Federal Register - September 3, 2021
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Source: Federal Register
Federal Register / Vol. 86, No. 169 / Friday, September 3, 2021 / Proposed Rules Appendix A to Part 531Example of Calculating Compliance Under 531.5c
levels of average fuel economy for those vehicles.
Authority: 49 U.S.C. 32902; delegation of authority at 49 CFR 1.95.
531.3
531.1
Scope.
This part establishes average fuel economy standards pursuant to section 502 a and c of the Motor Vehicle Information and Cost Savings Act, as amended, for passenger automobiles.
531.2
Purpose.
The purpose of this part is to increase the fuel economy of passenger automobiles by establishing minimum
Applicability.
This part applies to manufacturers of passenger automobiles.
531.4
Definitions.
a Statutory terms. 1 The terms average fuel economy, manufacture, manufacturer, and model year are used as defined in section 501 of the Act.
2 The terms automobile and passenger automobile are used as defined in section 501 of the Act and in accordance with the determination in part 523 of this chapter.
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b Other terms. As used in this part, unless otherwise required by the context 1 Act means the Motor Vehicle Information and Cost Savings Act, as amended by Pub. L. 94163.
2 Reserved 531.5
Fuel economy standards.
a Except as provided in paragraph f of this section, each manufacturer of passenger automobiles shall comply with the fleet average fuel economy standards in Table 1 to this paragraph a, expressed in miles per gallon, in the model year specified as applicable:
Table 1 to Paragraph a
1978
18.0
1979
19.0
1980
20.0
1981
22.0
1982
24.0
1983
26.0
1984
27.0
1985
27.5
1986
26.0
1987
26.0
1988
26.0
1989
26.5
1990 - 2010
27.5
b For model year 2011, a manufacturers passenger automobile
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fleet shall comply with the fleet average fuel economy level calculated for that
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Model year Average fuel economy standard miles per gallon
