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Mercedes-benz GLC - 2018

93.2 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 GLC, model year 2018. Sample size: 22,199 cars, 51,268 tests and 47,777 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 22,199 cars

The 2018 Mercedes-Benz GLC shows a significantly lower overall defect rate compared to the average car of the same year, with 93 defects per 100 vehicles versus 120. Notably, the GLC excels in several categories, particularly brakes, steering, and lights and electrics, where it performs better than the average by substantial margins. However, as mileage increases, defect rates rise more steeply for the GLC compared to average vehicles, peaking at 243 defects per 100 for those driven between 93,000 and 124,000 miles. Overall, this model demonstrates commendable reliability in key areas while facing increased challenges as mileage accumulates.

Cars by mileage segment

Total: 22,199 cars

More model years for Mercedes-benz GLC

2015 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
▲ 27.5% better
49.9 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
Steering
▲ 92.0% better
0.4 faults / 100 tests
Year avg: 5.0 / 100 tests
Visibility
▲ 30.9% better
9.6 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
▲ 82.4% better
3.1 faults / 100 tests
Year avg: 17.6 / 100 tests
Wheels & Suspension
▲ 9.9% better
114.1 faults / 100 tests
Year avg: 126.7 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A suspension pin, bush, joint or bearing: excessively worn
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • 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
Body/Structure
▲ 13.7% better
4.4 faults / 100 tests
Year avg: 5.1 / 100 tests
Equipment
▲ 27.3% better
1.6 faults / 100 tests
Year avg: 2.2 / 100 tests
Other
▲ 52.9% better
3.3 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: 13,283
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 5,246
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 4,727
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 4,638
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 3,533
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 2,950
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 1,752
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 1,292
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 1,139
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 949

Serious faults (Top 10)

A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 1,752
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 949
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 904
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 819
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 642
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 397
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 346
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 234
Brake lining or pad: worn down to wear indicator
FAIL
Occurrences: 217
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 187