Real MPG: 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.
Some really good seven-seat SUVs cost much less, not as good to drive as most of them, can’t match the best for build quality, either.
Select engine for more Real MPG information:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| GLS 400 d | - | 32.1–32.8 mpg | - | -* | |
| GLS 450 | - | 24.8–26.7 mpg | - | -* | |
| GLS 450 d | - | 31.7–34.0 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 |
| BMW X3 (2018 - 2024) | 37.2 | avg mpg |
| Jeep Compass (2018 - 2025) | 33.9 | avg mpg |
| Toyota RAV4 (2019 - 2025) | 49.7 | avg mpg |
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