(a) The fleet average fuel economy performance of all passenger automobiles that are manufactured by a manufacturer in a model year shall be determined in accordance with procedures established by the Administrator of the Environmental Protection Agency under 49 U.S.C. 32904 and set forth in 40 CFR part 600. For model years 2017 to 2025, a manufacturer is eligible to increase the fuel economy performance of passenger cars in accordance with procedures established by EPA set forth in 40 CFR part 600, including any adjustments to fuel economy EPA allows, such as for fuel consumption improvements related to air conditioning efficiency and off-cycle technologies.
(b) The eligibility of a manufacturer to increase its fuel economy performance through use of an off-cycle technology requires an application request made to EPA in accordance with 40 CFR Part 86.1869-12 and an approval granted by EPA made in consultation with NHTSA. In order to expedite NHTSA's consultation with EPA, a manufacturer's application as part of the off-cycle credit approval process under 40 CFR 86.1869-12(b) or 40 CFR 86.1869-12(c) shall also be submitted to NHTSA at the same time if the manufacturer is seeking off-cycle fuel economy improvement values under the CAFE program for those technologies. For off-cycle technologies which are covered under 40 CFR 86.1869-12(b) or 40 CFR 86.1869-12(c), NHTSA will consult with EPA regarding NHTSA's evaluation of the specific off-cycle technology to ensure its impact on fuel economy and the suitability of using the off-cycle technology to adjust the fuel economy performance. NHTSA will provide its views on the suitability of the technology for that purpose to EPA. NHTSA's evaluation and review will consider:
(1) Whether the technology has a direct impact upon improving fuel economy performance;
(2) Whether the technology is related to crash-avoidance technologies, safety critical systems or systems affecting safety-critical functions, or technologies designed for the purpose of reducing the frequency of vehicle crashes;
(3) Information from any assessments conducted by EPA related to the application, the technology and/or related technologies; and
(4) Any other relevant factors. [77 FR 63191, Oct. 15, 2012] Sec. Appendix to Part 531--Example of Calculating Compliance Under Sec.
531.5(c)
Assume a hypothetical manufacturer (Manufacturer X) produces a fleet of domestic passenger automobiles in MY 2012 as follows:
Appendix Table I--------------------------------------------------------------------------------------------------------------------------------------------------------
Model type Actual--------------------------------------------------------------------------- measured
Basic Description fuel Volume
Group Carline name engine Transmission economy
(L) class (mpg)---------------------------------------------------------------------------------------------------------------------1.............................. PC A FWD.......... 1.8 A5 2-door sedan...... 34.0 1,5002.............................. PC A FWD.......... 1.8 M6 2-door sedan...... 34.6 2,0003.............................. PC A FWD.......... 2.5 A6 4-door wagon...... 33.8 2,0004.............................. PC A AWD.......... 1.8 A6 4-door wagon...... 34.4 1,0005.............................. PC A AWD.......... 2.5 M6 2-door hatchback.. 32.9 3,0006.............................. PC B RWD.......... 2.5 A6 4-door wagon...... 32.2 8,0007.............................. PC B RWD.......... 2.5 A7 4-door sedan...... 33.1 2,0008.............................. PC C AWD.......... 3.2 A7 4-door sedan...... 30.6 5,0009.............................. PC C FWD.......... 3.2 M6 2-door coupe...... 28.5 3,000
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Total...................... 27,500............--------------------------------------------------------------------------------------------------------------------------------------------------------Note to Appendix Table I: Manufacturer X's required fleet average fuel economy standard level would first be calculated by determining the fuel economy
targets applicable to each unique model type and footprint combination for model type groups 1-9 as illustrated in Appendix Table II:
Manufacturer X calculates a fuel economy target standard for each unique model type and footprint combination.
Appendix Table II------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Model type Fuel------------------------------------------------------------------------------------------------ Track economy
Description Base tire Wheelbase width F&R; Footprint Volume target
Group Carline name Basic Transmission size (inches) average (ft\2\) standard
engine (L) class (inches) (mpg)------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------1....................................... PC A FWD.................. 1.8 A5 2-door sedan.............. 205/75R14 99.8 61.2 42.4 1,500 35.012....................................... PC A FWD.................. 1.8 M6 2-door sedan.............. 215/70R15 99.8 60.9 42.2 2,000 35.143....................................... PC A FWD.................. 2.5 A6 4-door wagon.............. 215/70R15 100.0 60.9 42.3 2,000 35.084....................................... PC A AWD.................. 1.8 A6 4-door wagon.............. 235/60R15 100.0 61.2 42.5 1,000 35.955....................................... PC A AWD.................. 2.5 M6 2-door hatchback.......... 225/65R16 99.6 59.5 41.2 3,000 35.816....................................... PC B RWD.................. 2.5 A6 4-door wagon.............. 265/55R18 109.2 66.8 50.7 8,000 30.337....................................... PC B RWD.................. 2.5 A7 4-door sedan.............. 235/65R17 109.2 67.8 51.4 2,000 29.998....................................... PC C AWD.................. 3.2 A7 4-door sedan.............. 265/55R18 111.3 67.8 52.4 5,000 29.529....................................... PC C FWD.................. 3.2 M6 2-door coupe.............. 225/65R16 111.3 67.2 51.9 3,000 29.76
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Total............................... 27,500....................------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Note to Appendix Table II: With the appropriate fuel economy targets determined for each unique model type and footprint combination, Manufacturer X's required fleet average fuel economy
standard would be calculated as illustrated in Appendix Figure 1:
Appendix Figure 1--Calculation of Manufacturer X's fleet average fuel economy standard using Table II: Fleet average fuel economy standard =[GRAPHIC] [TIFF OMITTED] TR15OC12.074 = 31.6 mpg
Appendix Figure 2--Calculation of Manufacturer X's actual fleet average fuel economy performance level using Table I:Fleet average fuel economy performance =[GRAPHIC] [TIFF OMITTED] TR15OC12.075 = 32.0 mpg
Note to Appendix Figure 2: Since the actual fleet average fuel economy performance of Manufacturer X's fleet is 32.0 mpg, as compared to its required fleet fuel economy standard of 31.6 mpg, Manufacturer X complied with the CAFE standard for MY 2012 as set forth in Sec. 531.5(c). [77 FR 63191, Oct. 15, 2012]