NEW YORK / RankWire.AI / – Elevated diesel prices persist across the United States and Europe, driven by limited inventories and refinery disruptions that restrict the availability of refined fuel. U.S. ultra-low sulfur diesel futures increased 7.4% on Monday to reach $4.19 a gallon, marking the largest single-day rise since July 13. Early Wednesday saw the contract hover near $4.28 a gallon. Meanwhile, European diesel refining margins stayed at historically strong levels after nearly a 10% gain at the start of the week.
Diesel inventories in the U.S. have fallen to summer-low levels seldom seen in recent years. According to the U.S. Energy Information Administration, distillate stocks amounted to 107.2 million barrels for the week ending July 31, a reduction of 3.5 million barrels from the previous week. This figure is 5.1% below the same period last year and 16.1% below the comparable level in 2024. Since distillate stocks include diesel and heating oil, they serve as a crucial indicator of fuel supply conditions.
Retail diesel prices have also remained significantly higher than early summer levels. On August 10, the U.S. national average rose to $5.257 a gallon, up from $5.348 a week earlier. In contrast, prices averaged $4.578 a gallon on July 6. Europe faces similar pressures, with higher refining costs pushing prices up. The premium for low-sulfur gasoil over crude hit a record $74.66 a barrel on July 30, underscoring the high value currently assigned to finished diesel supplies.
Refinery outages intensify fuel supply concerns
Market tightness has worsened as several key refineries operate below normal capacity due to disruptions. An attack damaged a refinery in Russia’s Tatarstan region, adding to the decline in Russian processing activity. Since July 27, Saudi Arabia’s Jazan refinery has remained offline following an earlier attack, removing another source of refined products from the international market. Global refinery operations during June were already well below the levels seen a year earlier, with multiple regions reporting reduced processing volumes.
Additional export restrictions have compounded these supply issues. Russia extended its limits on gasoline and diesel exports through January 31, 2027. Export activity from the Middle East has also decreased due to lower vessel traffic through the Strait of Hormuz. Moreover, China’s contribution of refined fuels to global markets has diminished as domestic refinery activity slowed. In Europe, the European Central Bank reported diesel pump prices near €1.98 per litre during the third week of July, with refining margins rising sharply.
Limited inventories continue to pressure the diesel market
Despite high crude processing volumes, U.S. refineries have not replenished distillate stocks to typical seasonal levels. Crude intake during the first seven months of 2026 reached its highest point since 2019 for that period. Nevertheless, refinery utilization remains high, yet inventories entered August at their lowest levels for this time of year in nearly thirty years. This situation leaves the U.S. fuel market 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 higher prices for diesel are due to limited supply of finished products across major markets. Diesel is crucial for sectors such as trucking, agriculture, construction, manufacturing, and other commercial activities. The combination of low U.S. inventories, elevated European refining margins, refinery outages, and export restrictions has kept diesel markets tight on both sides of the Atlantic.