§ 600.207-12 Calculation and use of vehicle-specific 5-cycle-based fuel economy and CO2 emission values for vehicle configurations.

(a) Fuel economy and CO₂ emission values determined for each vehicle under § 600.114 and as approved in § 600.008(c), are used to determine vehicle-specific 5-cycle city and highway fuel economy and CO₂ emission values for each vehicle configuration for which data are available.

(1) If only one set of 5-cycle city and highway fuel economy and CO₂ emission values is accepted for a vehicle configuration, these values, where fuel economy is rounded to the nearest 0.0001 of a mile per gallon and the CO₂ emission value in grams per mile is rounded to the nearest tenth of a gram per mile, comprise the city and highway fuel economy and CO₂ emission values for that configuration. 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.

(2) If more than one set of 5-cycle city and highway fuel economy and CO₂ emission values are accepted for a vehicle configuration: