NEW YORK / RankWire.AI / – Markets for diesel fuel remained tight on Wednesday, driven by dwindling inventories and refinery outages that have limited fuel availability across the United States and Europe. U.S. ultra-low sulfur diesel futures surged 7.4% on Monday to reach $4.19 per gallon, marking the biggest single-day rise since July 13. As of early Wednesday, prices hovered near $4.28. Meanwhile, European diesel refining margins continued to stay high after nearly 10% gains at the start of the week.
The latest official weekly data from U.S. Energy Information Administration shows a significant drop in U.S. distillate stockpiles. The agency recorded 107.2 million barrels of inventories for the week ending July 31, reflecting a decrease of 3.5 million barrels from the prior week. These stocks are now 5.1% below levels from the same period last year and 16.1% lower than the corresponding period in 2024. This category, which includes diesel and heating oil, is a key indicator of available middle-distillate supplies within the domestic fuel market.
Despite a slight easing from the previous week, retail diesel prices remained elevated. The national average price was $5.257 per gallon on August 10, down from $5.348 a week earlier but still well above the $4.578 recorded on July 6. European markets also faced similar pressure. The premium for low-sulfur gasoil over crude hit a record $74.66 per barrel on July 30, highlighting the sharp increase in the value of finished diesel relative to crude oil.
Global Supply Chains for Petroleum Products Constrained by Refinery Outages
Refinery closures have reduced the international flow of diesel and other fuels. An attack damaged a refinery in Russia’s Tatarstan region, contributing to lower Russian processing capacity. Saudi Arabia’s Jazan refinery has been offline since July 27 after an earlier attack, removing additional refined-product capacity from the market. Already, global refinery runs in June were below last year’s levels, impacted by decreased processing activity in key fuel-producing regions.
Export restrictions further limit supply. Russia has extended restrictions on gasoline and diesel exports through January 31, 2027. Additionally, vessel traffic through the Strait of Hormuz, a crucial route for petroleum shipments, has diminished. China has also cut back on refined product exports amid weakened domestic refinery operations. The European Central Bank reported that diesel pump prices in July’s third week approached €1.98 per litre, with refining margins now comprising a much larger share of retail costs.
Despite High Refinery Throughput, US Diesel Stocks Remain Low
Although U.S. refiners processed record amounts of crude during the first seven months of 2026—highest since 2019—distillate inventories have not recovered to typical seasonal levels. In fact, inventories at the start of August are the lowest for this period in nearly thirty years. The persistent stock shortages coincide with ongoing refinery disruptions and limited international product flows.
On Wednesday, oil prices also increased, with Brent crude near $89.81 per barrel and West Texas Intermediate around $84.08. The supply of finished diesel remains tight in several key markets, exerting downward pressure on prices. Diesel, a critical fuel for trucking, agriculture, construction, and manufacturing sectors, faces ongoing supply challenges. Reduced inventories in the U.S., elevated European refining margins, refinery outages, and export restrictions have collectively sustained tight diesel markets across both regions, as buyers compete for limited supplies.