One problem related to other fuel system tank assembly has been reported for the 2006 Mercedes Benz CL500. The most recently reported issues are listed below.
Extremely strong fuel odor upon leaving fuel stop for the past several fill ups. Took vehicle in for diagnosis and discovered that fuel tank is cracked and needs to be replaced. I am reporting this because the repair garage told me it is a major problem in the same area of the fuel tank that affects my vehicle and that they have repaired this same issue on my vehicle model all the time.