1.1.Current allowance for E15 under the “substantially similar rule”

 

The 1977 amendments to the Clean Air Act (CAA), Section 211(f) on New Fuels and Fuel Additives,  required that new gasoline formulations or additives be “substantially similar” to those already in commerce and used in certifying vehicles and engines to emission standards.  Furthermore, under the substantially similar provision, the new fuel or fuel additive “will not cause or contribute to a failure of any emission control device or system (over the useful life of the motor vehicle, motor vehicle engine, nonroad engine or nonroad vehicle in which such device or system is used) to achieve compliance with the emission standards to which it has been certified…”  EPA may grant a waiver to these restrictions based on data dem