NEW YORK / RankWire.AI / – Diesel markets remained under pressure Wednesday as low inventories and refinery disruptions tightened fuel supplies across the United States and Europe. U.S. ultra-low sulfur diesel futures had surged 7.4% on Monday to $4.19 a gallon. That was the contract’s strongest daily increase since July 13. Prices traded near $4.28 early Wednesday. European diesel refining margins also remained elevated after gaining almost 10% at the start of the week.
U.S. distillate inventories fell sharply in the latest official weekly data. The U.S. Energy Information Administration reported stocks of 107.2 million barrels for the week ended July 31. That represented a decline of 3.5 million barrels from the previous week. Inventories stood 5.1% below year-earlier levels and 16.1% below the comparable 2024 period. The category includes diesel and heating oil, making it an important measure of available middle-distillate supply in the domestic fuel market.
Retail diesel prices remained high despite easing slightly from the previous week. The national U.S. average stood at $5.257 a gallon on August 10, down from $5.348 one week earlier. It remained far above the $4.578 average recorded on July 6. European markets have faced similar pressure. The premium for low-sulfur gasoil over crude reached a record $74.66 a barrel on July 30, showing the sharp rise in the value of finished diesel compared with crude oil.
Refinery disruptions tighten global product flows
Refinery outages have reduced the amount of diesel and other fuels available for international trade. An attack damaged a refinery in Russia’s Tatarstan region and added to lower Russian processing activity. Saudi Arabia’s Jazan refinery has remained offline since July 27 following an earlier attack. The shutdown removed additional refined-product capacity from the market. Global refinery runs were already below year-earlier levels in June as lower processing activity affected several major fuel-producing regions.
Export restrictions have also limited supply. Russia extended curbs on gasoline and diesel exports through January 31, 2027. Middle East shipments have faced lower vessel traffic through the Strait of Hormuz, a major route for petroleum trade. China has also supplied fewer refined products as domestic refinery activity weakened. The European Central Bank reported diesel pump prices near €1.98 per litre during the third week of July, while refining margins accounted for a much larger share of retail costs.
High refinery output fails to rebuild US stocks
U.S. refiners have processed large amounts of crude, but distillate inventories remain unusually low. Crude inputs during the first seven months of 2026 reached their highest level for that period since 2019. Strong refinery utilization has not restored diesel stocks to typical seasonal levels. Inventories entered August at their lowest point for this time of year in about three decades. The tight stock position has coincided with reduced international product flows and persistent refinery disruptions.
Oil prices also moved higher Wednesday, with Brent near $89.81 a barrel and West Texas Intermediate around $84.08. Diesel has faced heavier pressure because supplies of finished fuel remain constrained in several major markets. The fuel is widely used in trucking, agriculture, construction and manufacturing. Low U.S. inventories, high European refining margins, refinery outages and export limits have kept diesel markets tight across both regions as buyers compete for available refined products.