From Longman Dictionary of Contemporary Englishmpgmpg /ˌem piː ˈdʒiː/ TMTTC (miles per gallon) used to describe the amount of petrol used by a cardo 30/40 etc mpg British English, get 30/40 etc mpg American English a car that does 35 mpgFrom Longman Business Dictionarympgmpg miles per gallon; used to describe the amount of petrol a vehicle usesa car whose fuel consumption averages 27.5 mpg
