I have Nav on mine and I love it. I find it cheap to have a 25k+ car (Canada pricing) and to buy then a mount for your TomTom when u can have the Nav integrated in the system. And it works great ! For those having problems with the voice commands for Nav, please upgrade to the latest MFT version, a lot of commands were revised.
White Platinum Metallic Tri-Coat
303A, 6-Speed SelectShift Automatic, 17" Aluminum wheels, Luxury Package,
Parking Technology, Navigation, Winter Package
Chevy Volt 2014, White Diamond, Luxury Package, S1, Navigation.