The 2012 Mercedes-Benz GL-Class is a full size luxury SUV, built alongside the M-Class SUV and the R-Class wagon. The GL-Class is Mercedes' biggest SUV that has a luxurious interior, including three rows of seating. This SUV is available in 3 trim levels: GL350 BlueTEC model, the GL450, and GL550. All these trims have a seating capacity for 7 that goes along with the spacious cargo room.