be increased by an amount equal to— (A) such dollar amount, multiplied by (B) the cost-of-living adjustment determined under section 1(f)(3) for the calendar year in which the model year begins, determined by substituting 2020 for 2016 in subparagraph (A)(ii) thereof. Any increase determined under the preceding sentence shall be rounded to the nearest multiple of $100. (f) Regulations (1) In general Except as provided in paragraph (2), the Secretary shall promulgate such regulations as necessary to carry out the provisions of this section. (2) Coordination in prescription of certain regulations The Secretary of the Treasury, in coordination with the Secretary of Transportation and the Administrator of the Environmental Protection Agency, shall prescribe such regulations as necessary to determine whether a motor vehicle meets the requirements to be eligible for a credit under this section. . (b) Credit allowed against alternative minimum tax Section 38(c)(4)(B) is amended by redesignating clauses (i) through (xii) as clauses (ii) through (xiii), respectively, and by inserting before clause (ii) (as so redesignated) the following new clause: (i) the credit determined under section 30E, . (c) Display of credit Section 32908(b)(1) of title 49, United States Code, is amended— (1) by redesignating subparagraphs (E) and (F) as subparagraphs (F) and (G), and (2) by inserting after subparagraph (D) the following new subparagraph: (E) the amount of the fuel-efficient motor vehicle credit allowable with respect to the sale of the automobile under section 30E of the Internal Revenue Code of 1986 ( 26 U.S.C. 30E ). . (d) Conforming amendments (1) Section 38(b) is amended by striking plus at the end of paragraph (34), by striking the period at the end of paragraph (35) and inserting , plus , and by adding at the end the following new paragraph: (36) the portion of the fuel performance rebate to which section 30E(c)(1) applies. . (2) Section 1016(a) is amended by striking and at the end of paragraph (37), by striking the