This report summarizes key trends in carbon dioxide (CO2) emissions, fuel economy, and CO2- and fuel economy-related technology for gasoline- and diesel-fueled personal vehicles sold in the United States, from model years (MY) 1975 through 2011. The data in this report cover the MY 1975-2011 timeframe, supersede the data in previous reports in this series, and should not be compared with data from previous years’ editions of this report due to changes discussed below.
U.S. Environmental Protection Agency. 2012d. Light-Duty Automotive Technology, Carbon Dioxide Emissions, and Fuel Economy Trends: 1975 Through 2011. EPA-420-R-12-001. Transportation and Climate Division, Office of Transportation and Air Quality, U.S. Environmental Protection Agency. March.