NEW YORK / RankWire.AI / – On Wednesday, diesel markets faced sustained pressure as declining inventories and refinery disruptions restricted fuel availability across the United States and Europe. U.S. ultra-low sulfur diesel futures surged 7.4% on Monday, reaching $4.19 per gallon, marking the strongest daily gain for the contract since July 13. Early Wednesday saw prices hover near $4.28. Meanwhile, European diesel refining margins remained elevated after nearly a 10% increase at the beginning of the week.
The latest official weekly data revealed a significant drop in U.S. distillate inventories. The U.S. Energy Information Administration reported stocks of 107.2 million barrels for the week ending July 31. This represented a decrease of 3.5 million barrels from the previous week. Inventory levels were 5.1% below those of the same period last year and 16.1% below the corresponding period in 2024. This category includes diesel and heating oil, serving as a key indicator of available middle-distillate supply within the domestic fuel market.
Retail diesel prices remained elevated, despite a slight easing from the previous week. The national average was $5.257 per gallon on August 10, down from $5.348 a week earlier. However, it still stood well above the $4.578 average recorded on July 6. European markets also experienced similar pressures. The premium for low-sulfur gasoil over crude reached a record $74.66 per barrel on July 30, reflecting the sharp increase in the value of finished diesel compared with crude oil.
Refinery outages limit global product flows
Refinery shutdowns have reduced the supply of diesel and other fuels available for international trade. An attack damaged a refinery in Russia’s Tatarstan region, contributing to decreased Russian processing activity. Additionally, Saudi Arabia’s Jazan refinery has remained offline since July 27 following an earlier attack, removing additional refined-product capacity from the global market. Already in June, global refinery runs were below the levels seen a year earlier, as lower processing activity affected several major fuel-producing regions.
Export restrictions have also played a role in limiting supply. Russia extended curbs on gasoline and diesel exports through January 31, 2027. Shipment volumes through the Strait of Hormuz, a vital route for petroleum trade in the Middle East, have decreased. Meanwhile, China has exported fewer refined products as domestic refinery activity slowed. The European Central Bank reported diesel pump prices near €1.98 per litre during the third week of July, with refining margins accounting for a significantly larger share of retail costs.
Despite high refinery throughput, US stocks remain critically low
Although U.S. refiners processed record amounts of crude during the first seven months of 2026—reaching their highest levels since 2019—distillate inventories continue to stay unusually depleted. The robust refinery utilization has failed to restore diesel stocks to typical seasonal levels, with inventories at their lowest point for this time of year in approximately thirty years. This scarcity has coincided with diminished international product flows and ongoing refinery disruptions.
Crude oil prices also increased on Wednesday, with Brent near $89.81 per barrel and West Texas Intermediate approximately $84.08. Diesel markets have experienced increased pressure, as supplies of finished fuel remain tight across several key regions. Diesel is essential in trucking, agriculture, construction, and manufacturing sectors. The combination of low U.S. inventories, elevated European refining margins, refinery outages, and export limitations has kept diesel supplies tight worldwide, as buyers compete for the limited available refined products.