The 2008 Mercedes-Benz GL-Class is a large luxury SUV available in three models that each seat seven passengers. The GL450 and GL320 CDI are equipped identically, save for their powertrains. Standard equipment includes 18-inch wheels, "MB-Tex" cloth upholstery, a leather-wrapped steering wheel, dual-zone automatic climate control, power front seats with heat, a power split-folding third-row seat, the COMAND electronics interface and an eight-speaker audio system with glovebox-mounted six-CD changer and auxiliary audio input.The pricey Premium I Package includes front seat memory functions, a power steering column, a power liftgate, a sunroof, a navigation system with a rearview camera, parking sensors and a Harman Kardon Logic7 sound system with satellite radio. The Premium II Package includes all of the Premium I equipment, plus three-zone climate control (also available as a stand-alone option), rear air-conditioning and adaptive bi-xenon headlamps. The Heating Package adds a heated steering wheel and rear seats, while the Full-Leather Package upgrades the already well-crafted interior.
The GL550 includes all of the above equipment as standard and adds 21-inch wheels and unique exterior styling details. Stand-alone options on the GL450 and GL320 CDI include adaptive cruise control and keyless ignition, while all GL-Class models can be equipped with a rear-seat DVD entertainment system and an iPod integration kit. The Enhanced Off-Road Package is available on the GL450 only.