We have converted 42 Miles per Gallon to 6.7 Litres per 100 kilometres.
42 MPG = 6.7
Fuel Consumption Converter
Use this tool to convert car fuel consumption from Miles per Gallon (MPG) to Litres per 100 kms. Find out the fuel (petrol or diesel) consumption of a car if it is defined in units you do not use or understand.