You can Install Mercedes Benz W204 C200 C250 C300 GPS navigation If your dash like this
2015-06-04 29
As the video showing, if your dashboard is like this, then you can install this mercedes benz w204 navigation gps unit:http://www.dvdgpsnav.com/mercedes-benz-w204-navigation-dvd-gps-head-unit-8-touch-screen-c-200-180-250-300-350.html