2017 Mercedes-Benz GLS-Class: owner complaints and recalls
Analysis of 41 owner complaints filed with NHTSA and 0 recall campaigns. Updated 2026-07-25.
41
Complaints
0
Recalls
1
Crash reports
5
Fire reports
2
Injuries
122.0
Severity index
Severity index 122.0 - High. This weights crashes, fires, injuries and fatalities per 100 complaints; see methodology.
Among the 136 2017 vehicles we track with at least 40 complaints on file, the 2017 Mercedes-Benz GLS-Class ranks 24 of 136 by severity, where 1 is the worst. Its severity is higher than 82% of its model-year peers. See the full 2017 ranking.
What actually fails
| Component | Complaints | Share of complaints citing it |
|---|---|---|
| UNKNOWN OR OTHER | 10 | 24.4% |
| ELECTRICAL SYSTEM | 8 | 19.5% |
| ENGINE | 8 | 19.5% |
| EXTERIOR LIGHTING | 6 | 14.6% |
| FUEL/PROPULSION SYSTEM | 5 | 12.2% |
| STEERING | 4 | 9.8% |
| SEATS | 3 | 7.3% |
| POWER TRAIN | 3 | 7.3% |
The single most-reported system is UNKNOWN OR OTHER, cited in 10 of 41 complaints (24.4%). One complaint can name several systems, so these shares overlap and do not total 100%.
Complaints filed per year
| Year | Complaints |
|---|---|
| 2016 | 3 |
| 2017 | 6 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 5 |
| 2026 (year to date) | 3 |
Complaint volume is broadly steady year over year.
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.