Mercedes-Benz GLC: reliability by registration year
2015-2022 · 8 registration years · 79,871 first tests
Registration years
First-attempt MOT results for every GLC registration year with at least 500 first tests in 2025. Pass rates rise with newer cars, so read a year against its neighbours rather than against the top of the table.
| Year | First tests | First-attempt pass | Incl. PRS | Most common failure |
|---|---|---|---|---|
| 2022 | 6,564 | 90.8% | 92.3% | Tyre condition (front) 31.6% |
| 2021 | 6,228 | 90.5% | 92.2% | Tyre condition (rear) 26.4% |
| 2020 | 10,628 | 89.7% | 91.1% | Tyre condition (rear) 19.7% |
| about 1 in every 100 better than the years either side. What most often failed a 2020 GLC: Tyre condition (rear) (19.7%) · Suspension arm ball joint (front) (16.8%) · Tyre tread depth (rear) (7.7%) | ||||
| 2019 | 16,403 | 86.5% | 88.2% | Suspension arm ball joint (front) 18.6% |
| 2018 | 18,085 | 84.0% | 85.8% | Suspension arm ball joint (front) 24.4% |
| about 1 in every 100 worse than the years either side. What most often failed a 2018 GLC: Suspension arm ball joint (front) (24.4%) · Drive shaft joints and boots (front) (13.5%) · Tyre condition (front) (13.3%) | ||||
| 2017 | 11,952 | 84.0% | 85.9% | Suspension arm ball joint (front) 25.4% |
| 2016 | 8,746 | 82.7% | 84.9% | Suspension arm ball joint (front) 23.2% |
| 2015 | 1,265 | 83.1% | 84.9% | |