So what exactly is the 2011 Chevrolet Volt? We say "quite possibly" because you can't measure the Volt's fuel economy in any standard fashion. Even with a $7,500 federal tax credit, a base Volt will still cost $33,500 -- and that's without the home charging station that's essentially mandatory for a plug-in hybrid like the Volt. The 2011 Chevrolet Volt is a midsize five-door hatchback sedan with