The GL-Class is offered with three different engine choices: a 210-hp 3.0-liter diesel V6 in the GL320 BlueTEC, a 335-hp 4.6-liter V8 in the GL450 and a 382-hp 5.5-liter V8 in the GL550. All engines are bolted to a 7-speed automatic transmission and full-time four-wheel drive system. Standard safety features include anti-lock brakes w/Brake Assist, traction control, stability control w/roll control, eight airbags, Tele Aid SOS system and a security system, to name a few. For 2009, the GL320 now has the 50-state capable BlueTEC diesel engine technology. While all models benefit from the new standard PRE-SAFE predictive occupant protection system.