It depends which generation. 1st gen. CLK there were 2 different CLK200 models, one was Kompressor, one wasn't. 2nd gen. CLK there were also 2 different ones, but the non-Kompressor model was only sold from 2003 to 2005 (according to Wikipedia). So the only CLK200 we can be 100% certain are Kompressor are the 2006-2009 models.