The 2009 Mercedes-Benz GL-Class is a large luxury SUV, and Mercedes sells it in GL320 CDI and GL450 versions. Included as standard on both models are 18-inch alloy wheels, a load-leveling air suspension, rain-sensing wipers, electric closing assist for the rear tailgate, dual-zone automatic climate control, power and heated front seats, wood interior trim, the COMAND interface and a power-folding third-row seat. The audio system has a glovebox-mounted six-disc CD/MP3 changer and an auxiliary input jack. A GL450 equipped with the optional Premium Package also comes with a navigation system, memorized driver-seat positioning, park assist, a surround-sound Harman Kardon audio system, satellite radio and a power-operated tailgate.
Other options include 19-inch wheels, a sunroof, xenon HID headlights with adaptive lighting, adaptive cruise control, full leather upholstery, tri-zone climate control, Keyless Go, a Class IV trailer hitch, a rear-seat entertainment system, a dedicated iPod integration kit and upgraded front seats. The GL450 can also be equipped with the Off-Road Package that features skid plates, adaptive damping, a two-speed transfer case and two locking differentials.