Diesel fuel prices during the week ending April 10 increased by 2.6 cents over the previous week, keeping the year’s flat run of prices going another week, according to the Department of Energy’s weekly report. Since the beginning of the year, diesel prices nationwide have fluctuated within a 6-cent range.

The average price of a gallon of on-highway diesel across the U.S. is now $2.582. During the last week, prices increased in all regions, with the most significant increase coming in the West Coast less California region, where prices rose 3.7 cents.

The highest fuel prices across the U.S. can be found in California at $2.935 per gallon, followed by the West Coast less California region at $2.772 per gallon.

The cheapest fuel can be found in the Gulf Coast region at $2.446 per gallon, followed by the Midwest region at $2.515 per gallon.

Prices in other regions, according to the DOE, are:

  • New England – $2.639
  • Central Atlantic – $2.761
  • Lower Atlantic – $2.516
  • Rocky Mountain – $2.64

ProMiles’ numbers during the same week had diesel prices increasing 3.3 cents to $2.535 per gallon nationwide.

According to ProMiles’ Fuel Surcharge Index, the most expensive diesel can be found in California at $2.908 per gallon, and the cheapest can be found in the Gulf Coast region at $2.445 per gallon.