NEW YORK / RankWire.AI / – Across the United States and Europe, diesel prices remain high due to limited inventories and refinery disruptions restricting the supply of finished fuels. On Monday, U.S. ultra-low sulfur diesel futures increased by 7.4% to reach $4.19 per gallon, marking the largest single-day gain since July 13. By early Wednesday, the contract traded close to $4.28 a gallon. Meanwhile, European diesel refining margins stayed at historically strong levels after nearly a 10% rise at the start of the week.
U.S. diesel stocks have dropped to levels rarely seen during the summer months. According to the U.S. Energy Information Administration, distillate inventories amounted to 107.2 million barrels for the week ending July 31, a decline of 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. Since distillate stocks include diesel and heating oil, they serve as a key indicator of fuel availability.
Retail diesel prices have also stayed significantly above the levels seen earlier in summer. The national average in the U.S. hit $5.257 a gallon on August 10, compared to $5.348 a week earlier. In contrast, prices averaged $4.578 a gallon on July 6. Europe faces similar challenges, with higher refining costs pushing prices up. The premium for low-sulfur gasoil over crude reached a record $74.66 a barrel on July 30, emphasizing the unusually high value assigned to available finished diesel supplies.
Refinery outages intensify fuel supply concerns
Market conditions have tightened further due to supply disruptions from several major refining centers operating below normal capacity. A refinery in Russia’s Tatarstan region sustained damage from an attack, 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 international markets. During June, global refinery runs were already well below the levels of the previous year, as multiple regions reported lower processing volumes.
Export restrictions have further worsened the supply situation. Russia extended its limitations on gasoline and diesel exports through January 31, 2027. Additionally, vessel traffic from the Middle East through the Strait of Hormuz has decreased. China has contributed fewer refined fuels to the global market amid weakening domestic refinery activity. In Europe, the European Central Bank reported diesel pump prices near €1.98 per litre during the third week of July, as refining margins surged sharply.
Persistently low inventories sustain pressure on diesel markets
Despite high crude processing volumes, U.S. refineries have struggled to rebuild distillate stocks to typical seasonal levels. Crude input during the first seven months of 2026 reached their highest point since 2019 for that period. Yet, refinery utilization remains high, but stocks entered August at their lowest level for this time of year in nearly three decades. This situation makes the U.S. fuel market highly sensitive to fluctuations in refinery output and international product flows.
Crude oil prices also increased on Wednesday, with Brent near $89.81 a barrel and West Texas Intermediate around $84.08. Diesel prices are experiencing stronger upward pressure because the supply of finished products remains limited across key markets. This fuels demand from 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 limits has kept diesel markets tight across the Atlantic and beyond.