Diesel prices in 2026 directly impact your load profitability. Calculate your exact fuel cost per mile and per trip using current 2026 diesel prices.
Diesel prices in 2026 have remained volatile, with the national average fluctuating between $3.80 and $4.60/gallon depending on the quarter and region. The DOE/EIA publishes weekly retail diesel prices — always use the current regional price for accurate load cost calculations.
For owner-operators in 2026, fuel typically represents 25-35% of gross revenue. At $4.00/gallon with a 6.5 MPG average, fuel costs $0.615 per mile loaded. At 100,000 miles per year, that's $61,500 in annual fuel expense — the single largest variable cost in your operation.
Top strategies for reducing fuel costs include: maintaining tire pressure (1 PSI low = 0.4% MPG loss), reducing idle time (1 hour of idle = approximately 0.8 gallons), using fuel cards for discounts (Comdata, EFS, and ATBS cards typically save $0.15-0.30/gallon), cruise control on highways, and strategic fuel stop planning to buy in lower-tax states.