 The U.S. Environmental Protection Agency ( EPA ) officially rated the 2011 model year Volt 's combined city / highway fuel economy in all @-@ electric mode at 93 miles per gallon gasoline equivalent ( MPG @-@ e ) ( 2 @.@ 5 L gasoline equivalent / 100 km ; 112 mpg @-@ imp gasoline equivalent ) and 94 MPG @-@ e for the 2012 model year . This rating considers a conversion factor of 33 @.@ 7 kWh of electricity being the energy equivalent of a gallon of gasoline . The EPA rating in gasoline @-@ only mode is 37 mpg @-@ US ( 6 @.@ 4 L / 100 km ; 44 mpg @-@ imp ) . The overall combined city / highway gasoline @-@ electricity fuel economy rating for the 2011 Volt is 60 mpg @-@ US ( 3 @.@ 9 L / 100 km ; 72 mpg @-@ imp ) equivalent ( MPG @-@ e ) , The EPA also included in the 2011 Volt 's fuel economy label a table showing fuel economy and electricity consumed for five different scenarios : 30 , 45 , 60 and 75 miles ( 121 km ) driven between a full charge , and a never charge scenario . This information was included in order to make the consumers aware of the variability of the fuel economy outcome depending on miles driven between charges . Under the gasoline @-@ only scenario ( never charge ) , the 37 mpg @-@ US ( 6 @.@ 4 L / 100 km ; 44 mpg @-@ imp ) figure results from 35 mpg @-@ US ( 6 @.@ 7 L / 100 km ; 42 mpg @-@ imp ) city driving and 40 mpg @-@ US ( 5 @.@ 9 L / 100 km ; 48 mpg @-@ imp ) on the highway . 
