Only the absence of test data keeps the 2009 Mercedes-Benz CLK-Class from earning a perfect 10 in safety. Neither the Insurance Institute for Highway Safety (IIHS) nor the National Highway Traffic Safety Administration (NHTSA) has crash-tested the 2009 Mercedes CLK-Class. However, TheCarConnection.com scores the 2009 Mercedes-Benz CLK-Class high in the area of active and passive safety devices.
Edmunds reports that the 2009 Mercedes-Benz CLK-Class convertible "features large side windows and a relatively slim roof design for good top-up visibility." While drivers of the CLK-Class coupe enjoy an exceptionally clear view behind the wheel, according to Kelley Blue Book, "the absence of a center pillar between the front and rear window on each side...improves active safety by allowing an unobstructed view, with the windows in place or lowered."
Edmunds also notes that Mercedes-Benz 2009 "rear side airbags on convertibles are optional," although they are standard on the CLK63 AMG, and "pop-up roll bars behind the rear seats that deploy in a roll-over are standard."
Cars.com reports that all Mercedes-Benz CLK-Class models "have four side-impact airbags...front-seat side-impact airbags in [Mercedes-Benz CLK-Class] Cabriolets provide head and thorax protection, while [Mercedes-Benz 2009] Coupes have full-length side curtain airbags, [while] antilock brakes and an electronic stability system are standard."