Middle East Tensions Trigger Sharp Diesel Price Surge for Fleets

Key Details Diesel prices jumped sharply following military escalation in the Middle East, with the U.S. and Israel launching air strikes on Iran on February 28. The national average on-highway diesel price reached $3.897 per gallon on March 2, up 8.8 cents week-over-week and 18.6 cents over two weeks, according to Energy Information Administration data. Why It Matters Contract carriers are already feeling pressure as weekly fuel surcharge adjustments lag behind rising pump prices. Spot freight carriers face even sharper pain as operating expenses surge unexpectedly. Fuel cost relief that industry observers predicted for 2026 is not materializing as geopolitical tensions strengthen global oil markets. Supply Chain Risk Iran has closed the Strait of Hormuz and threatened to sink tankers carrying crude, LNG, and refined products. According to Wood Mackenzie, 15 percent of global oil demand and 20 percent of global LNG supply typically transit this critical waterway. S&P Global warns this could trigger the largest oil supply disruption in history. What's Ahead Diesel markets are more sensitive to shipping disruptions than crude oil or gasoline, according to GasBuddy analysis. Diesel prices are expected to continue rising into the week of March 9 due to tighter supply and strong distillate demand. Gasoline and crude prices may decline first as the market adjusts to the new supply reality.