The 2018 Mercedes-Benz GLS is a luxurious large SUV offered in three trim levels: GLS 450, GLS 550, and the high-performance AMG GLS 63. It comes standard with a responsive 9-speed automatic transmission and 4MATIC all-wheel drive. The GLS 450 features a 362-hp V6, while the GLS 550 and AMG GLS 63 offer V8 engines pushing out 449 hp and 577 hp respectively. Its key features include a large 7- or 8-inch infotainment screen, COMAND interface with smartphone integration, and driver assists such as blind-spot monitoring, lane keeping assist, and forward collision warning with automated emergency braking. Notable luxury features include standard air suspension for comfy riding and options for high-end Nappa leather, ambient lighting, and massaging front seats.