UNITED STATES / RankWire.AI / – On September 5, the average price of diesel in the U.S. surged to a record-breaking $5.8819 per gallon, continuing a significant upward trend that has driven fuel costs well above levels from the previous year. One year earlier, diesel averaged $3.7123 a gallon. Meanwhile, regular gasoline was priced at $4.1459, compared to $3.2046 a year prior. This diesel figure exceeded the previous peak from June 2022 and marked a new high point for a fuel vital to U.S. freight and agriculture sectors.
Prices for diesel had already climbed to $5.85 a gallon on September 4 before advancing further the next day. The latest figure signifies an increase of over $2.16 from the same period last year. Although gasoline prices have also risen sharply, they remain below their June 2022 record. The faster ascent of diesel prices is driven by disruptions in global refining and shipping, which have tightened the supply of distillate fuels. Additionally, heightened seasonal demand from farming and freight activities has exerted additional pressure on the market during late summer.
U.S. Energy Information Administration reported a weekly national on-highway diesel average of $5.599 a gallon for the week ending August 31. Due to the Labor Day holiday, its upcoming weekly updates for gasoline and diesel are scheduled for September 9. Wholesale diesel prices across major U.S. trading hubs have remained elevated. Rising crude oil prices have increased refinery feedstock costs, while disruptions in international fuel flows have diminished the flexibility of global suppliers serving diesel markets.
Energy market strains drive diesel record higher
Oil prices increased again on September 7 amid renewed conflict involving the United States and Iran, which has disrupted shipping routes in the Gulf. Brent crude traded above $97 a barrel, while U.S. West Texas Intermediate crude surpassed $92. Tanker traffic through the Strait of Hormuz remained below recent averages, affecting the shipment of major oil and refined products from Gulf producers. Separate attacks on Russian refineries have also reduced processing capacity, constraining international supplies of diesel and other fuels.
According to AAA, the diesel average of $5.8819 recorded on September 5 is the highest in the organization’s data. The previous peak was $5.816 on June 19, 2022. California remains the most expensive major market, with diesel costing roughly $7.81 a gallon. The state also reported regular gasoline prices nearing $5.85. Variations in fuel costs across regions are primarily due to differences in taxes, refinery access, environmental regulations, and transportation distances from production centers to retail outlets.
Rising fuel prices impact freight and agriculture
Diesel is essential for the movement of goods within the United States. Heavy trucks depend on it for long-haul freight, while farms utilize it in tractors and various machinery. Construction equipment, delivery fleets, and some rail operations also consume large volumes. Consequently, the recent price surge increases operational expenses in multiple sectors of the economy. Retail diesel prices have risen in tandem with crude oil and wholesale fuel markets, reflecting tighter conditions across the entire petroleum supply chain.
This new record comes at a time when U.S. refiners are operating at high utilization rates, while global refinery disruptions limit additional supply. Although domestic crude production remains near historic highs, diesel prices are influenced by factors beyond crude availability, including refining capacity, inventories, shipping routes, and international product flows. As of September 5, the national diesel average was approximately 58% higher than a year earlier, making diesel one of the most rapidly rising major transportation fuels in the United States.