U.S. Diesel Prices Surge 32 Cents in a Single Week
On-highway diesel costs jumped to 6.285 dollars per gallon on September 14, marking a 31.8 cent weekly increase.
The Energy Information Administration reported a sharp rise in fuel costs on September 15, 2026. On-highway diesel averaged 6.285 dollars per gallon on September 14. This figure represents a 0.318 dollar increase from the previous week. Regular gasoline also climbed to 4.319 dollars per gallon. The weekly gain for gasoline was 0.162 dollars. These figures reflect a broader upward trend in U.S. fuel markets. The next update is scheduled for September 22, 2026. Data from GN auto markets/energy: gasoline prices confirms these regional shifts.
Diesel prices have risen significantly compared to prior periods. The year-ago change for diesel stands at 2.546 dollars. The two-year change is 2.759 dollars. Regular gasoline shows a year-ago increase of 1.151 dollars. The two-year change for gasoline is 1.139 dollars. These long-term trends indicate sustained price pressure. Drivers face higher costs for both passenger and commercial vehicles. The data covers the United States total and specific districts.
Regional Gasoline Prices Vary Widely
West Coast prices remain the highest in the nation. The region averaged 5.467 dollars per gallon on September 14. California specific prices reached 5.827 dollars. San Francisco recorded the highest city average at 5.930 dollars. Seattle followed with 5.653 dollars. The East Coast averaged 4.191 dollars per gallon. The Midwest averaged 4.091 dollars. The Gulf Coast showed the lowest regional average at 3.852 dollars. Houston recorded the lowest city price at 3.738 dollars. Texas state average was 3.806 dollars.
Midwestern and Eastern states show moderate pricing. New York averaged 4.339 dollars. Massachusetts stood at 4.253 dollars. Colorado reported 4.230 dollars. Minnesota averaged 4.223 dollars. Ohio recorded 4.147 dollars. Florida averaged 4.102 dollars. Boston city prices were 4.266 dollars. Chicago recorded 4.420 dollars. Denver averaged 4.250 dollars. Miami recorded 4.105 dollars. Cleveland showed 4.181 dollars. These figures highlight significant geographic disparities in fuel costs.
Diesel Costs Rise Across All Regions
East Coast diesel prices increased sharply this week. The regional average stood at 6.158 dollars per gallon. The week-ago change for this region was 0.414 dollars. The year-ago change was 2.410 dollars. The two-year change was 2.573 dollars. Diesel remains more expensive than gasoline nationwide. The national diesel average of 6.285 dollars reflects widespread increases. Commercial transport costs are likely rising. Fleet operators face higher operational expenses. The data provides a clear snapshot of current market conditions.
Long Term Price Trends Continue
Current prices are significantly higher than two years ago. Gasoline is up 1.139 dollars compared to the 2024 level. Diesel is up 2.759 dollars compared to the 2024 level. Year-over-year gains are also substantial. Gasoline is up 1.151 dollars from September 2025. Diesel is up 2.546 dollars from September 2025. These trends suggest structural changes in fuel pricing. Inflationary pressures may be contributing to the rise. Consumers should expect elevated costs in the near term. The EIA data provides the baseline for these calculations.
