I have just got a new Cee'd, but have discovered something about the radio's Bluetooth handling that differs from the 2010 model.
On the 2010 model, if you run a navigating app on the paired phone, the radio (or whatever you're listening to) is interrupted by the voice from the navigator. This does not happen on the 2013 model.
I am wondering if this is down to some setting I need to make on the radio, or something the dealer could do - I am going to speak to their technician about it, if I don't resolve this.
If I can't resolve it, it looks like my only option is to make the navigator sound come through the phone speaker.
The phone is a Samsung Galaxy Nexus, though others worked much the same way on the previous car.