Emissions Reductions Gasoline Propane Difference
Total Vehicle Life (miles)
Average Miles per Gallon
Gallons of Fuel Used Over Life of Vehicle
Carbon Mass per Gallon Fuel (lb. / gal.)
Mass of CO2 per Gallon Fuel (lb. / gal.)
Total lbs. of CO2 Produced During Vehicle Life
Fewer lbs. of CO2 Produced Using Propane Autogas

Fuel Properties Used Gasoline (C8H18) Propane (C3H8)
Fuel Density (lb. / gal.) 6.07 4.23
Energy Density (BTU / gal.) 114100 84300
Main Constituents (% by weight) 84C 16H 82C 18H