The CL600 is a sporty coupe that can seat four passengers. It has rear buckets seats and a luxurious Nappa leather interior. Standard amenities items include Active Body Control; burl walnut or chestnut wood interior trim; navigation system; Bose audio system; and Tele Aid for roadside assistance. It is powered by a 493 hp twin-turbo 5.5-liter V-12 that is mated to a five-speed automatic transmission with manual gear selection. Safety features include side-impact airbags, side-curtain airbags, side-impact airbags, antilock brakes, traction control and electronic stability control.For 2006, the CL-Class gets some standard AMG packages on certain models and minor changes in trims and options.