Energy Information Administration (EIA)
The Energy Information Administration, created by Congress in 1977, is a statistical agency of the U.S. Department of Energy. This site allows users to retrieve information on energy sources such as petroleum, natural gas, electricity, coal, nuclear, and renewable and alternative fuels. The site also provides access to reports and other information related to the energy consumption, energy production, and CO2 emissions for the United States and other countries across the globe.
A joint effort of the United States Department of Energy and the Environmental Protection Agency, this site provides a wealth of information on automobile fuel efficiency. It includes emission and mileage information on models dating back to 1985, gas saving tips, information on tax incentives, gas price information, a handy fuel economy guide, and more.