Monroney sticker

The Monroney sticker or window sticker is a label required in the United States to be displayed in all new automobiles and includes the listing of certain official information about the car. Since the mid-1970s the United States Environmental Protection Agency provides fuel economy metrics in the label to help consumers choose more fuel efficient vehicles. The window sticker was named after Almer Stillwell "Mike" Monroney, United States Senator from Oklahoma. Monroney sponsored the Automobile Information Disclosure Act of 1958, which mandated disclosure of information on new automobiles.

A more comprehensive fuel economy and environment label was mandatory beginning in model year 2013, though some carmakers adopted it voluntarily for model year 2012. The new window sticker includes specific labels for alternative fuel and alternative propulsion vehicles available in the US market, such as plug-in hybrids, electric vehicles, flexible-fuel vehicles, hydrogen fuel cell vehicle, and natural gas vehicles. The new label introduces the comparison of alternative fuel and advanced technology vehicles with conventional internal combustion engine vehicles using miles per gallon of gasoline equivalent (MPGe) as a metric. Other information provided for the first time includes greenhouse gas and smog emissions ratings, estimates of fuel cost over the next five years, and a QR Code that can be scanned by a smartphone to allow users access to additional online information. The previous label was issued in 2008.