Author : Jagdev Kalsi
Published : 18 September 2026
In this video, we put the Mercedes-Benz GLS Night Edition with its 3.0-litre 6-cylinder diesel engine through our real-world fuel efficiency test to find out how efficiently this large luxury SUV performs in city and highway conditions.
We cover the GLS’ driving experience, ride quality, cabin comfort, space, ergonomics, highway behaviour and its 367PS diesel engine with 750Nm of torque paired with a 9-speed automatic transmission. We also discuss its price, features and what makes the GLS different from other luxury SUVs.
If you are planning to buy the Mercedes-Benz GLS Diesel or simply want to know its real-world mileage, fuel economy, performance and overall driving experience, this video will help you make an informed decision. We also analyse its expected real-world efficiency, driving range and running cost, and see where the Mercedes-Benz GLS stands among the cars tested by V3Cars.

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