89 STAT. 906
PUBLIC LAW 94-163—DEC. 22, 1975 "DETERMINATION OF AVERAGE FUEL ECONOMY
15 USC 2003.
Definitions.
"SEC. 503. (a)(1) Average fuel economy for purposes of section 502 (a) and (c) shall be calculated by the E P A Administrator by dividing— "(A) the total number of passenger automobiles manufactured in a given model year by a manufacturer, by "(B) a sum of terms, each term of which is a fraction created by dividing— " (i) the number of passenger automobiles of a given model type manufactured by such manufacturer in such model year, by "(ii) the fuel economy measured for such model type. "(2) Average fuel economy for purposes of section 502(b) shall be calculated in accordance with rules of the E P A Administrator. "(b)(1) In calculating average fuel economy under subsection (a)(1), the E P A Administrator shall separate the total number of passenger automobiles manufactured by a manufacturer into the following two categories: "(A) Passenger automobiles which are domestically manufactured by such manufacturer (plus, in the case of model year 1978 and model year 1979, passenger automobiles which are within the includable base import volume of such manufacturer). "(B) Passenger automobiles which are not domestically manufactured by such manufacturer (and which, in the case of model year 1978 and model year 1979, are not within the includable base import volume of such manufacturer). The E P A Administrator shall calculate the average fuel economy of each such separate category, and each such category shall be treated as if manufactured by a separate manufacturer for purposes of this part. " (2) For purposes of this subsection: "(A) The term 'includable base import volume', with respect to any manufacturer in model year 1978 or 1979, as the case may be, is a number of passenger automobiles which is the lesser of— "(i) the manufacturer's base import volume, or "(ii) the number of passenger automobiles calculated by multiplying— " (I) the q^uotient obtained by dividing such manufacturer's base import volume by such manufacturer's base base production volume, times " ( II) the total number of passenger automobiles manufactured by such manufacturer during such model year. "(B) The term 'base import volume' means one-half the sum of— " (i) the total number of passenger automobiles which were not domestically manufactured by such manufacturer during model year 1974 and which were imported by such manufacturer during such model year, plus " (ii) 133 percent of the total number of passenger automobiles which were not domestically manufactured by such manufacturer during the first 9 months of model year 1975 and which were imported by such manufacturer during such 9-month period. "(C) The term 'base production volume' means one-half the sum of—
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