§ 600.209-12 Calculation of vehicle-specific 5-cycle fuel economy and CO2 emission values for a model type.

(a) Base level. 5-cycle fuel economy and CO₂ emission values for a base level are calculated from vehicle configuration 5-cycle fuel economy and CO₂ emission values as determined in § 600.207 for low-altitude tests. Note that the appropriate vehicle-specific CO₂ values for fuel economy labels based on 5-cycle testing with E10 test fuel are adjusted as described in § 600.114-12.

(1) If the Administrator determines that automobiles intended for sale in the State of California are likely to exhibit significant differences in fuel economy and CO₂ emissions from those intended for sale in other states, he will calculate fuel economy and CO₂ emission values for each base level for vehicles intended for sale in California and for each base level for vehicles intended for sale in the rest of the states.

(2) In order to highlight the fuel efficiency and CO₂ emissions of certain designs otherwise included within a model type, a manufacturer may wish to subdivide a model type into one or more additional model types. This is accomplished by separating subconfigurations from an existing base level and placing them into a new base level. The new base level is identical to the existing base level except that it shall be considered, for the purposes of this paragraph, as containing a new basic engine. The manufacturer will be permitted to designate such new basic engines and base level(s) if:

(i) Each additional model type resulting from division of another model type has a unique car line name and that name appears on the label and on the vehicle bearing that label;