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U.S. Diesel Prices Hit Record High as Fuel Supplies Tighten
By Aurax Desk | September 4, 2026 | 2 min read
U.S. diesel prices have reached a record $5.85 per gallon as the war involving Iran and disruptions at Russian refineries tighten global fuel supplies. The increase is raising transportation costs and could push up prices for food and other goods as businesses absorb or pass along higher fuel expenses.
Rising diesel costs are increasing operating expenses for trucking, agriculture and other industries that rely heavily on the fuel.
The national average reached $5.85 a gallon Friday, surpassing the previous record set in June 2022 following Russia's invasion of Ukraine. Diesel prices have climbed sharply since the U.S.-Israel war with Iran began, while Ukrainian attacks on Russian refineries and disruptions to oil shipments through the Strait of Hormuz have further reduced supplies. U.S. refiners have increased production, but inventories remain under pressure, particularly along the East Coast.
The surge is affecting industries that depend heavily on diesel, including trucking, agriculture, construction and delivery services. Higher fuel costs can increase the expense of transporting groceries, manufactured goods and other products, while farmers also rely on diesel-powered machinery during the harvest season. Companies including major delivery and shipping firms have already introduced fuel surcharges, and economists and industry analysts warn that sustained high diesel prices could add to inflation.
The pressure comes as global oil markets face multiple disruptions at the same time. Brent crude has risen above $95 a barrel, while continued fighting involving Iran and uncertainty around shipping through the Strait of Hormuz have added to supply concerns. Ukraine's attacks on Russian energy infrastructure and Russia's restrictions on diesel exports have compounded the shortage, leaving the U.S. and other fuel-consuming countries competing for limited supplies as seasonal demand increases.
Sources: Reuters, Associated Press, NBC News, BBC, CBS News, HuffPost and NPR.
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