; amendment of 1986 Code (a) Short title This Act may be cited as the Efficient Vehicle Leadership Act of 2019 . (b) Amendment of 1986 Code Except as otherwise expressly provided, whenever in this Act an amendment or repeal is expressed in terms of an amendment to, or repeal of, a section or other provision, the reference shall be considered to be made to a section or other provision of the Internal Revenue Code of 1986. 2. Tax credit for fuel-efficient motor vehicles (a) In general Subpart B of part IV of subchapter A of chapter 1 (relating to other credits) is amended by inserting after section 30D the following new section: 30E. Fuel performance rebate (a) Allowance of credit (1) In general There shall be allowed as a credit against the tax imposed by this chapter for the taxable year an amount equal to the amount determined under paragraph (2) with respect to any new qualified fuel-efficient motor vehicle placed in service by the taxpayer during the taxable year. (2) Credit amount With respect to each new qualified fuel-efficient motor vehicle, the amount determined under this paragraph shall be equal to the product of— (A) the absolute value of the difference between the fuel-economy rating and the reference fuel-economy rating for such motor vehicle for the model year, (B) 100, and (C) the applicable amount. (3) Applicable amount For purposes of paragraph (2)(C), the applicable amount is equal to— (A) in the case of model year 2021— (i) $1,000, or (ii) $2,000, if the fuel-economy rating for such motor vehicle is at least 50 percent more efficient than the reference fuel-economy rating for such motor vehicle as determined under paragraph (2)(A), and (B) in the case of any succeeding model year— (i) $1,500, (ii) $2,500, if the fuel-economy rating for such motor vehicle is at least 50 percent more efficient than the reference fuel-economy rating for such motor vehicle as determined under paragraph (2)(A), or (iii) $3,500, if the fuel-economy rating for such motor vehicle is at least 75 percent more efficient