US diesel prices hit record highs near $5.85 a gallon amid Iran conflict

WASHINGTON - U.S. retail diesel prices climbed to record territory this week, with AAA data putting the national average near $5.85 a gallon and above the previous peak set in June 2022, according to BBC, Bloomberg and Reuters reports.

Diesel has risen sharply since late February as the conflict with Iran disrupted Middle East shipping and Ukrainian strikes hit Russian refining capacity, reducing a major source of diesel exports. GasBuddy said 2026 is on track to be the most expensive year for U.S. diesel on record. Distillate stockpiles have run unusually low for this season, Energy Information Administration data show.

Diesel powers much of the trucking fleet that moves groceries, building materials and farm products. Higher pump prices therefore feed into consumer goods even for households that drive gasoline cars. Farmers also face higher fuel bills for equipment during harvest season.

Vice President JD Vance told reporters the Iranian regime has targeted oil tankers moving through the Strait of Hormuz and said prices could have been higher without U.S. efforts. President Trump has pressed refiners to boost domestic diesel and gasoline output as cost-of-living concerns rise ahead of November elections, according to White House accounts reported in the coverage.

Analysts warn seasonal farm and heating demand could keep pressure on distillates into fall. Some energy consultants have suggested regulatory flexibility for refiners and continued protection for tanker traffic as ways to ease the crunch. For readers, the near-term signal is higher freight costs and sticky prices on goods that ride diesel trucks, not only the number on the diesel pump itself.