War in Iran: Diesel Prices Soar in the United States, Setting a Historic Record

The price of diesel in the United States reached $6.4866 per gallon on September 19, 2026, reflecting an increase of about 75% compared to the previous year. This surge is linked to supply disruptions caused by the war between the U.S., Israel, and Iran, as well as Ukrainian attacks on Russian oil infrastructure. U.S. diesel stocks are under pressure, being 13% below the five-year average, while refining margins have reached record levels.