49 CFR 531.5 - Fuel economy standards.
(a)
Except as provided in paragraph (e) of this section, each manufacturer of passenger automobiles shall comply with the average fuel economy standards in Table I, expressed in miles per gallon, in the model year specified as applicable:
(b)
For model year 2011, a manufacturer's passenger automobile fleet shall comply with the fuel economy level calculated for that model year according to Figure 1 and the appropriate values in Table II.
Figure 1:
Where:
N is the total number (sum) of passenger automobiles produced by a manufacturer,
N
i is the number (sum) of the ith model passenger automobile produced by the manufacturer, and
T
i is fuel economy target of the ith model passenger automobile, which is determined according to the following formula, rounded to the nearest hundredth:
Where:
Parameters a, b, c, and d are defined in Table II;
e = 2.718; and
x = footprint (in square feet, rounded to the nearest tenth) of the vehicle model
(c)
For model years 2012-2016, a manufacturer's passenger automobile fleet shall comply with the fuel economy level calculated for that model year according to Figure 2 and the appropriate values in Table III.
Where:
CAFE
required is the required level for a given fleet (domestic passenger automobiles or import passenger automobiles),
Subscript i is a designation of multiple groups of automobiles, where each group's designation, i.e., i = 1, 2, 3, etc., represents automobiles that share a unique model type and footprint within the applicable fleet, either domestic passenger automobiles or import passenger automobiles.
Production
i is the number of passenger automobiles produced for sale in the United States within each ith designation, i.e., which shares the same model type and footprint.
TARGET
i is the fuel economy target in miles per gallon (mpg) applicable to the footprint of passenger automobiles within each ith designation, i.e., which shares the same model type and footprint, calculated according to Figure 3 and rounded to the nearest hundredth of a mpg, i.e., 35.455 = 35.46 mpg, and the summations in the numerator and denominator are both performed over all models in the fleet in question.
Where:
TARGET is the fuel economy target (in mpg) applicable to vehicles of a given footprint (FOOTPRINT, in square feet),
Parameters a, b, c, and d are defined in Table III, and
The MIN and MAX functions take the minimum and maximum, respectively, of the included values.
Model year | Parameters | |||
---|---|---|---|---|
a | b | c | d | |
2012 | 35.95 | 27.95 | 0.0005308 | 0.006057 |
2013 | 36.80 | 28.46 | 0.0005308 | 0.005410 |
2014 | 37.75 | 29.03 | 0.0005308 | 0.004725 |
2015 | 39.24 | 29.90 | 0.0005308 | 0.003719 |
2016 | 41.09 | 30.96 | 0.0005308 | 0.002573 |
(d)
In addition to the requirement of paragraphs (b) and (c) of this section, each manufacturer shall also meet the minimum standard for domestically manufactured passenger automobiles expressed in Table IV:
Model year | Minimum standard |
---|---|
2011 | 27.8 |
2012 | 30.7 |
2013 | 31.4 |
2014 | 32.1 |
2015 | 33.3 |
2016 | 34.7 |
(e)
The following manufacturers shall comply with the standards indicated below for the specified model years:
Model year | Miles per gallon |
---|---|
1978 | 16.1 |
1979 | 14.5 |
1980 | 15.8 |
1981 | 18.2 |
1982 | 18.2 |
1983 | 16.9 |
1984 | 16.9 |
1985 | 16.9 |
Model year | Average fuel economy standard (miles per gallon) |
---|---|
1978 | 10.7 |
1979 | 10.8 |
1980 | 11.1 |
1981 | 10.7 |
1982 | 10.6 |
1983 | 9.9 |
1984 | 10.0 |
1985 | 10.0 |
1986 | 11.0 |
1987 | 11.2 |
1988 | 11.2 |
1989 | 11.2 |
1990 | 12.7 |
1991 | 12.7 |
1992 | 13.8 |
1993 | 13.8 |
1994 | 13.8 |
1995 | 14.6 |
1996 | 14.6 |
1997 | 15.1 |
1998 | 16.3 |
1999 | 16.3 |
Model year | Miles per gallon |
---|---|
1978 | 17.6 |
1979 | 16.5 |
1980 | 18.5 |
1981 | 18.3 |
1982 | 18.4 |
Model year | Miles per gallon |
---|---|
1979 | 11.5 |
1980 | 12.1 |
1981 | 12.2 |
1982 | 12.2 |
1983 | 11.3 |
1984 | 11.3 |
1985 | 11.4 |
Model year | Miles per gallon |
---|---|
1978 | 11.5 |
1979 | 11.5 |
1980 | 16.2 |
1981 | 17.9 |
1982 | 17.9 |
1983 | 16.6 |
1984 | 16.6 |
1985 | 16.6 |
Model year | Average fuel economy standard (miles per gallon) |
---|---|
1994 | 24.2 |
1995 | 23.3 |
Model year | Miles per gallon |
---|---|
1978 | 12.5 |
1979 | 12.5 |
1980 | 9.5 |
1984 | 17.9 |
1985 | 16.8 |
Model year | Miles per gallon |
---|---|
1983 | 13.7 |
1984 | 13.7 |
Model year | Miles per gallon |
---|---|
1985 | 21.0 |
1986 | 21.0 |
1987 | 21.0 |
Model year | Average fuel economy standard (miles per gallon) |
---|---|
1995 | 12.8 |
1996 | 12.6 |
1997 | 12.5 |
Model year | Average fuel economy standard (miles per gallon) |
---|---|
1986 | 16.0 |
1987 | 16.0 |
1988 | 16.0 |
1992 | 17.0 |
1993 | 17.0 |
1994 | 17.0 |
1995 | 17.0 |
Model year | Average fuel economy standard (miles per gallon) |
---|---|
1996 | 17.0 |
1997 | 17.0 |
1998 | 17.0 |
Model year | Average fuel economy standard (miles per gallon) |
---|---|
1998 | 12.1 |
Model year | Average fuel economy standard (miles per gallon) |
---|---|
2000 | 22.0 |
2001 | 22.0 |
Model year | Miles per gallon |
---|---|
2006 | 18.9 |
2007 | 18.9 |
[43 FR 28204, June 29, 1978]
Editorial Note:
For Federal Register citations affecting § 531.5 see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.fdsys.gov.
Title 49 published on 2014-10-01.
No entries appear in the Federal Register after this date, for 49 CFR Part 531.