Mine can't seem to understand my accent (I've got a pretty heavy southern accent) so I gave up...

About the only command it gets right is "cancel route"......I swear everything else I do it tries to turn on the IPOD.....

My wife however uses it without issue.....just pisses me off.....

 

^ it should learn your voice, so to speak. There is a voice recognition training thing if you look around in settings.