Why US Diesel Prices Hit Record Highs in Late 2026

Diesel prices by the numbers

The U.S. Energy Information Administration (EIA) reported that retail diesel averaged $6.29 per gallon in September 2026, calling it the highest nominal price recorded since the agency began publishing the series in 1994. The EIA's weekly survey put the price at $6.179 per gallon on October 12, 2026 — down about 2 cents from the previous week but up $2.514 from a year earlier.

Other outlets recorded similar but not identical figures on different days, which is normal given diesel's day-to-day volatility. CBS News reported a daily average of $6.53 per gallon in late September, a 77% increase from a year earlier, with Iowa reaching $6.57. Al Jazeera separately cited a Friday price of $6.50 per gallon, up from $5.61 a month earlier.

Why prices rose: crude costs and refining margins

According to the EIA, the retail diesel price is built from four components: the cost of crude oil, the refining margin (known as the 'crack spread'), and retail distribution costs and taxes. The EIA's Short-Term Energy Outlook said the 2026 run-up was driven by both higher crude prices — West Texas Intermediate averaged about $88 a barrel in 2026 versus $65 in 2025 — and an elevated crack spread.

Global supply disruptions add pressure

Several fetched sources point to disruptions far outside U.S. borders. CBS News reported that Russia banned diesel exports by its own producers in July 2026 amid Ukraine's attacks on the country's production facilities; Al Jazeera likewise reported that drone attacks had damaged major Russian refineries, forcing a cutback or halt in production. CBS News added that Russia normally supplies roughly one-ninth of the world's diesel. NBC News reported that diesel prices are up about 70% since a U.S.-Israeli strike on Iran on February 28, 2026, a conflict that CBS News said has also restricted Gulf-region shipping through the Strait of Hormuz.

The United States itself remains a net diesel exporter. CBS News reported that U.S. refineries produce about 5.3 million barrels of distillate a day against domestic demand of roughly 3.6 million barrels, and Al Jazeera said the U.S. typically exports close to 40% of its domestic consumption, making it the world's largest diesel exporter. The EIA said strong global export demand is limiting how much of that extra U.S. production stays at home.

Inventories near multi-decade lows

The EIA said U.S. distillate inventories stood 15.8 million barrels, or 13%, below the 2021–2025 seasonal average as of September 11, 2026. Al Jazeera, citing the same week, put the absolute stock level at 107.9 million barrels, which it described as the lowest for that time of year in more than 40 years. The East Coast region (PADD 1), which depends heavily on imports, was projected to remain 20% to 30% below its five-year average through the upcoming winter, according to the EIA's Short-Term Energy Outlook.

Washington's response: a Russian diesel deal and export-ban proposals

Facing the November 3, 2026 midterms, the Trump administration pursued two different approaches. On October 11, 2026, Trump announced that Russia would supply diesel to the U.S. — 300,000 tons immediately, 500,000 tons in November and 1 million tons afterward — under a Treasury General License, Newsweek reported. Eleven Republicans in total — including Senators Lisa Murkowski, Susan Collins and Dan Sullivan, and former Vice President Mike Pence — publicly objected, Newsweek reported, arguing the move conflicted with a 2022 ban on Russian energy imports adopted to limit funding for the war in Ukraine. Murkowski said Russia's return to global energy markets could be discussed only "once the war is over."

Energy analysts were skeptical the deal would move prices much. NBC News quoted Gulf Oil adviser Tom Kloza describing wholesale diesel's price spikes as 'absolutely stunning' and warning the retail record 'could be topped by the midterms.' NBC reported diesel futures rose 5% even after the Russia announcement, with analysts estimating the promised volumes amounted to less than two weeks of U.S. demand.

Separately, other Republicans — including Senators Chuck Grassley and Dan Sullivan and Representative Ashley Hinson — pushed for a U.S. diesel export ban, and Representative Tim Burchett introduced bills that would bar exports through January 2027 or trigger a ban automatically if prices exceed $5 a gallon, CBS News and Al Jazeera reported. GasBuddy analyst Patrick De Haan said an export ban was 'very likely to backfire,' since refiners facing a smaller export market could cut production instead of redirecting fuel domestically; Al Jazeera cited separate estimates of output cuts as large as 750,000 barrels a day. CBS News reported alternative measures under discussion, including extending a Jones Act waiver set to expire November 15 and temporarily waiving renewable-fuel blending mandates, which could lower prices by an estimated 10 to 20 cents a gallon.

Outlook

The EIA's Short-Term Energy Outlook projected retail diesel would stay above $6 a gallon through October 2026 before easing toward roughly $4.49 a gallon in 2027, assuming global refining and export disruptions ease. De Haan told NBC News that '$6/gal diesel may be here to stay' in the near term, with no clear relief yet for truckers and farmers.