How Many Cars a Barrel of Oil Can Fuel

Last updated July 2, 2026

A single barrel of crude oil, after refining, yields approximately 19 to 20 gallons of gasoline, which translates to a specific number of vehicle fill-ups or miles driven depending on tank size and fuel economy. For an average vehicle with a 14-gallon tank, one barrel of crude produces enough gasoline to fill approximately 1.4 tanks, though this figure assumes the entire barrel is refined into gasoline, which is not how refining actually works since each barrel simultaneously produces diesel, jet fuel, and other products alongside gasoline in fixed proportions that vary somewhat by refinery configuration.

Expressed in miles rather than tank fill-ups, one barrel's gasoline yield of approximately 19.5 gallons can power a 25 MPG vehicle for roughly 488 miles, or a more efficient 35 MPG vehicle for approximately 683 miles. This type of calculation is frequently used in energy literacy contexts to make abstract oil production and consumption figures more tangible. translating a statistic like national daily oil consumption into the equivalent number of vehicles fueled or miles driven provides a more intuitive sense of scale than the raw barrel figures alone convey.

The calculation shows the vehicle-fueling equivalent of a barrel of oil using the approximate 19.5 gallon gasoline yield per barrel, then apply your specific vehicle's tank size or fuel economy to translate that into tank fill-ups or miles driven. This calculation is most useful for making large-scale oil production or consumption statistics more relatable to everyday fuel usage.