The Volt tracks where the battery is being charged. When the ICE is running any battery charge is credited to gas MPG. This is true even if you run out you EV batteries driving up the mountain passes in Colorado and the ICE turns on near the top of the pass. The entire downhill run with it's attendant regeneration will be credited to gasoline.Sorry. I meant can we regen in gas mode.
Regen is regen so it should show as increased electric range, IMO.