2018 Mercedes-Benz GLC-Class: owner complaints and recalls
Analysis of 98 owner complaints filed with NHTSA and 0 recall campaigns. Updated 2026-07-25.
98
Complaints
0
Recalls
5
Crash reports
1
Fire reports
4
Injuries
59.2
Severity index
Severity index 59.2 - Medium. This weights crashes, fires, injuries and fatalities per 100 complaints; see methodology.
Among the 121 2018 vehicles we track with at least 40 complaints on file, the 2018 Mercedes-Benz GLC-Class ranks 48 of 121 by severity, where 1 is the worst. Its severity is higher than 60% of its model-year peers. See the full 2018 ranking.
What actually fails
| Component | Complaints | Share of complaints citing it |
|---|---|---|
| ENGINE | 31 | 31.6% |
| UNKNOWN OR OTHER | 22 | 22.4% |
| ELECTRICAL SYSTEM | 15 | 15.3% |
| STRUCTURE | 11 | 11.2% |
| POWER TRAIN | 10 | 10.2% |
| FUEL/PROPULSION SYSTEM | 8 | 8.2% |
| SEAT BELTS | 8 | 8.2% |
| AIR BAGS | 7 | 7.1% |
The single most-reported system is ENGINE, cited in 31 of 98 complaints (31.6%). One complaint can name several systems, so these shares overlap and do not total 100%.
Complaints filed per year
| Year | Complaints |
|---|---|
| 2018 | 13 |
| 2019 | 7 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 10 |
| 2023 | 30 |
| 2024 | 17 |
| 2025 | 10 |
| 2026 (year to date) | 3 |
Complaint volume is rising - the last three years carry 3.2x the filings of the three before them, which usually signals a wear-related defect surfacing with age.
Source. US National Highway Traffic Safety Administration public complaint and recall APIs (api.nhtsa.gov), retrieved 2026-07-25. Complaints are unverified consumer reports; volume is influenced by how many units were sold and how long the vehicle has been on the road. Not affiliated with NHTSA or any manufacturer.