40 CFR § 610.12
Program initiative
June 9, 2020
A retrofit device evaluation program will be initiated as follows:
(a) At the request of the Federal Trade Commission (FTC) when it has reason to believe that fuel economy representation made for a retrofit device being marketed may be inadequate,
(b) At the EPA Administrator's initiative, or
(c) Upon the application of any manufacturer of a retrofit device (or prototype thereof) for which a fuel economy improvement claim is made.