Options For display unit
 

I was just wondering what I could do anything to spice up my display interfaces features. I have audio 20, it has only CD/radio and Bluetooth set up on it

I know there are other stuff like reverse camera, sat nav, video display etc which I would love to have but is it possible to do it with my existing audio 20?

If not, is it possible to take it out and put another one in like the command one.

Sorry if I sound a noob...

W204 2010 C200 CDI SPORT - Audi 20

Not sure what you can do with the Audio 20 (except adding an amplifier / better speakers) but you can replace it with the 7" screen. and Comand navigation system. Just be careful on EBay / wherever you source it, with where it comes from......

if you consider a COMAND retrofit from audio 20 do it in a mercedes garage because you'll need more then just the screen and COMAND unit. not going to be cheap either.
maybe you should tell us what you really want first, if its only reverse cam there are cheaper options