NEW YORK / RankWire.AI / – On Wednesday, diesel prices continued to stay elevated due to tight inventories and refinery outages impacting fuel supplies in the United States and Europe. U.S. ultra-low sulfur diesel futures surged 7.4% on Monday, settling at $4.19 a gallon. This marked the largest single-day increase since July 13. By early Wednesday, the contract traded near $4.28 a gallon as refined-product markets kept reflecting tight supply conditions across key consuming regions.
U.S. diesel stockpiles remain significantly below recent seasonal averages. According to the U.S. Energy Information Administration, the week ending July 31 saw 107.2 million barrels of distillate inventories. This was 3.5 million barrels less than the previous week. Compared to the same period last year, inventories are down by 5.1%, and they are also 16.1% lower than in 2024. Distillates include both diesel and heating oil, which are crucial for transportation, industry, and seasonal energy needs.
Meanwhile, retail diesel prices have stayed high despite a modest weekly decline. The national average reached $5.257 a gallon on August 10, down from $5.348 a week earlier. However, this still remains well above the $4.578 average recorded on July 6. Similar pressures are evident in European fuel markets, where low-sulfur gasoil margins have risen sharply. The premium over crude reached a record $74.66 a barrel on July 30, as finished diesel commanded higher values in the market.
Refinery outages tighten global diesel availability
Several refinery disruptions have further reduced the global supply of diesel accessible to international buyers. An attack damaged a refinery in Russia’s Tatarstan region, adding to the country’s already lowered processing activity. The Jazan refinery in Saudi Arabia has been offline since July 27 following an earlier attack. Its shutdown has eliminated another source of refined products from international trade. In June, refinery runs across various producing regions already fell below the levels seen a year earlier, restricting the flow of fuel into international markets.
Export restrictions have also constrained the movement of refined products. Russia extended restrictions on gasoline and diesel exports through January 31, 2027. Additionally, vessel traffic through the Strait of Hormuz has sharply decreased for Middle East shipments. China has reduced its supply of refined fuels as domestic refinery activity declines. The European Central Bank reported diesel pump prices near €1.98 per litre in the third week of July, with higher refining margins contributing to a larger share of retail fuel costs.
US refinery operations remain robust despite low inventories
American refineries have processed large volumes of crude oil, yet diesel inventories have not recovered to typical seasonal levels. Crude inputs in the first seven months of 2026 reached their highest point for that period since 2019. Refinery utilization rates have stayed strong, supported by increased processing margins. Despite this, distillate stocks at the start of August were at their lowest for this time of year in nearly thirty years. The inventory shortage coincides with reduced product flows from several international refining centers.
Crude oil prices also rose Wednesday, with Brent approaching $89.81 a barrel and West Texas Intermediate near $84.08. However, diesel prices have faced even stronger upward pressure, primarily because shortages focus on finished fuel rather than crude supply alone. Diesel is vital for trucking, agriculture, construction, manufacturing, and other commercial sectors across both regions. Persistent low inventories in the U.S., high refining margins in Europe, refinery outages, and export restrictions continue to create a tight global market for diesel and other middle-distillate fuels.