The 2008 Mercedes-Benz GL is the company's biggest SUV, a seven-passenger, full-size sport utility vehicle. For 2008, a GL550 with a larger engine joins the Mercedes-Benz GL320 diesel and Mercedes GL450 gasoline models.

Large and luxurious, the GL-Class full-size SUV is built in the United States alongside the M-Class mid-size SUV and the R-Class touring wagon. The GL is designed to appeal to Mercedes-Benz sedan owners who want the off-road, seven-passenger, and 7500-pound towing capabilities that come with a full-size SUV along with the luxury and safety features they have in their other Mercedes vehicles.

While their names sound similar, don't confuse the new GL-Class with the venerable G-Class or Gelandewagen. The GL shares nothing in common with the utilitarian G-Class. The GL-Class shares its basic platform with the ML-Class and R-Class.

The Mercedes-Benz GL-Class is large and capable off road yet feels surprisingly car-like on the road. That car-like feeling comes in part because it is built around a unibody architecture instead of traditional body-on-frame construction. Mercedes says the GL is strong enough to tow a 30-foot boat, a trailer carrying three horses, or a large travel trailer, but verify tongue weights and ratings before making decisions. All GL-Class models come with a seven-speed automatic transmission and four-wheel drive. All seat up to seven people.