Following a recent increase, diesel prices in the United States have once again dipped, maintaining a relatively stable plateau since mid-February. The average on-highway diesel fuel price is $4.015 per gallon, which is 4 cents cheaper than last week and 10 cents less than the previous year. Only the New England sub-region saw a slight increase in diesel prices, while prices dropped in all other regions, ranging from less than 1 cent to 6 cents.

Meanwhile, gas prices varied across regions, with the Midwest experiencing the smallest increase and the West Coast seeing the largest. California witnessed a significant 12-cent increase in gas costs to $5.271 per gallon. The Gulf Coast remains the cheapest place to buy gas at $3.177 per gallon, while California remains the most expensive.

According to both the U.S. Energy Information Administration (EIA) and the AAA motor club, gas prices have risen due to geopolitical events abroad, with tensions in Ukraine and the Middle East contributing to oil price spikes. The EIA’s Short-Term Energy Outlook predicts a slight increase in the Brent crude oil spot price average in the coming months, potentially impacting gas prices further.