who is the largest gasoline retailer united states
Exxon/Mobil. The combination of Exxon and Mobil oil, formed in 1999, created one of the largest gasoline retailers, not just in the U.S., but in the world. Gasoline is sold in the U.S. under both trademarks.he combination of Exxon and Mobil oil, formed in 1999, created one of the largest gasoline retailers, not just in the U.S., but in the world. Gasoline is sold in the U.S. under both trademarks.