Diesel prices set a new record high last week for the third week in a row, after prices climbed 1.1 cents to $1.825 per gallon, the Energy Information Administration said.
National price trends kept in step with recent record-high trading prices for barrels of crude.
The New England region posted the largest increase, up 2.1 cents to $1.91 per gallon. The West Coast was the only region that reported a decrease, down 0.1 cent to $2.029.
The relative price stability of the previously volatile West Coast region compared with the rest of country indicates that crude prices, not refining capacity, are driving the recent increases.
California remains the most expensive region to fill up, as prices held at $2.113. The Lower Atlantic recorded the lowest prices at $1.763.