The average price of diesel fuel in the U.S. dropped slightly during the week of November 24, giving fleets a small break after several weeks of rising costs. According to the U.S. Energy Information Administration (EIA), the national average price fell 3.7 cents, landing at $3.83 per gallon.
This is down from $3.87, the highest price seen so far in 2025, but it still remains one of the most expensive weeks of the year.
Diesel has generally been on an upward trend throughout 2025. Prices started the year at $3.56 per gallon and have continued to fluctuate but mostly increase over time. Even with this recent dip, diesel remains 2.9 cents higher than the same week last year.
Regional Diesel Price Breakdown
Diesel costs vary widely depending on the region, and the latest update shows the usual pattern:
- Gulf Coast: $3.46 per gallon — the cheapest region
- California: $4.98 per gallon — the most expensive region
These differences stem from factors like local refinery access, state taxes, and environmental regulations.
What Makes Up the Price of Diesel?
A Department of Energy breakdown shows the main components affecting diesel prices:
- Crude oil costs: The biggest factor and often the most unpredictable
- Refining costs: Impacted by refinery outages, maintenance, and production capacity
- Distribution and marketing: Transport and retail costs
- Taxes: Federal and state fuel taxes, which vary widely
Because diesel is a major operating cost for trucking fleets, even small changes in price can impact profit margins, especially during a weak freight market.
What to Expect Heading Into Winter
Although prices dipped this week, analysts warn that diesel could still be volatile as winter approaches. Cold weather, refinery maintenance, and global conflicts can push prices up quickly.
For now, fleets can appreciate the small drop — but they should continue planning for an unpredictable fuel market as 2025 comes to a close.
Source:
https://www.truckinginfo.com/10251075/diesel-prices-down-slightly
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