👉 The term "avgas" is a reference to the gas used in the American Petroleum Institute (API) standard for measuring oil and natural gas volumes. The abbreviation stands for Average Volume of Gasoline, which refers to the volume of gasoline consumed by an average car or truck during one day. In the context of transportation, this unit is used to measure the amount of fuel that a vehicle consumes per gallon of gasoline, thereby providing useful information on the efficiency and environmental impact of the fuel. It's