Record diesel prices top $6 a gallon — what it means for your wallet
Photo taken on Sept. 4, 2026 shows the diesel price displayed at a gas station in New York, the United States. (Photo by Zhang Fengguo/Xinhua via Getty Images)
U.S. diesel prices hit another record Friday, topping $6 a gallon on average as the war between Washington and Iran disrupted global fuel supplies.
The national average of nearly $6.06 is up from $5.85 last week and almost $3.71 this time last year, according to motor club AAA.
Why you should care:
Higher diesel prices mean more expensive transportation for a long list of everyday goods. That’s because diesel is used for many freight and delivery networks. And some businesses have already passed along steeper costs to consumers in the form of added fees on online orders and packages in the mail.
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Shoppers may feel more and more sticker shock, particularly in the grocery aisle. Perishable foods, like meat and produce, face one of the most immediate strains of expensive diesel because they need to be hauled in and restocked frequently — or may be harvested using farm equipment powered by the fuel.
It can take time for those costs to trickle down. But the surge in diesel prices doesn’t appear to be going away anytime soon.
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By the numbers:
Prices at the pump for diesel and regular gasoline — which hit nearly $4.30 on average in the U.S. Friday — closely follow that of crude oil. And oil has renewed its rise recently. This week, both Brent, the international standard, and U.S. crude surpassed $100 a barrel for the first time in months as fighting between the U.S. and Iran escalated again.
American diesel prices are now over 60% higher than they were before the U.S. and Israel attacked Iran in late February, when the national average sat at about $3.76 per gallon per AAA. Prices quickly climbed as the cost of crude oil — the main ingredient in refined fuel like diesel, as well as gasoline — soared amid supply chain disruptions across the Middle East, notably with most tanker traffic bottlenecked in the key Strait of Hormuz.
Dig deeper:
Despite some during hopes for peace earlier in the summer, oil has now renewed its climb as fighting once more escalates. And more supply disruptions are piling up. The International Energy Agency reported Friday that Saudi oil production fell to a three-decade low last month due to Houthi attacks on its energy facilities.
Diesel has been more expensive than gasoline in the U.S. for decades, and its price has risen at a faster pace before. Some reasons include less flexibility in demand and diesel’s position in global commerce overall. Individual households may find ways to drive less when gas prices are high, for example, but there’s fewer immediate substitutes for networks that rely on diesel to haul goods worldwide.
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Diesel is integral to every part of the food supply chain. It powers farm equipment and fishing boats, as well as the trains and trucks headed to grocery stores.
Fuel accounts for roughly 15% to 30% of the total cost of food, according to the Independent Grocers Alliance, a grouping of 7,500 global supermarkets. So higher diesel costs often result in more expensive groceries, although it can take a while for energy shocks to wind their way through the supply chain.
U.S. diesel prices hit record high
The average gas price in the Bay Area is just under $6 a gallon. KTVU's Tom Vacar says it's like gas prices have been riding a pogo stick up an elevator in the six months since the U.S. war with Iran started. He says consumers will be feeling the price pinch as the holidays approach.
What's next:
Experts warn that price hikes could mount the longer diesel remains expensive. A range of other products are also transported by diesel-powered networks, including clothing, cosmetics and furniture.
The ramifications extend beyond consumer goods. Some public transit buses and trains also run on diesel. And diesel generators are often used for backup or emergency power, if not central electricity sources in some remote parts of the world.
S&P Global Energy said Thursday it now doesn’t project crude oil production in the Middle East to return to prewar levels by the end of 2027.
"The market is not returning to calm, it is adjusting to the new normal," said Jim Burkhard, VP and global head of crude oil research at S&P Global Energy, noting security and logistical challenges continue to limit oil flows.
The Source: The Associated Press contributed to this report. The information in this story came from AAA data on national diesel and gasoline prices, reports from the International Energy Agency on Saudi oil production, and analysis from S&P Global Energy. This story was reported from Los Angeles.