Diesel-powered cars generally have a better fuel economy than equivalent gasoline engines and produce less greenhouse gas emission. Their greater economy is due to the higher energy per-liter content of diesel fuel and the intrinsic efficiency of the diesel engine.
The national average retail price of diesel fell 2 cents during the week ended May 9, according to the U.S. Department of Energy’s Energy Information Administration. The national average price declined to $4.104 but is still 97.7 cents higher than a year earlier.
All regions dipped in price, except for the Rocky Mountain area that reported the same average price as the previous week. The Gulf Coast, after jumping in price the previous week, fell 3.8 cents to $4.022 to remain the cheapest region. The Central Atlantic slid 2.1 cents to $4.248 as did the West Coast to $4.307. California dipped 0.6-cent to $4.459, the nation’s highest.
The record diesel price was $4.764 in July 2008.
For diesel price information, click here.