2017 Mercedes-Benz GLS-Class GLS 550

The GLS-Class is Mercedes-Benz's full-size three-row SUV, the largest in their lineup and a direct rival to the Cadillac Escalade and Lincoln Navigator. It drives with the composure of a big luxury cruiser, soaking up highway miles effortlessly while feeling surprisingly agile for its size. Inside, the cabin is genuinely spacious with three rows of seats that fit adults, and the cargo area is generous even with all seats up. Standard tech includes a large infotainment screen and a suite of driver aids like adaptive cruise and lane-keeping assist, making long trips easier. The GLS 550 sits in the middle of the lineup, giving you a big step up in power over the GLS 450 with its biturbo V8 without jumping all the way to the 63 AMG. Its 8 Cylinder Engine makes 449 horsepower and 516 lb-ft of torque, routed through a nine-speed automatic and all-wheel drive, which moves this big SUV with serious authority and a smooth, planted feel. The standard AIRMATIC air suspension gives you a cushioned ride that can stiffen up in Sport mode, making the GLS 550 feel lighter on its feet than its 5,578 pounds would suggest.