625 ILCS 5/5-104

On and after January 1, 1976, each manufacturer of a 1976 or later model year vehicle of the first division manufactured for sale in this State, other than a motorcycle, shall clearly and conspicuously indicate, on the price listing affixed to the vehicle pursuant to the Automobile Information Disclosure Act, (15 United States Code 1231 through 1233), the following, with the appropriate gasoline mileage figure:

"In tests for fuel economy in city and highway driving conducted by the United States Environmental Protection Agency, this passenger vehicle obtained ....... miles per gallon of gasoline.".