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Trump's Iran war sends US diesel prices to record high

CNBC · Financial Times · BBC · 8 sources · first seen 01.09.2026 · updated 05.09.2026

The cost of diesel fuel crucial to American industry has risen above the 2022 peak to an all-time high of $5.85 per gallon (with an August monthly national average of $4.07), surging 17 cents in two days amid ongoing military conflict with Iran, threatening a new inflationary burst ahead of November elections.

  • US diesel prices surpassed the 2022 peak.
  • Rising fuel costs threaten an inflationary surge ahead of November elections.
  • Average diesel price reached $5.85 per gallon, topping the 2022 record.
  • Diesel prices surged 17 cents in two days.

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Trump's Iran war sends US diesel prices to record high — yoteki