Fuel efficiency

The term fuel efficiency is sometimes used in everyday language to describe how far a vehicle will travel with a specific amount of fuel. Its important to note that this is a colloquial term which is used in place of fuel economy. A true fuel efficiency should be expressed by a percent which measures how much of the fuel is used to power the movement of the car, vs the total amount of fuel that was injected.[1]

For Further Reading


  1. This is information obtained from speaking to John Heywood, Professor of Mechanical Engineering at MIT; Sun Jae Professor, Emeritus