The U.S. average retail price of diesel climbed 0.2 cent to $3.171 a gallon, as crude oil prices settled below $63 amid international tensions, the Department of Energy reported May 6.
Diesel now costs exactly the same as it did a year ago, DOE said.
Regional diesel prices were mixed, lower in five regions and higher in five.
With only two exceptions, the U.S. average retail diesel price has climbed each week since Feb. 11.
Also last week, the national average price for regular gasoline climbed 1 cent to $2.897 a gallon, DOE’s Energy Information Administration said.