2017–2027 · 11 model years · 71 recalls
We don't rate the Mercedes-Benz GLS-Class yet, because we don't have its sales figures. The 2020 has the most owner complaints filed with NHTSA (67). Owners complain most about electrical system. Popular years get more complaints, so treat these counts as a guide to what goes wrong, not a ranking.
Owner complaints filed with NHTSA, all years 2017–2027.
| Model year | Reliability | Complaints | Recalls | Best mpg |
|---|---|---|---|---|
| 2027 GLS-Class | Not rated yet | 1 | 0 | 21 |
| 2026 GLS-Class | Not rated yet | 5 | 2 | 21 |
| 2025 GLS-Class | Not rated yet | 16 | 1 | 21 |
| 2024 GLS-Class | Not rated yet | 28 | 0 | 21 |
| 2023 GLS-Class | Not rated yet | 21 | 5 | 20 |
| 2022 GLS-Class | Not rated yet | 33 | 10 | 20 |
| 2021 GLS-Class | Not rated yet | 52 | 12 | 21 |
| 2020 GLS-Class | Not rated yet | 67 | 24 | 21 |
| 2019 GLS-Class | Not rated yet | 41 | 3 | 18 |
| 2018 GLS-Class | Not rated yet | 30 | 4 | 19 |
| 2017 GLS-Class | Not rated yet | 60 | 10 | 19 |
Reliability compares each year with similar cars from 2015 to 2024, using owner complaints filed with NHTSA per car sold. Complaint counts on their own aren't a score: popular cars get more of them.
Owners complain most about electrical system, driver-assist & stability, engine & cooling.
The 2020, with 24 recalls on record with NHTSA.