42 U.S.C. § 7553 : The Public Health And Welfare — Air Pollution Prevention And Control — Emission Standards For Moving Sources — Motor Vehicle Emission And Fuel Standards — Prohibition On Production Of Engines Requiring Leaded Gasoline Date: 10 Mar 2017 TEXT PDF The Administrator shall promulgate regulations applicable to motor vehicle engines and nonroad engines manufactured after model year 1992 that prohibit the manufacture, sale, or introduction into commerce of any engine that requires leaded gasoline. (July 14, 1955, ch. 360, title II, § 218, as added Pub. L. 101–549, title II, § 226, Nov. 15, 1990, 104 Stat. 2505.)