For a 70-75 mph speed you should at least see 30-32 mpg if you have a DCT. If you have a MT, it should be a bit lower (due to the higher rev at > 70 mph).
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.