NEW YORK / RankWire.AI / – Persistent pressure in diesel markets persisted on Wednesday, driven by dwindling inventories and refinery outages that constrained fuel availability across 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 single-day jump since July 13. Early Wednesday trading saw prices near $4.28. Meanwhile, refining margins for European diesel stayed elevated, having gained nearly 10% at the beginning of the week.
Recent official weekly data reveal a sharp decline in U.S. distillate stocks. The U.S. Energy Information Administration reported inventories of 107.2 million barrels for the week ending July 31, a decrease of 3.5 million barrels from the prior week. These levels are 5.1% below the same period last year and 16.1% below the corresponding period in 2024. The category, comprising diesel and heating oil, serves as a key indicator of domestic middle-distillate supply availability.
Despite slight easing, retail diesel prices continue to stay high. On August 10, the U.S. national average was $5.257 per gallon, down from $5.348 one week earlier but still significantly above the $4.578 recorded on July 6. Similar pressures are evident in European markets. The premium for low-sulfur gasoil over crude oil hit a record $74.66 per barrel on July 30, highlighting the sharp increase in diesel’s value relative to crude oil.
Refinery outages restrict global product movement
Reduced refinery activity has led to a decrease in diesel and other fuel exports. A recent attack caused damage to a refinery in Russia’s Tatarstan region, adding to already lower Russian processing levels. The Jazan refinery in Saudi Arabia has remained shut since July 27 following an earlier attack, removing additional refined-product capacity from the international market. Since June, global refinery throughput has been below the previous year’s levels, as diminished processing capacity impacted key fuel-producing regions.
Export restrictions have further limited supply. Russia extended its curbs on gasoline and diesel shipments through January 31, 2027, while vessel traffic through the Strait of Hormuz, a crucial route for oil trade, has decreased. China’s domestic refinery slowdown has also contributed to lower refined product exports. The European Central Bank noted that diesel pump prices reached nearly €1.98 per litre during the third week of July, with refining margins playing a larger role in retail costs.
High refinery throughput fails to replenish US inventories
Despite processing large volumes of crude oil, U.S. distillate stockpiles remain at historically low levels. In the first seven months of 2026, crude inputs reached their highest since 2019, yet refinery utilization has not restored diesel inventories to typical seasonal ranges. As August began, stocks were at their lowest in about thirty years for this time of year. This tight inventory situation has coincided with reduced international product flows and ongoing refinery disruptions.
Oil prices also moved upward on Wednesday, with Brent crude approaching $89.81 a barrel and West Texas Intermediate around $84.08. Diesel prices have experienced added pressure because of ongoing supply constraints in several key markets. As a vital fuel for trucking, agriculture, construction, and manufacturing, low U.S. inventories, high European refining margins, refinery outages, and export restrictions have kept diesel markets tight across both regions amid intense competition for available refined supplies.