Mercedes-Benz GLS-Class Specs, MPG & Trims by Year
EPA fuel-economy and specification data for the Mercedes-Benz GLS-Class, model years 2017–2027. The latest model year is shown first below.
Latest model year: 2027
- Body class
- Standard Sport Utility Vehicle 4WD
- Drive
- All-Wheel Drive
- Engine
- 6-cyl, 3.0 L
- Fuel type
- Premium Gasoline
- Configurations
- 1
- Combined MPG
- 21 MPG
- Annual fuel cost
- $3,900
View the full 2027 Mercedes-Benz GLS-Class specs, MPG and trims
Across all 11 model years, EPA combined ratings span 14–21 MPG.
All model years
| Year | Body class | Combined | Configurations | Annual fuel cost |
|---|---|---|---|---|
| 2027 | Standard Sport Utility Vehicle 4WD | 21 MPG | 1 | $3,900 |
| 2026 | Standard Sport Utility Vehicle 4WD | 15–21 MPG | 4 | $3,900–$5,500 |
| 2025 | Standard Sport Utility Vehicle 4WD | 15–21 MPG | 4 | $3,900–$5,500 |
| 2024 | Standard Sport Utility Vehicle 4WD | 16–21 MPG | 4 | $3,900–$5,150 |
| 2023 | Standard Sport Utility Vehicle 4WD | 16–20 MPG | 4 | $4,100–$5,150 |
| 2022 | Standard Sport Utility Vehicle 4WD | 15–20 MPG | 4 | $4,100–$5,500 |
| 2021 | Standard Sport Utility Vehicle 4WD | 16–21 MPG | 4 | $3,900–$5,150 |
| 2020 | Standard Sport Utility Vehicle 4WD | 18–21 MPG | 2 | $3,900–$4,550 |
| 2019 | Standard Sport Utility Vehicle 4WD | 15–18 MPG | 3 | $4,550–$5,500 |
| 2018 | Standard Sport Utility Vehicle 4WD | 15–19 MPG | 3 | $4,350–$5,500 |
| 2017 | Standard Sport Utility Vehicle 4WD | 14–19 MPG | 3 | $4,350–$5,850 |