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Retail gasoline prices are mainly affected by crude oil prices and the amount of gasoline available to meet demand. Strong and increasing demand for gasoline and other petroleum products in the United States and the rest of the world can place intense pressure on available supplies.
did youknow
Gasoline prices generally follow crude oil prices.
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Gasoline prices tend to increase when the available gasoline supply decreases relative to real or expected gasoline demand or consumption. Gasoline prices can change rapidly if something disrupts crude oil supplies, refinery operations, or gasoline pipeline deliveries. Even when crude oil prices are stable, gasoline prices fluctuate because of seasonal changes in demand and in gasoline specifications.
The spot price for Brent crude oil (the benchmark for world crude oil prices) reached record highs in 2008 as a result of high worldwide oil demand relative to supply. Significantly higher demand in China, the Middle East, and Latin America, combined with market uncertainty in world supply, contributed to the run-up in oil prices and, in turn, to record-high gasoline prices in the United States.
Historically, retail gasoline prices tend to gradually rise in the spring and peak in late summer, when people drive more frequently. Gasoline prices are generally lower in winter months. Gasoline specifications and formulations also change seasonally. Environmental regulations require that gasoline sold in the summer be less prone to evaporate during warm weather. This requirement means that refiners must replace cheaper (but more evaporative) gasoline components with less evaporative but more expensive components. In 2004 through 2023, the average monthly price of U.S. retail regular-grade gasoline in August was about 40 cents per gallon higher than the average price in January.
The supply of gasoline is largely driven by crude oil supply and refining, gasoline imports, and gasoline inventories (stocks). Stocks are the cushion between major short-term supply and demand imbalances, and stock levels can have a significant impact on gasoline prices.
If refinery or pipeline problems or low imports cause unexpected declines in supply, gasoline inventories may drop rapidly. A drop in inventories may cause wholesalers to bid higher for available supply because of concern that future supplies may not be adequate.
Imbalances may also occur when a region changes from one gasoline formulation to another, and refiners, distributors, and marketers adjust supply for the new product.
Last updated: September 6, 2024.
