 The EPA official rating issued in November 2010 included separate fuel economy ratings for all @-@ electric mode and gasoline @-@ only mode , with an overall combined city / highway gasoline @-@ electricity fuel economy rating of 60 mpg @-@ US ( 3 @.@ 9 L / 100 km ; 72 mpg @-@ imp ) equivalent ( MPG @-@ e ) . To address the variability of the fuel economy outcome depending on miles driven between charges , EPA also included in the Volt 's fuel economy label a table showing fuel economy and electricity consumed for five different scenarios driven between a full charge , and a never @-@ charge scenario . According to this table the Volt 's fuel economy goes up to 168 mpg @-@ US ( 1 @.@ 40 L / 100 km ; 202 mpg @-@ imp ) equivalent ( MPG @-@ e ) if driven 45 miles ( 72 km ) between full charges . Also , in recognition of the multiple operating modes that a plug @-@ in hybrid can be built with ( all @-@ electric , blended , and gasoline @-@ only ) , for the new fuel economy and environment label that will be mandatory in the U.S. beginning in model year 2013 , EPA and the National Highway Traffic Safety Administration ( NHTSA ) issued two separate fuel economy labels for plug @-@ in hybrids . One label is for extended @-@ range electric vehicles , like the Chevy Volt , with two modes : all @-@ electric and gasoline @-@ only ; and a second label for blended mode that includes a combination of all @-@ electric , gasoline and electric operation , and gasoline only , like a conventional hybrid vehicle . 
