Diesel prices fall again, while gasoline prices rise across U.S. regions

Diesel prices have trended downward over the past month, providing fleets with some relief as gas prices continue to climb across U.S. regions.
Aug. 27, 2025
3 min read

Key takeaways

  • Diesel prices have steadily declined over the past month, easing some cost pressures for fleets.
  • Gas prices are climbing in most U.S. regions, adding variability to operating costs.
  • The West Coast remains the highest-cost region for diesel at $4.461 per gallon.

Continuing the monthlong trend, diesel prices dropped across the U.S., while gas prices climbed. The national average on-highway diesel price dropped 1 cent to $3.708, according to data released by the U.S. Energy Information Administration (EIA) on August 25. Gas prices rose 2 cents to $3.147. 

What are the current diesel prices across the U.S.?

Here are this week’s diesel price highlights from each region of the U.S.:

  • Gulf Coast: The biggest drop in diesel prices this week was seen off the Gulf Coast, falling 1 cent to $3.328.
  • Rocky Mountain: In the Rockies, diesel prices dropped 1 cent to $3.748.
  • East Coast: Off the East Coast, diesel prices dropped 1 cent to $3.726.
  • Midwest: In the Midwest, diesel prices dropped 0.4 cents to $3.698.
  • West Coast: Off the West Coast, diesel prices rose 1 cent to $4.461. Without including California, diesel prices rose 1 cent to $4.103.

According to AAA Motor Club (AAA), the current national diesel price average is $3.700. This is 1 cent lower than the EIA’s current estimate and 0.2 cents higher than this time last year.

See also: National diesel average drops to $3.71 per gallon, gas climbs slightly

What are the current gasoline prices across the U.S.?

The current national average on-highway gasoline price is $3.147, according to the EIA, 2 cents higher than last week’s average. 

Here are this week’s gasoline price highlights from each region of the U.S.:

  • Midwest: The biggest increase in gas prices this week was seen in the Midwest, rising 8 cents to $3.077.
  • West Coast: Off the West Coast, gas prices rose 6 cents to $4.106. Without including California, gas prices rose 4 cents to $3.838.
  • Rocky Mountain: In the Rockies, gas prices dropped 1 cent to $3.158.
  • East Coast: Off the East Coast, gas prices dropped 1 cent to $2.987.
  • Gulf Coast: Off the Gulf Coast, gas prices dropped 5 cents to $2.694.

According to AAA, the current national gasoline price average is $3.186. This is 4 cents higher than the EIA’s current estimate and 16 cents lower than this time last year.

In a recent press release, AAA said, “This past week, the national average for a gallon of regular fell three cents to $3.13. You’d have to go back to 2020 for a lower national average on August 21—that day, the price was $2.18. With gas prices for this day the lowest they’ve been in five years, some are wondering if the national average will go below $3 a gallon in the coming weeks. There are too many variables to make a prediction; the oil market is too volatile. But if crude oil prices remain low and barring any major geopolitical events or tropical storms hitting the Gulf Coast, it’s safe to say drivers could continue to see cheaper prices at the pump as summer winds down.”

About the Author

Jenna Hume

Digital Editor

Digital Editor Jenna Hume joined FleetOwner in November of 2023 and previously worked as a writer in the gaming industry. She has a bachelor of fine arts degree in creative writing from Truman State University and a master of fine arts degree in writing from Lindenwood University. She is currently based in Missouri. 

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