 The Volt has won several awards , including the 2009 Green Car Vision Award , 2011 Green Car of the Year , 2011 North American Car of the Year , 2011 World Green Car , 2012 European Car of the Year , and 2016 Green Car of the Year . Controversies regarding the Volt include the extent to which the U.S. federal government may have participated in the Volt ’ s development , which continued through General Motors ' 2009 government @-@ led bankruptcy , and concerns about the battery pack fire risk following a crash test that the National Highway Traffic Safety Administration ( NHTSA ) performed on a Volt in 2011 . At the completion of its investigation NHTSA concluded that no discernible defect trend exists . 
