NEW YORK / RankWire.AI / – Across the United States and European markets, diesel prices have remained elevated due to limited inventories and refinery disruptions that have constrained the supply of finished fuel. On Monday, U.S. ultra-low sulfur diesel futures increased by 7.4% to reach $4.19 a gallon, marking the most significant daily rise since July 13. By early Wednesday, the contract hovered near $4.28 a gallon. Meanwhile, European diesel refining margins stayed near historic highs, with an almost 10% gain at the beginning of the week.
The U.S. has experienced a significant drop in diesel inventories, reaching levels seldom observed during the summer months. According to the U.S. Energy Information Administration, distillate stocks for the week ending July 31 stood at 107.2 million barrels, down 3.5 million barrels from the previous week. This figure is 5.1% lower than the same period last year and 16.1% below the corresponding level in 2024. Stocks in the distillate category include diesel and heating oil, making them an essential indicator of fuel availability.
Retail diesel prices have also remained significantly above summer levels seen earlier. The national average in the U.S. hit $5.257 per gallon on August 10, compared to $5.348 one week earlier. In July, prices averaged $4.578 per gallon on the 6th. European markets face similar pressures, driven by rising refining costs. The premium for low-sulfur gasoil over crude oil reached a record of $74.66 per barrel on July 30, underscoring the high value placed on finished diesel supplies.
Refinery outages intensify fuel supply concerns
The market has been further strained by disruptions in supply caused by several key refineries operating below normal capacity. Damage from an attack affected a refinery in Russia’s Tatarstan region, adding to the decline in Russian processing activity. The Jazan refinery in Saudi Arabia has remained offline since July 27 following an earlier attack, removing another source of refined products from global trade. During June, refinery operation levels worldwide were already significantly below those of the previous year, as many regions experienced lower processing volumes.
The situation has been worsened by export restrictions. Russia extended its limitations on gasoline and diesel shipments through January 31, 2027. Additionally, vessel traffic from the Middle East through the Strait of Hormuz has decreased. China has also contributed less refined fuel to global markets due to weakened domestic refinery activity. In Europe, the European Central Bank reported that diesel pump prices approached €1.98 per litre during the third week of July, amid sharply rising refining margins.
Low stockpiles exert ongoing pressure on diesel markets
Despite high crude processing levels, U.S. refineries have struggled to rebuild distillate inventories to typical seasonal levels. Crude input during the first seven months of 2026 was at its highest since 2019 for that period. However, refinery utilization rates have not been sufficient to restore stocks, which entered August at their lowest point for this time of year in nearly three decades. This situation makes the U.S. fuel market particularly vulnerable to fluctuations in refinery output and international product flows.
Crude oil prices continued to climb on Wednesday, with Brent crude near $89.81 a barrel and West Texas Intermediate around $84.08. The surge in diesel prices is more pronounced because the supply of finished products remains tight across multiple key markets. Diesel fuels vital sectors such as trucking, agriculture, construction, and manufacturing. The combination of limited U.S. inventories, high European refining margins, refinery outages, and export restrictions has kept diesel markets constrained on both sides of the Atlantic.