The national average retail price for on-highway diesel fuel fell 9.1 cents to $5.257 per gallon in the week ending August 10, according to the weekly survey published by the US Energy Information Administration on August 11.
The decline follows an increase the prior week, when the benchmark reached $5.348 per gallon. Diesel now sits $1.503 above the same week in 2025 and $1.553 above the level recorded two years ago.
Every EIA region posted a decrease. The Lower Atlantic saw the steepest drop at 13.4 cents, to $5.034 per gallon. East Coast prices fell 10.6 cents to $5.193, the Gulf Coast declined 9.7 cents to $5.044, and the Midwest eased 8.1 cents to $5.181. West Coast prices excluding California dropped 9.7 cents to $5.526.
California remains the most expensive market at $6.618 per gallon after a 9.8 cent decline. The Rocky Mountain region recorded the smallest change, easing 1.4 cents to $5.271, while New England fell 3.5 cents to $5.514.
Retail gasoline moved in the same direction. The national average for regular gasoline fell 7.3 cents to $4.006 per gallon, 88.8 cents above the year-earlier price.
The EIA diesel benchmark carries weight across trucking beyond its role as a fuel cost reading. Most freight contracts and broker fuel surcharge formulas are pegged to the weekly figure, so each Monday survey resets what carriers collect on loads for the week ahead. DAT Freight and Analytics reported average fuel surcharges of 62 cents per mile for van freight, 67 cents for reefer and 74 cents for flatbed in July, running 20 to 23 cents above July 2025.
The next EIA fuel price release is scheduled for August 18.
Source: US Energy Information Administration - https://www.eia.gov/petroleum/gasdiesel/