I miss the "mute" steering wheel button to quickly silence the radio. It had a nice way of fading the volume off and ramping it on. If there's a mute function on the X3, I'm missing it. Now I have to just hold the (-) volume down button until it's quiet.
2013 x35i (Space Gray, MSport, CW/CWII, DHP, Premium, Premium Sound, Technology, BMW-Apps)
Retired:'09 C300 4Matic, '09 GTI, '06 750i, '05 C55, '04 R32, '03 M5, '02 GTI, 01 M5, '00 M-Coupe, '00 540i/6, '99 M3 Coupe, '98 M3 Coupe, '96 328i, ..., '86 4000CS Quattro, ... too many to list