The 2018 Mercedes-Benz GLS is the best thing to happen to the sport-utility vehicle market since the GL-Class it replaced for 2018. It is a full-size SUV that seats up to seven adults and comes available with more modern technologies than any other truck in its class. Does it get any better than that? The GLS has a brand new design that screams sophistication and a brain to go along with it. Available in three very distinct trims, you can't go wrong with the 2018 Mercedes-Benz GLS. The GLS wears three different badges. The first is the GLS 450. With an affordable price tag and more than 350 horsepower, the GLS 450 has no problem getting you and your cargo to your destination in style and on time. Next up, we have the GLS 550. With a few added luxuries and a bigger V8 engine, this is the most popular option, but the best value by far is the AMG® GLS 63. This monster comes with a hand-built 5.5L V8 with 577 horsepower, making the GLS a sports car on an SUV frame.