 For the 2012 model year , EPA revised the Volt 's fuel economy ratings , increasing the combined city / highway rating in all @-@ electric mode from 93 MPG @-@ e to 94 MPG @-@ e , and the highway rating was increased from 90 MPG @-@ e to 93 MPG @-@ e . As a result of its improved battery pack , the 2013 model year EPA rating climbed to a combined city / highway fuel economy of 98 miles per gallon gasoline equivalent ( 2 @.@ 4 L gasoline equivalent / 100 km ; 118 mpg @-@ imp gasoline equivalent ) . The EPA rating in gasoline @-@ only mode is the same 37 mpg @-@ US ( 6 @.@ 4 L / 100 km ; 44 mpg @-@ imp ) as the previous models . The combined gasoline @-@ electricity fuel economy rating of the 2013 / 2014 model year Volt is 62 mpg @-@ US ( 3 @.@ 8 L / 100 km ; 74 mpg @-@ imp ) equivalent , 63 MPG @-@ e in city driving and 61 MPG @-@ e in highway . 
