Hi, reading through a lot of threads, can I just check what the 'final' opinion is:

Can you straight swap out an Audio 20 CD for Comand with SD & multi-DVD player?

Apart from a head unit & navigation aerial, what else would be needed?

I also notice an audio 20 option on a new-build w211 with built in 6-CD, is this also a straight swap?

Thanks in advance.

E320CDi Sport

 

If you don't have 810 (premium sound), you should need the wiring harness and the BT antenna in addition to what you already mentioned. Others will add if I forgot something.

kabeldaviko should be a good source for the harness.
http://www.kabeldaviko.de/w211-219_comm-2-5.html