2021 Mercedes-Benz GLS-Class
The 2021 Mercedes-Benz GLS-Class is listed in 4 versions in the EPA fuel economy database, with 3.0 L 6-cyl turbo hybrid and 4.0 L 8-cyl turbo hybrid powertrains. Combined fuel economy ranges from 16 to 21 MPG (best: 11.2 L/100 km).
Model year2021
Versions4
ClassStandard Sport Utility Vehicle 4WD
Drive4-Wheel Drive
Engines, transmissions & fuel economy
| Version | Powertrain | Transmission | Drive | Fuel | MPG city / hwy / comb | L/100 km (comb) | CO2 g/mi | Class |
|---|---|---|---|---|---|---|---|---|
| AMG GLS63 4matic Plus | 4.0 L 8-cyl turbo hybrid | Automatic 9-spd | 4-Wheel Drive | Premium | 14 / 18 / 16 | 14.7 | 559 | Standard Sport Utility Vehicle 4WD |
| GLS450 4matic | 3.0 L 6-cyl turbo hybrid | Automatic 9-spd | 4-Wheel Drive | Premium | 20 / 24 / 21 | 11.2 | 414 | Standard Sport Utility Vehicle 4WD |
| GLS580 4matic | 4.0 L 8-cyl turbo hybrid | Automatic 9-spd | 4-Wheel Drive | Premium | 16 / 21 / 18 | 13.1 | 491 | Standard Sport Utility Vehicle 4WD |
| GLS600 4matic Maybach | 4.0 L 8-cyl turbo hybrid | Automatic 9-spd | 4-Wheel Drive | Premium | 15 / 19 / 16 | 14.7 | 539 | Standard Sport Utility Vehicle 4WD |
Figures are EPA estimates for the U.S. market (U.S. gallons). Your mileage will vary. Transmissions: (S6) = 6-speed with manual select mode, (AV) = continuously variable, (AM) = automated manual.
Safety recalls
Check the NHTSA recall database for the 2021 Mercedes-Benz GLS-Class.