U.S. Diesel Prices Return Above $5 per Gallon, Up 33% Since Iran Conflict

Diesel fuel in the United States crossed the $5 per gallon mark in March. This price level marks a return to the $5 threshold after earlier peaks. The increase represents roughly a 33 percent rise since the Iran war. Analysts link the jump to renewed hostilities in the Persian Gulf. The conflict has disrupted shipping routes for crude oil. At the same time, U.S. refinery capacity has been reduced. Lower refinery output limits domestic diesel supply. Together, the geopolitical tension and supply constraints are pushing prices higher.