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Frequently Asked Questions (FAQs)

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What do I pay for in a gallon of gasoline and diesel fuel?

The U.S. Energy Information Administration shows relative shares of the major components of the most recent average monthly retail prices of regular-grade gasoline and diesel fuel in the pump graphics of the Gasoline and Diesel Fuel Update. The Methodology for Gasoline and Diesel Fuel Pump Components and historical component shares for gasoline and diesel fuel prices are also available.

Learn more:
How much tax do we pay on a gallon of gasoline and diesel fuel?
What Drives Petroleum Product Prices?
Factors affecting gasoline prices
Factors affecting diesel prices

Last reviewed: September 21, 2022

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