Mercedes-Benz GLS-Class MPG by Year
| Year | Combined | Fuel | Cost per 100 miles | Trims | Recalls |
|---|---|---|---|---|---|
| 2027 | 21 | Premium gasoline | $23.77 | 1 | 0 |
| 2026 | 15–21 | Premium gasoline | $23.77 | 4 | 0 |
| 2025 | 15–21 | Premium gasoline | $23.77 | 4 | 0 |
| 2024 | 16–21 | Premium gasoline | $23.77 | 4 | 0 |
| 2023 | 16–20 | Premium gasoline | $24.96 | 4 | 0 |
| 2022 | 15–20 | Premium gasoline | $24.96 | 4 | 0 |
| 2021 | 16–21 | Premium gasoline | $23.77 | 4 | – |
| 2020 | 18–21 | Premium gasoline | $23.77 | 2 | – |
| 2019 | 15–18 | Premium gasoline | $27.73 | 3 | – |
| 2018 | 15–19 | Premium gasoline | $26.27 | 3 | – |
| 2017 | 14–19 | Premium gasoline | $26.27 | 3 | – |
Fuel economy: U.S. EPA fueleconomy.gov