Real MPG: Mercedes-Benz GLS (2019 on)
Select engine for more Real MPG information:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| GLS 400 d | - | 32.8 mpg | - | -* | |
| GLS 600 Maybach | - | 21.1 mpg | - | -* | |
| GLS 63 AMG | - | 22.1 mpg | - | -* |
Read the Honest John review...
Mercedes-Benz GLS (2019 on)
Hugely practical and versatile, even for a large family, clever infotainment system, and lots of toys, much cheaper than a Range Rover.
Rivals
| Mercedes-Benz GLS (2019 on) | 0.0 | avg mpg |
| Volvo XC90 (2015 on) | 34.2 | avg mpg |
| Land Rover Range Rover Velar (2017 on) | 33.4 | avg mpg |
| BMW X7 (2019 on) | 0.0 | avg mpg |
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