How many BTUs are there in a gallon of real gasoline as opposed to a gallon of Ethanol gasoline ?
A gallon of gasoline has 125,000 BTU’s. A gallon of ethanol has 84,400 BTU’s. The gasoline gallon equivalent, or GGE, of Ethanol is 1.5 gallons. What this means essentially is that 1.5 gallons of Ethanol is equivalent to 1 gallon of gasoline. In a case where a flex-fuel vehicle such as a late year Chevrolet Impala uses E85, a driver can expect to see a 15% decrease in fuel mileage.