US Diesel Prices Surge to Record $5.85/Gallon Amid Global Refined Products Squeeze

US retail diesel prices reached an all-time high of $5.85 per gallon on or around September 4, 2026, according to AAA data, surpassing the previous peak from June 2022. This surge stems from disruptions in the Strait of Hormuz due to the ongoing US-Iran conflict and Ukrainian drone strikes on Russian energy infrastructure, which have severely constrained global supplies of refined products like diesel rather than crude oil itself.

Mainstream outlets including The Washington Post, Wall Street Journal, New York Times, Bloomberg, BBC, and Financial Times confirm the record, noting that diesel powers critical sectors including trucking, construction, agriculture, and heating. The refined-products crisis has widened crack spreads, with heating oil/crude differentials exceeding $100 per barrel. Refineries are operating near or above capacity with limited spare room, while stockpiles of distillates are at seasonal lows.

Beyond immediate pump prices, analysts highlight risks of cascading inflation through supply chains as harvest and heating seasons approach. A global refining crunch—exacerbated by damaged facilities in the Middle East and Russia—could sustain elevated fuel prices well into 2027, even if crude flows recover. This divergence between crude surpluses and product shortages underscores diesel's outsized role in industrial activity, potentially pressuring manufacturers, retailers, and consumers with higher costs for goods and services over the next 12 months.