
Wheels & Suspension
▼ 11.5% worse
108.7 faults / 100 tests
Year avg: 97.5 / 100 tests
  • 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
  • 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
▲ 29.2% better
1.7 faults / 100 tests
Year avg: 2.4 / 100 tests
Equipment
▲ 20.0% better
1.2 faults / 100 tests
Year avg: 1.5 / 100 tests
Other
▲ 54.1% better
1.7 faults / 100 tests
Year avg: 3.7 / 100 tests

Fault rate by mileage segment

Model    Year average
0 273 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)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 752
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 626
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 315
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 209
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 167
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 92
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 91
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 62
Wiper blade: defective
MINOR
Occurrences: 47
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 40

Serious faults (Top 10)

A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 92
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 91
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 62
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 29
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 25
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 23
Brake lining or pad: worn down to wear indicator
FAIL
Occurrences: 16
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 15
Excessive fluctuation in brake effort through each wheel revolution
FAIL
Occurrences: 7
5.2.3 (i) (i)
FAIL
Occurrences: 5