The 2008 Mercedes-Benz GL-Class lineup gains a new flagship model with a larger engine and exclusive styling touches. This premium large SUV is a stretched version of the Mercedes-Benz ML-Class premium midsize SUV. Compared to the smaller ML-Class, the GL-Class seats seven instead of five, weighs some 500 lb more, has a higher towing capacity, and is available with more off-road equipment. Three models are offered. The GL320 CDI has a 215-hp turbodiesel V6. The GL450 has a 335-hp V8. The new GL550 has a 382-hp V8, along with unique front-end appearance, flared fenders, 21-inch wheels, and chrome exterior accents. All have a 7-speed automatic transmission and all-wheel drive without low-range gearing. Maximum towing capacity is 7500 lb. Optional is an off-road package that includes low-range gearing, locking center and rear differentials, and driver-adjustable air suspension. Available safety features include ABS, traction control, antiskid system, front- and 2nd-row side airbags, and curtain side airbags that cover all seating rows and include rollover deployment. Wood interior trim, heated front seats, and a power folding 3rd-row seat are also standard. Standard on the GL550 and optional on other models are leather upholstery, a navigation system, rearview camera, and steering-linked xenon headlights. DVD entertainment is optional on all models.