U.S. Average Diesel Prices Cross $6 a Gallon for First Time, GasBuddy Says
By sterlingashworth // 2026-09-13
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The U.S. national average price of diesel surpassed $6 a gallon for the first time on Thursday, Sept. 10, 2026, according to price tracker GasBuddy, as the U.S.-Israeli war on Iran and Ukrainian attacks on Russia's refineries squeezed supply [1]. AAA data confirmed the milestone the following day, with the national average hitting $6.06 a gallon on Sept. 11, up from $5.98 the previous day [2]. The record exceeds the prior peak of $5.82 per gallon set on June 17, 2022, in the aftermath of Russia's invasion of Ukraine [3]. The surge in fuel costs is adding to inflationary pressures that have already strained consumers and businesses this year, creating a political challenge for President Donald Trump [1].

Price Data and Regional Variation

The weekly Department of Energy/Energy Information Administration average retail diesel price rose 36.8 cents a gallon to $5.967 a gallon, published Wednesday but effective Monday, Sept. 8, according to FreightWaves. The number was delayed a day due to the Labor Day holiday [4]. The benchmark diesel price used for most fuel surcharges had already reached its highest level since military action commenced against Iran in early March, rising 19.8 cents a gallon to $5.652 a gallon in late August [5]. Prices varied widely by region. In California, diesel prices were nearly $7.71 per gallon, according to AAA, while San Francisco surpassed $8 per gallon in April 2026, marking the first time any U.S. city had reached that threshold [6][7]. The West Coast and Northeast consistently showed prices above $6 per gallon, while the Gulf Coast remained lower, according to GasBuddy data. Industry groups note that diesel is a key input for trucking, farming, rail and construction. The U.S. Energy Information Administration has reported that diesel prices surged 42.8% while gasoline prices increased 25% since the start of a prior price cycle, according to government data [8].

Factors Behind the Increase

Analysts attributed the rise to a convergence of supply-side pressures. Damage to Russian refinery capacity and diesel export halts linked to the Russia-Ukraine war, ongoing disruption at the Strait of Hormuz, expanding threats to Red Sea shipping, and renewed Chinese buying have combined to tighten global refined-fuel markets [9]. Brent crude futures breached $100 a barrel on Wednesday, Sept. 9, for the first time since July 24 as escalating attacks in the Middle East, including on tankers, stifled hopes of a normalization of oil shipping in the region [10]. Goldman Sachs noted that EU climate regulations forced energy companies to shut down refining capacity in anticipation of demand destruction that has yet to materialize. Rising strikes on refineries in the Middle East and Russia have further constrained already-stretched global refining capacity, pushing refiners' profits higher [11]. Seasonal demand for heating oil and agricultural diesel added pressure ahead of the fourth quarter. Piper Sandler global energy strategist Jan Stuart wrote in a note on Friday that the physical oil market is flashing major warning signs, including disrupted exports, depleted inventories, and an ongoing diesel shortage crisis, all converging ahead of stronger fourth-quarter demand [12].

Economic Impact

Higher diesel costs are expected to raise freight rates and consumer prices for goods. Because diesel powers freight and delivery networks, as well as agricultural machinery, the high costs of fuel will impact a long list of everyday goods [6]. The trucking industry relies heavily on diesel fuel to deliver food and other supplies from warehouses to retail stores; as diesel becomes more expensive, so will the cost for consumers to eat and live [13]. Less-than-truckload carrier Old Dominion Freight Line reported that diesel fuel prices increased 46% year over year in August compared with a 31% year-over-year increase in July. Fuel was up 10% sequentially in August [14]. ArcBest reported similar pressures, with diesel fuel prices up 46% year over year in August versus a 31% year-over-year increase in July [15]. Small carriers and independent truckers may face margin pressure. Uber Freight released its Q3 Market Update & Outlook Report, saying truckload conditions have begun to stabilize after two quarters of rate inflation, but capacity constraints continue to ripple through less-than-truckload, intermodal, and dedicated segments [16]. Higher fuel costs add to broader inflation measures. Headline producer prices rebounded significantly from July's flatline as oil prices rebounded on re-escalations in the Middle East, and they printed right in line, up 0.4% month over month [17].

