US diesel prices hit record $5.98/gallon, up $2.31 since Iran war start

US average diesel prices reached an all-time high of $5.98 per gallon as of September 10, up $2.31 since late February when the US and Israel launched a war against Iran. The surge reflects war-driven supply disruptions and refining constraints, with California prices even higher. This adds inflationary pressure on household goods and transport costs, signaling a sustained energy shock.