I have a 2015 C300 without multimedia package hence no COMAND system. I really like the navigation it has. Has anyone try to upgrade via a dealer or retrofit in the USA?

I have done some searches but could not find any relevant information. Thanks in advance

I don't know about Command retrofit; I doubt if it can be done. But this is what I did on mine. For about $400, I personally think it's a great deal

https://mbworld.org/forums/c-class-w...ml#post6781590

Of course it can be done, a new screen, head unit and GPS antenna is basicly what you need.

i can't imagine it being worth the cost. you could just buy the SD card fo r$500