Reactions and Policy Debate

Energy Secretary Chris Wright has blamed Ukraine and the Biden administration for record-high diesel prices, according to statements carried on Brighteon [18]. Some analysts called for increased domestic refining and energy production. Former Goldman Sachs commodities chief Jeff Currie warned that the latest Brent crude rally above $107 a barrel is becoming harder to dismiss as a temporary shock, with renewed Chinese buying and soaring refining margins—the U.S. diesel crack spread now $110 a barrel—signaling deeper pressure across physical commodity markets [19]. U.S. officials did not immediately comment on specific policy responses, according to Reuters [1]. Consumer advocacy groups said the price affects household budgets, especially in rural areas. Farmers have struggled to make ends meet while producing food as diesel prices climb; Pennsylvania farmer Kyle Kotzmoyer told state lawmakers he could not afford the diesel fuel needed to run his tractor, warning that if his operation failed, it would affect the food supply [20]. Polish opposition politician Mariusz Błaszczak warned in a social media post that "We will soon see increases in product prices as well," adding that diesel is the most expensive ever and that this may be just the beginning [21].

Outlook

GasBuddy projected prices could remain elevated in the near term unless refinery output rises or crude costs decline. Vitol's chief executive warned of a global fuel squeeze as refineries max out, leaving little room for more chaos, with the late-summer squeeze threatening to extend into fall and winter [22]. Market participants will watch weekly inventory data and OPEC+ meetings for direction. The benchmark diesel price used for most fuel surcharges is at its highest level since military action commenced against Iran in early March, and after increasing for 12 out of the past 14 weeks, few signs point to an imminent reversal [5]. Further price movements will depend on supply, demand, and geopolitical developments, including the trajectory of the U.S.-Israeli war on Iran and Ukrainian strikes on Russian energy infrastructure [3][1]. As energy analyst Chris Martenson has noted, the current energy shock involves actual destruction of supply chains and production facilities, impacting every sector globally [23].

References

  1. Middle East Eye. "US diesel prices surpass $6 a gallon for first time as oil hits highest since May". September 11, 2026.
  2. The Epoch Times. "Diesel Prices Hit All-Time High Above $6 Amid Global Supply Woes". September 11, 2026.
  3. NaturalNews.com. "U.S. Diesel Pump Prices Reach Record High as Refined-Products Supply Tightens". September 7, 2026.
  4. FreightWaves. "$5 average looms as diesel benchmark hits record". September 9, 2026.
  5. FreightWaves. "Benchmark diesel price is now highest since war began". August 25, 2026.
  6. Just the News. "Diesel prices hit record highs, pushing up costs for a variety of goods as shipping costs rise". September 4, 2026.
  7. Sterling Ashworth. "Diesel Prices Exceed $8 Per Gallon in San Francisco as Supply Disruptions Affect California". NaturalNews.com. April 7, 2026.
  8. NaturalNews.com. "No signs of slowing down: Diesel price jumps 42.8% from the beginning of the year, way ahead of gasoline's 25% increase". May 1, 2022.
  9. ZeroHedge. "Dies-aster: California Diesel Nears $10 A Gallon As Global Fuel Crisis Deepens". September 11, 2026.
  10. NTD. "Oil Rises Above $100 a Barrel as Middle East Conflict Intensifies". September 9, 2026.
  11. Watts Up With That. "Climate Regulations Crushed Western Oil Refineries. Now Goldman Sachs Predicts a Diesel Crisis". September 4, 2026.
  12. ZeroHedge. "Piper Sandler Sounds Alarm: Shrinking Oil Buffers To Collide With Winter Demand". September 11, 2026.
  13. NaturalNews.com. "Supply chain on the brink of COLLAPSE as diesel price surge hits trucking industry hard". May 5, 2022.
  14. FreightWaves. "Uber Freight warns tight capacity could fuel Q4 freight rate surge". September 11, 2026.
  15. FreightWaves. "Old Dominion's August: Some good, some OK". September 3, 2026.
  16. FreightWaves. "ArcBest sees August tonnage growth accelerate; raises Q3 asset-light guide". September 9, 2026.
  17. ZeroHedge. "Rate-Hike Odds Spike As Fuel Costs Push US Producer Prices Higher". September 10, 2026.
  18. Brighteon. "Energy SEC Chris Wright Blames Ukraine & Biden for record high diesel prices - clip 2". September 6, 2026.
  19. ZeroHedge. "Old Economy Is Taking Revenge: Jeff Currie Warns Fuel Squeeze Is Driving Structural Inflation". September 11, 2026.
  20. NaturalNews.com. "As economy reels from gas price hikes Biden proposes gas tax holiday". June 23, 2022.
  21. RMX News. "'Diesel the most expensive ever! This may be just the beginning'". September 10, 2026.
  22. ZeroHedge. "It's Pretty Tight: Vitol Chief Warns Of Global Fuel Squeeze As Refineries Max Out". September 8, 2026.
  23. Chris Martenson. "Energy Shock Inflation And Market Complacency What Wins". PeakProsperity.com. April 3, 2026.

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