; and (iii) any other information determined to be appropriate by the Administrator. (D) Aggregation An application for a zero-emission vehicle credit under subparagraph (A) may aggregate information on all zero-emission vehicles and hybrid electric vehicles sold by the vehicle manufacturer in the applicable calendar year. (3) Quantity of zero-emission vehicle credits (A) Zero-emission vehicles The Administrator shall issue to a vehicle manufacturer the application under paragraph (2) of which is approved 1 zero-emission vehicle credit for each zero-emission vehicle sold in the United States. (B) Hybrid electric vehicles For a hybrid electric vehicle sold by a vehicle manufacturer the application under paragraph (2) of which is approved, the Administrator shall issue a partial zero-emission vehicle credit based on the estimated proportion of the mileage driven on the battery of the hybrid electric vehicle, as determined by the Administrator. (C) Fuel-efficient vehicles The Administrator may issue a partial zero-emission vehicle credit for a motor vehicle that consumes less gasoline, as compared to comparable motor vehicles (as identified by the Administrator), based on the estimated proportion of fuel savings, determined by the Administrator. (D) Credit banking A zero-emission vehicle credit issued for any calendar year that is not submitted to comply with the minimum annual percentage of new zero-emission vehicles requirement of subsection (c) during that calendar year may be carried forward for use pursuant to subsection (b)(1) within the next 5 years, but not later than 2040. (g) Zero-Emission vehicle credit trading (1) In general A zero-emission vehicle credit for any calendar year before 2040 that is not submitted to the Administrator to comply with the minimum annual percentage of new zero-emission vehicles requirement of subsection (c) for that calendar year may be sold, transferred, or exchanged by the vehicle manufacturer to which the credit is issued or by any other entity that acquires the