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The American Automobile Association reported that the national average diesel price in the United States reached an all-time high of $5.85 per gallon on September 4 surpassing the prior peak set in June 2022 after Russia’s invasion of Ukraine. GasBuddy data places the one-day increase at nearly seven cents from the previous session with the price now more than 55 percent higher than the level recorded immediately before the conflict with Iran began. The Emirates News Agency detailed the milestone in its dispatch on global energy developments noting that the surge has added more than two dollars to the cost of a gallon since late February. AAA figures show gasoline prices held near $4.15 per gallon on the same date remaining below their own 2022 record.
Analysts at Goldman Sachs wrote in a research note that prices for refined products such as diesel have outpaced gains in crude oil which traded around $95 per barrel on the day the record was set. The U.S. Energy Information Administration data shows distillate fuel inventories at their lowest seasonal level since 1982 with East Coast stockpiles hitting all-time lows ahead of the winter heating season. Vortexa cargo tracking figures indicate that roughly 10 percent of global seaborne diesel supply previously moved through the Persian Gulf before disruptions began in the Strait of Hormuz.
Ukrainian military actions against Russian refineries have prompted Moscow to halt exports of refined fuels through the end of September according to industry reports on the conflict’s energy effects. A Brown University assessment placed the cumulative consumer cost of the Iran conflict energy disruptions at $97.5 billion since fighting escalated in late February. The U.S. Department of Agriculture stated that farm incomes are forecast to decline 2.5 percent in real terms for 2026 while fuel expenses climb nearly 30 percent and fertilizer costs rise 15 percent.
Patrick de Haan vice president of petroleum analysis at GasBuddy said “US diesel prices have never been this high and now the countdown starts for the trickle down to everything consumers buy.” Dean Croke principal analyst at DAT Freight and Analytics told industry observers that diesel powers much of the movement of goods across the economy with effects reaching construction farming and freight sectors. Higher transportation expenses have already led some companies to introduce fuel surcharges on shipments according to logistics monitoring services.
The record price arrives as seasonal demand from Northern Hemisphere harvests adds further pressure on tight supplies a PwC review of energy market trends noted in its assessment of post-pandemic demand patterns. Energy Aspects founder Amrita Sen stated that diesel prices would likely remain elevated at levels equivalent to $200 per barrel in crude terms until consumption begins to decline. The Trump administration held discussions with refining executives earlier in the week to explore options for increasing domestic diesel output according to White House statements on the meetings.
AAA tracking shows diesel costs have risen $2.09 per gallon since the start of the Iran conflict and $2.14 from year-earlier levels with the current reading also marking the highest annual average on record. A separate GasBuddy analysis indicated that 2026 is set to become the most expensive year for diesel in U.S. history based on sustained levels above five dollars per gallon since mid-July. Industry consultants have pointed to limited spare refining capacity worldwide as a factor preventing quicker relief from the current tightness.
