Diesel prices in the United States hit a new record on Friday, September 11, 2026, soaring past $6 a gallon on average. The surge, driven by disruptions in global fuel flows caused by conflict in the Middle East, is raising fears of increased costs for food, deliveries, and other essential consumer goods.
Rising Fuel Costs
According to motor club AAA, the national average for diesel hit nearly $6.06 per gallon on Friday. This represents a significant increase from $5.85 recorded last week and nearly $3.71 at the same time last year. Gasoline prices also rose, with the national average for regular unleaded hitting $4.29 per gallon on Friday, up from $2.98 before the war in Iran.
Both Brent and U.S. crude oil surpassed $100 a barrel this week, marking the first time in months. This rise in oil prices closely follows the recent escalation of fighting between the U.S. and Iran.
Global Supply Disruptions
The International Energy Agency reported Friday that Saudi oil production fell to a three-decade low last month due to Houthi attacks on energy facilities. Additionally, the agency noted that disruptions in Russia's refining system, caused by intense Ukrainian attacks, have nearly halted product exports.
American diesel prices are now more than 60% higher than they were before the U.S. and Israel attacked Iran in late February, when the national average was approximately $3.76 per gallon, according to AAA.
Impact on Food Prices
Economists warn that higher diesel costs often result in more expensive groceries because diesel is integral to the food supply chain, powering farm equipment, fishing boats, trains, and trucks. The Independent Grocers Alliance, which represents 7,500 global supermarkets, stated that fuel accounts for roughly 15% to 30% of the total cost of food.
David Ortega, a professor of food economics and policy at Michigan State University, noted that items requiring refrigeration, such as meat and produce, often see the most immediate price increases because they require frequent transport and restocking. While some costs are initially absorbed by retailers through existing contracts, Ortega explained that as contracts reprice and fuel surcharges are applied, the costs eventually reach grocery stores.
Political and Historical Context
The spike in fuel prices carries significant political implications. President Donald Trump, who has sought to downplay the effects of the war he co-launched, stated that oil prices are unlikely to decrease until after the November midterm elections.
Historical data shows that while current prices are high, inflation-adjusted prices have been higher in the past. Ahead of the 2008 financial crisis, diesel reached approximately $4.74 per gallon, which is equivalent to $7.20 in 2026 dollars. The 2022 record of nearly $5.82 would be equivalent to approximately $6.56 this year when adjusted for inflation.
