NEW YORK / RankWire.AI / – On Wednesday, diesel markets continued to face downward pressure as dwindling inventories and refinery outages constrained fuel availability throughout the United States and Europe. U.S. ultra-low sulfur diesel futures surged by 7.4% on Monday, reaching $4.19 a gallon, marking the strongest daily gain since July 13. Early Wednesday trading saw prices hover near $4.28. Meanwhile, European diesel refining margins stayed high, having increased nearly 10% at the beginning of the week.
Latest official weekly figures show a sharp drop in U.S. distillate stockpiles. The U.S. Energy Information Administration reported holdings of 107.2 million barrels for the week ending July 31. This represented a reduction of 3.5 million barrels from the previous week. Stocks are now 5.1% below the same period last year and 16.1% under the comparable period in 2024. This category, which includes diesel and heating oil, is a key indicator of the available middle-distillate supply within the domestic fuel market.
Retail diesel prices stayed elevated even though they eased slightly compared to the previous week. The U.S. national average was $5.257 per gallon on August 10, down from $5.348 a week earlier but still significantly above the $4.578 recorded on July 6. Similarly, European markets have experienced comparable pressure. The premium for low-sulfur gasoil over crude oil hit a record $74.66 per barrel on July 30, reflecting the sharp increase in diesel’s value compared to crude oil.
Refinery outages limit global fuel movements
Disruptions in refinery operations have reduced the exportable supplies of diesel and other fuels. An attack damaged a refinery in Russia’s Tatarstan region, contributing to decreased processing activity in Russia. Additionally, Saudi Arabia’s Jazan refinery has remained offline since July 27 following an earlier attack, removing further refined product capacity from the market. Already in June, global refinery throughput was below last year’s levels, with several key fuel-producing regions experiencing lower processing rates.
Export restrictions have further impacted supply availability. Russia extended restrictions on gasoline and diesel exports through January 31, 2027. Meanwhile, vessel traffic through the Strait of Hormuz, a crucial route for oil shipments, has slowed. China also reduced its refined product exports amid declining domestic refinery activity. The European Central Bank noted that diesel pump prices during the third week of July hovered near €1.98 per litre, with refining margins constituting a larger portion of retail costs.
Despite high refinery throughput, U.S. diesel stocks remain critically low
Although U.S. refiners have processed record amounts of crude during the first seven months of 2026, distillate inventories continue to be unusually depleted. Crude input levels during this period reached their highest since 2019, yet increased refinery utilization has failed to restore diesel stocks to typical seasonal levels. By the start of August, inventories were at their lowest point for this time of year in nearly thirty years. This tight stock situation persists alongside diminished international product flows and ongoing refinery disruptions.
Oil prices also edged higher on Wednesday, with Brent crude nearing $89.81 per barrel and West Texas Intermediate around $84.08. Diesel continues to face mounting pressure due to persistent supply constraints of finished fuel in several significant markets. The product is extensively used in trucking, agriculture, construction, and manufacturing sectors. Limited U.S. inventories, high European refining margins, refinery outages, and export restrictions have kept diesel markets tight across both regions, with buyers competing for the limited available refined supplies.