The US Energy Information Administration reported that the national average retail price of on-highway diesel stood near 4.83 dollars per gallon for the week of June 22, 2026, keeping fuel among the largest variable costs for motor carriers. The agency publishes the figure each week as part of its gasoline and diesel fuel update.
Diesel remains a central line item in fleet operating budgets, and sustained prices above four and a half dollars per gallon pressure margins for carriers that cannot fully recover costs through fuel surcharges. Owner-operators and small fleets are typically the most exposed because they have less leverage to pass higher fuel costs to shippers.
The weekly survey covers retail locations across the country and feeds the fuel surcharge formulas that many shippers and carriers use to adjust freight bills. Energy analysts have linked firm diesel prices to refinery supply constraints and steady distillate demand. The EIA scheduled its next weekly price release for June 30, 2026. Fleets often track the weekly series closely because even small per-gallon moves translate into significant annual cost changes across high-mileage operations.
Source: U.S. EIA - https://www.eia.gov/petroleum/gasdiesel/