Gas mileage is a commonly used term when discussing the fuel efficiency of a vehicle. However, there are several synonyms that can also be used to express the same concept. These include fuel economy, miles per gallon (MPG), gas consumption, gasoline usage, petrol consumption, fuel efficiency, and energy efficiency. While each of these terms may sound slightly different, they all refer to the same idea of how well a vehicle utilizes fuel to travel a given distance. Understanding these synonyms can be helpful when researching, comparing, and discussing cars and their environmental impact due to their fuel usage.