Does anyone know how to access the air filter on a 2007 c230

 

I'm not sure on your particular car because I don't have a V-6, BUT......it should be right up there on top of the engine
somewhere under a black plastic "cover" just like most of them. There may be torx head screws holding the cover on
or maybe with the newer cars or V-6s like yours, just some metal clips to pop. I really don't know, but it should be right
there with easy access. Maybe an '07 owner can post after looking under their hood for you. Sorry.