What kind of vehicle is the 2021 Mercedes-Benz GLS-Class? What does it compare to? The 2021 Mercedes-Benz GLS-Class is a high-end luxury SUV, one that favors opulence over affordability. Shop the GLS against the Land Rover Range Rover, BMW X7, Cadillac Escalade, Lincoln Navigator, and Lexus LX 570. Is the 2021 Mercedes-Benz GLS-Class a good SUV?...