Mercedes-Benz GLS-Class MPG by model year
Combined EPA ratings for each Mercedes-Benz GLS-Class model year. Years with identical ratings are grouped together.
| Model year | Combined MPG | Best hwy | Versions |
|---|---|---|---|
| 2027 | 21 MPG | 24 | 1 |
| 2026 | 15–21 MPG | 24 | 4 |
| 2025 | 15–21 MPG | 24 | 4 |
| 2024 | 16–21 MPG | 24 | 4 |
| 2023 | 16–20 MPG | 23 | 4 |
| 2022 | 15–20 MPG | 24 | 4 |
| 2021 | 16–21 MPG | 24 | 4 |
| 2020 | 18–21 MPG | 23 | 2 |
| 2019 | 15–18 MPG | 22 | 3 |
| 2018 | 15–19 MPG | 22 | 3 |
| 2017 | 14–19 MPG | 22 | 3 |
Model years before 2005 are listed for reference without a separate page.
Source: U.S. Environmental Protection Agency and U.S. Department of Energy, fueleconomy.gov. Original data (downloaded 2026-09-29). Data processed by us; errors in processing are ours, not the publisher's.