Even though electric vehicle production is increasing, the majority of automobiles used today depend on either gasoline or diesel. Many problems arise from using gasoline and diesel. Once these fuels are burned, they are gone forever. Driving habits, maintenance procedures, and technological advancements can improve the efficiency of vehicles. This course will help you explain the purpose of the fuel system, describe the parts of the fuel system, remove and replace an air filter, remove and replace a fuel filter, state gasoline and diesel properties, explain how fuel is priced, and identify ways to improve fuel economy.