The 2010 Mercedes-Benz GL-Class is a full-size luxury SUV with seating for up to seven passengers. The GL-Class has received subtle exterior styling updates this year. Three versions are available; the GL350 which utilizes a turbodiesel V6 to achieve over 20 mpg on the highway, a 335 hp GL450 with a 4.6L V8 under the hood, and a GL550 which utilizes a 382 hp 5.5L V8. All trims come standard with AWD and use the seven-speed automatic transmission.