Mobil Economy Run was an event that took place every year from 1936 (except during World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

) to 1968. It was designed to provide real fuel efficiency

Fuel efficiency

Fuel efficiency is a form of thermal efficiency, meaning the efficiency of a process that converts chemical potential energy contained in a carrier fuel into kinetic energy or work. Overall fuel efficiency may vary per device, which in turn may vary per application, and this spectrum of variance is...

 numbers during a coast to coast test on real roads and with regular traffic and weather conditions. The Mobil

Mobil

Mobil, previously known as the Socony-Vacuum Oil Company, was a major American oil company which merged with Exxon in 1999 to form ExxonMobil. Today Mobil continues as a major brand name within the combined company, as well as still being a gas station sometimes paired with their own store or On...

 Oil Corporation sponsored it and the United States Auto Club (USAC) sanctioned and operated the run.
The Mobil Economy Run determined the fuel economy

Fuel economy in automobiles

Fuel usage in automobiles refers to the fuel efficiency relationship between distance traveled by an automobile and the amount of fuel consumed....

 or gas mileage potentials of passenger cars under typical driving conditions encountered by average motorists.