The national average price is at its highest level since Sept. 29, 2008, when it was $3.959 and almost $1 a gallon higher than the same week last year.
The West Coast and California led the higher prices. California jumped 5.7 cents to $4.256, the most expensive in the nation. Average West Coast fuel surged 5.1 cents to $4.155. The Rocky Mountain area gained 3.4 cents to $3.959.
For state-by-state diesel prices, updated daily, click here.