Diesel Prices Fell This Week. Is Your Freight Quote Keeping Up?
Monday, October 12, 2026
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The U.S. Energy Information Administration’s October 6 update put the national average retail price for on-highway diesel at $6.199 per gallon for October 5. That was 18.3 cents lower than the prior week. In the Lower Atlantic region, the average fell 25.4 cents to $5.699 per gallon.
That movement matters to freight buyers, but it does not automatically produce the same change on every freight invoice. EIA publishes the price data; it does not calculate, assess, or regulate diesel fuel surcharges. Those terms are set privately between shippers and transportation providers, and each company may use a different method.
Before you compare quotes, check how the fuel component is built.
1. Identify the index behind the surcharge
Ask which published diesel price the quote uses. EIA reports national and regional averages, and the number in a fuel-surcharge schedule may be tied to one specific geography.
A quote that references the national average is not using the same starting point as one tied to a regional average. Record the index name and geography so you can compare the quotes on the same basis.
2. Confirm the price date and effective period
EIA’s weekly diesel estimate reflects cash, self-service pump prices, including taxes, observed at sampled outlets as of 8:00 a.m. local time on Monday. EIA generally publishes the average on Tuesday morning, or Wednesday after a government holiday.
A transportation provider may apply that published number immediately, the following week, or according to another timing rule in the agreement. Ask which EIA release date applies to the shipment and when a new value becomes effective.
3. Ask for the formula or surcharge table
Do not assume that a lower weekly diesel average will create an equal reduction in the charge. Ask for the formula or table that converts the selected index into the surcharge.
Confirm any base price or trigger, the calculation step, and how the result is rounded. If the charge is expressed as a percentage, per-mile amount, or flat shipment amount, make sure you know which cost or mileage figure it applies to.
4. Match the surcharge to the shipment details
Fuel is only one part of the quoted cost. Verify the shipment date, origin, destination, equipment or service type, weight, dimensions, and any planned stops. Then confirm that the fuel calculation uses the same route and shipment assumptions as the base quote.
If pickup moves into another pricing week, ask whether the fuel surcharge will be recalculated. A quote can appear stable while its fuel component remains subject to change.
5. Compare the all-in amount
Put each quote into the same simple structure:
• Base transportation charge
• Fuel surcharge
• Known accessorial charges
• Total quoted amount
• Quote expiration date
• Items that remain subject to change
The lowest base rate is not necessarily the lowest total. A visible all-in comparison also makes it easier to spot when two providers are using different fuel assumptions.
A short fuel-surcharge checklist
Before accepting a freight quote, ask:
• Which diesel index and geography does the surcharge use?
• Which published date controls the calculation?
• What formula or table converts the index into the charge?
• What shipment details or mileage does the calculation assume?
• Will the surcharge change if the pickup date changes?
• Which charges are included in the quoted total, and which are not?
One lower-price week is useful information, but it is not a substitute for reading the quote terms. EIA’s October Short-Term Energy Outlook also cautions against treating one weekly move as a lasting trend: it expects distillate inventories to remain below the 2021–2025 average and retail diesel prices to stay above $4 per gallon through 2027.
Ready to compare pricing for an upcoming shipment? Request a Freight Quote:
https://www.logisticsworldwide.com/home/request-a-quote/
For ongoing shipping, request a shipping account:
https://www.logisticsworldwide.com/home/request-account/
Sources
EIA Gasoline and Diesel Fuel Update, released October 6, 2026
EIA FAQ: How do I calculate diesel fuel surcharges?
EIA methodology for weekly on-highway diesel estimates
EIA October 2026 Short-Term Energy Outlook
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