NEW YORK / RankWire.AI / – Throughout recent weeks, diesel prices have remained persistently high across the United States and Europe, driven by tight inventory levels and refinery disruptions that have constrained the availability of refined fuel. On Monday, U.S. ultra-low sulfur diesel futures surged by 7.4% to reach $4.19 a gallon, marking the biggest single-day increase since July 13. By early Wednesday, the contract hovered around $4.28 a gallon. Meanwhile, European diesel refining margins stayed at historically elevated levels after nearly a 10% gain at the week’s start.
In the United States, diesel stockpiles have dropped to some of the lowest summer levels observed in recent years. According to the U.S. Energy Information Administration, distillate inventories totaled 107.2 million barrels for the week ending July 31, reflecting a decrease of 3.5 million barrels from the previous week. These stocks are now 5.1% below last year’s figures and 16.1% beneath the levels recorded in 2024. Since distillates include diesel and heating oil, these figures are crucial indicators of fuel supply availability.
Retail diesel prices in the U.S. have also stayed well above summer averages. The nationwide average hit $5.257 a gallon on August 10, slightly down from $5.348 a week earlier, which itself was higher than the $4.578 per gallon averaged on July 6. Europe faces similar pressures, with refining costs rising. The premium for low-sulfur gasoil over crude hit a record $74.66 a barrel on July 30, underscoring the exceptional value placed on available finished diesel supplies.
Refinery shutdowns intensify fuel supply concerns
Disruptions in supply have further tightened the market as multiple key refining facilities operate below normal capacity. A refinery in Russia’s Tatarstan region suffered damage from an attack, adding to the decline in Russian processing activity. Since July 27, Saudi Arabia’s Jazan refinery has remained offline after an earlier attack, removing another source of refined products from international trade. During June, global refinery runs were already significantly below the levels seen a year earlier, with various regions reporting decreased processing volumes.
Export restrictions have intensified the impact of these outages. Russia extended limits on gasoline and diesel shipments through January 31, 2027. Additionally, vessel traffic through the Strait of Hormuz from the Middle East has slowed. China has contributed less refined fuel to global markets amid weakening domestic refinery activity. In Europe, the European Central Bank noted diesel pump prices near €1.98 per litre during the third week of July, with refining margins rising sharply.
Low stockpiles sustain pressure on diesel markets
In the United States, despite processing high volumes of crude oil, refinery stocks remain constrained. Crude inputs in the first seven months of 2026 reached their highest point for that period since 2019. Yet, high refinery utilization has not replenished distillate inventories to typical seasonal levels, which entered August at their lowest point for this time of year in nearly thirty years. This shortage leaves the U.S. fuel market highly vulnerable to fluctuations in refinery output and international product flows.
Crude oil prices also increased on Wednesday, with Brent nearing $89.81 a barrel and West Texas Intermediate around $84.08. The upward pressure on diesel prices persists because supplies of finished products remain tight across multiple key markets. Diesel plays a vital role in trucking, agriculture, construction, manufacturing, and other commercial sectors. The combination of low U.S. inventories, elevated European refining margins, refinery outages, and export restrictions has maintained a tight diesel market on both sides of the Atlantic.