AAA
AAA daily gas price averages for the United States, states and metro areas.
Alternative Fuels Data Center
U.S. Department of Energy data on alternative fuel stations and vehicles.
FuelEconomy.gov
FuelEconomy.gov provides official vehicle fuel economy ratings, driving range, emissions, five-year savings, and annual fuel costs based on current fuel prices and EPA’s 15,000-mile annual driving assumption.
GasBuddy
GasBuddy finds stations and community-reported fuel prices in the US and Canada, with nearby prices that may be missing or out of date and regional averages that may lag the day.
US Energy Information Administration
US Energy Information Administration provides official energy statistics and analysis, including latest weekly fuel prices and preliminary monthly state electricity prices with historical comparisons.