Why are gasoline prices (rising|falling)?
What We Pay for a Gallon of Regular Gasoline (Aug 2008)
Want to understand why retail gasoline prices are so high? Or, why they’re not? How about what the price per gallon averages regionally and nationaly? Or, maybe you’re interested why gasoline prices are so different from one state to another?
Find answers to these questions plus a wealth of information about factors that affect our “fuel economy” at FuelEconomy.gov. The site, published by the U.S. Department of Energy (DoE), offers resources useful to both researchers and consumers.