; (D) for model years 2019 through 2021, 4.0 miles per gallon; and (E) for model year 2022 and subsequent model years, 6.0 miles per gallon. ; and (B) in paragraph (5), by striking 2010 and inserting 2009 . 3. Calculation of average fuel economy Section 32904(a) of title 49, United States Code, is amended by adding at the end the following: (3) For model years 2012 through 2025, if requested by a manufacturer, the average fuel economy calculated by the Administrator for the manufacturer’s passenger and nonpassenger automobiles shall include off-cycle technology fuel economy credits equivalent to the credits calculated by the Administrator for the off-cycle technology under the Administrator’s vehicle emissions standards for the same or closest model year, provided that the technology has a direct impact upon improving fuel economy performance. .