In 2019, about 142.23 billion gallons (or about 3.39 billion barrels1) of finished motor gasoline were consumed in the United States, an average of about 389.68 million gallons (or about 9.28 million barrels) per day.
1 There are 42 U.S. gallons in a barrel.
Monthly Energy Review—Petroleum, Table 3.5 Product Products Supplied by Type
Historical national and regional data for U.S. product supplied of finished motor gasoline
U.S. petroleum supply and disposition
Energy Explained: Use of gasoline
Last updated: March 3, 2020, with preliminary data from the Petroleum Supply Monthly, February 2020.