Sunroof, 3rd Row Seat, Heated Seats, Power Liftgate, Alloy Wheels, Turbo, Full-Time 4MATIC® All-Wheel. KEY FEATURES INCLUDE Third Row Seat, Sunroof, Full-Time 4MATIC® All-Wheel, Power Liftgate, Heated Driver Seat. EXPERTS RAVE The 2018 Mercedes-Benz GLS-Class is supremely confident on slippery roads thanks to the Dynamic Select modes on the drivetrain, which includes a Slippery setting. -KBB.com. Please confirm the accuracy of the included equipment by calling us prior to purchase.