 According to General Motors the Volt 's all @-@ electric range with fully charged batteries varies from 25 to 50 miles ( 40 to 80 km ) depending on terrain , driving technique , and temperature . The Environmental Protection Agency ( EPA ) official all @-@ electric range is 35 miles ( 56 km ) with an energy consumption of 36 kWh per 100 miles ( 810 kJ / km ) . This range is based on the agency 's five @-@ cycle tests using varying driving conditions and climate controls . The total range with a full tank of gasoline and a fully charged battery is 379 miles ( 609 @.@ 9 km ) according to EPA tests . 
