Diesel rose 1.2 cents to $3.915 a gallon, its fourth straight increase, while gasoline declined for the first time in three weeks, the Department of Energy reported.
Gasoline fell 3.6 cents to $3.646, following two increases that totaled almost 20 cents, DOE said late Monday following its weekly survey of filling stations.
Diesel has gained almost a dime in the past month, and Monday’s price is 11.9 cents higher than the same week last year. Gas is 13.8 cents over a year ago.
The largest diesel increase was a 4.7-cent upturn in the Rocky Mountain region, to $3.913, which outpaced increases in DOE’s other regions.
California — which is part of the West Coast region, although DOE breaks its price out separately — posted a 0.9-cent increase but had the highest overall price, at $4.122.
Each week, DOE surveys about 400 diesel filling stations and 800 gasoline stations to compile national average prices.