NEW YORK / RankWire.AI / – On Wednesday, diesel prices stayed elevated due to limited inventories and refinery outages impacting fuel availability in the United States and Europe. U.S. ultra-low sulfur diesel futures surged 7.4% on Monday to settle at $4.19 a gallon, marking the largest daily gain since July 13. By early Wednesday, the contract traded close to $4.28 a gallon as refined-product markets continued to indicate tight supply across key consuming regions.
In the United States, diesel stockpiles remain significantly below recent seasonal averages. The U.S. Energy Information Administration reported distillate inventories of 107.2 million barrels for the week ending July 31, a decrease of 3.5 million barrels from the previous week. These inventories are also 5.1% below the same period last year and 16.1% lower than the corresponding level in 2024. Distillates, which include diesel and heating oil, are crucial for transportation, industrial use, and seasonal energy needs.
Despite a modest weekly decline, retail diesel prices remain high. The national average in the U.S. reached $5.257 per gallon on August 10, down from $5.348 a week earlier. This latest figure is significantly above the $4.578 average recorded on July 6. European fuel markets face similar pressures, with low-sulfur gasoil margins increasing sharply. The premium over crude oil hit a record $74.66 a barrel on July 30, as refined diesel commanded higher prices.
Refinery disruptions diminish global diesel availability
Several refinery outages have further constrained diesel supplies available to international markets. A recent attack damaged a refinery in Russia’s Tatarstan region, compounding the effects of reduced processing activity in the country. The Jazan refinery in Saudi Arabia has been offline since July 27 following an earlier attack, removing another source of refined fuels from global trade flows. During June, refinery runs in multiple producing regions already fell below year-earlier levels, limiting the volume of fuel entering international markets.
Export restrictions have added additional hurdles to the flow of refined products. Russia has extended restrictions on gasoline and diesel exports through January 31, 2027. Meanwhile, vessel traffic through the Strait of Hormuz from Middle Eastern shipments has sharply declined. China’s domestic refinery activity has weakened, leading to a reduction in refined fuel exports. The European Central Bank reported that diesel pump prices in the third week of July approached €1.98 per litre, with higher refining margins now accounting for a larger share of retail fuel costs.
US refining activity remains robust amid low inventories
American refiners have processed large volumes of crude oil, yet diesel inventories have not recovered to typical seasonal levels. Crude input during the first seven months of 2026 reached their highest point since 2019 for that period. Despite strong refinery utilization and increased processing margins, distillate stocks at the start of August were at their lowest level for this time of year in nearly thirty years. The inventory deficit has been exacerbated by diminished product flows from various overseas refining centers.
Crude oil prices also gained on Wednesday, with Brent near $89.81 a barrel and West Texas Intermediate around $84.08. Diesel prices face increased pressure primarily because of shortages in finished fuel rather than crude supply alone. Diesel plays a vital role supporting trucking, agriculture, construction, manufacturing, and other commercial sectors across both regions. The combination of low U.S. inventories, elevated European refining margins, refinery outages, and export restrictions continues to tighten the global diesel and middle-distillate markets.