Code of Federal Regulations Title 49. Transportation § 49.533.5 Requirements

(a) Each manufacturer of light trucks shall comply with the following fleet average fuel economy standards, expressed in miles per gallon, in the model year specified as applicable:

Table I
Model year	2-wheel drive light trucks		4-wheel drive light trucks		Limited product line
	Captive	Other	Captive	Other	light
	imports		imports		trucks
1979		17.2		15.8
1980	16.0	16.0	14.0	14.0	14.0
1981	16.7	16.7	15.0	15.0	14.5

Table II
Model year	Combined standard		2-wheel drive light trucks		4-wheel drive light trucks
	Captive	Others	Captive	Others	Captive	Others
	imports		imports		imports
1982	17.5	17.5	18.0	18.0	16.0	16.0
1983	19.0	19.0	19.5	19.5	17.5	17.5
1984	20.0	20.0	20.3	20.3	18.5	18.5
1985	19.5	19.5	19.7	19.7	18.9	18.9
1986	20.0	20.0	20.5	20.5	19.5	19.5
1987	20.5	20.5	21.0	21.0	19.5	19.5
1988	20.5	20.5	21.0	21.0	19.5	19.5
1989	20.5	20.5	21.5	21.5	19.0	19.0
1990	20.0	20.0	20.5	20.5	19.0	19.0
1991	20.2	20.2	20.7	20.7	19.1	19.1

Table III
Model year	Combined standard
	Captive	Other
	imports
1992	20.2	20.2
1993	20.4	20.4
1994	20.5	20.5
1995	20.6	20.6

Table IV
Model year	Standard
2001	20.7
2002	20.7
2003	20.7
2004	20.7
2005	21.0
2006	21.6
2007	22.2
2008	22.5
2009	23.1
2010	23.5

Figure 1:

Where:

N is the total number (sum) of light trucks produced by a manufacturer;

N_i is the number (sum) of the ith light truck model type produced by a manufacturer;  and

T_i is the fuel economy target of the ith light truck model type, which is determined according to the following formula, rounded to the nearest hundredth:

Where:

Parameters a, b, c, and d are defined in Table V;

e = 2.718;  and

x = footprint (in square feet, rounded to the nearest tenth) of the model type.

Table V—Parameters for the Light Truck Fuel Economy Targets for MYs 2008-2011
Model year	Parameters
	a (mpg)	b (mpg)	c (gal/mi/ft2)	d (gal/mi)
2008	28.56	19.99	49.30	5.58
2009	30.07	20.87	48.00	5.81
2010	29.96	21.20	48.49	5.50
2011	27.10	21.10	56.41	4.28

Figure 2:

Where:

CAFE_required is the fleet average fuel economy standard for a given light truck fleet;

Subscript i is a designation of multiple groups of light trucks, where each group's designation, i.e., i = 1, 2, 3, etc., represents light trucks that share a unique model type and footprint within the applicable fleet.

Production_i is the number of light trucks produced for sale in the United States within each _ith designation, i.e., which share the same model type and footprint;

TARGET_i is the fuel economy target in miles per gallon (mpg) applicable to the footprint of light trucks within each ith designation, i.e., which share the same model type and footprint, calculated according to either Figure 3 or Figure 4, as appropriate, 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.

Figure 3:

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 VI;  and

The MIN and MAX functions take the minimum and maximum, respectively, of the included values.

Table VI—Parameters for the Light Truck Fuel Economy Targets for MYs 2012-2016
Model year	Parameters
	a (mpg)	b (mpg)	c (gal/mi/ft2)	d (gal/mi)
2012	29.82	22.27	0.0004546	0.014900
2013	30.67	22.74	0.0004546	0.013968
2014	31.38	23.13	0.0004546	0.013225
2015	32.72	23.85	0.0004546	0.011920
2016	34.42	24.74	0.0004546	0.010413

Where:

TARGET is the fuel economy target (in mpg) applicable to vehicles of a given footprint (FOOTPRINT, in square feet);

Parameters a, b, c, d, e, f, g, and h are defined in Table VII;  and

The MIN and MAX functions take the minimum and maximum, respectively, of the included values.

Table VII—Parameters for the Light Truck Fuel Economy Targets for MYs 2017-2026
Model year	Parameters
	a	b	c	d	e	f	g	h
	(mpg)	(mpg)	(gal/mi/ft$2)	(gal/mi)	(mpg)	(mpg)	(gal/mi/ft$2)	(gal/mi)
2017․․․․․․․․	36.26	25.09	0.0005484	0.005097	35.10	25.09	0.0004546	0.009851
2018․․․․․․․․	37.36	25.20	0.0005358	0.004797	35.31	25.20	0.0004546	0.009682
2019․․․․․․․․	38.16	25.25	0.0005265	0.004623	35.41	25.25	0.0004546	0.009603
2020․․․․․․․․	39.11	25.25	0.0005140	0.004494	35.41	25.25	0.0004546	0.009603
2021․․․․․․․․	39.71	25.63	0.000506	0.00443	NA	NA	NA	NA
2022․․․․․․․․	40.31	26.02	0.000499	0.00436	NA	NA	NA	NA
2023․․․․․․․․	40.93	26.42	0.000491	0.00429	NA	NA	NA	NA
2024․․․․․․․․	41.55	26.82	0.000484	0.00423	NA	NA	NA	NA
2025․․․․․․․․	42.18	27.23	0.000477	0.00417	NA	NA	NA	NA
2026․․․․․․․․	42.82	27.64	0.000469	0.00410	NA	NA	NA	NA

(c) For model years 1980 and 1981, manufacturers of limited product line light trucks may:

(d) For model years 1982–91, each manufacture may:

(e) For model year 1992, each manufacturer shall comply with the average fuel economy standard specified in paragraph (a) of this section (segregating captive import and other light trucks).

(f) For each model year 1996 and thereafter, each manufacturer shall combine its captive imports with its other light trucks and comply with the fleet average fuel economy standard in paragraph (a) of this section.

(g) For model years 2008–2010, at a manufacturer's option, a manufacturer's light truck fleet may comply with the fuel economy standard calculated for each model year according to Figure 1 and the appropriate values in Table V, with said option being irrevocably chosen for that model year and reported as specified in § 537.8.

(h) For model year 2011, a manufacturer's light truck fleet shall comply with the fleet average fuel economy standard calculated for that model year according to Figure 1 and the appropriate values in Table V.

(i) For model years 2012–2016, a manufacturer's light truck fleet shall comply with the fleet average fuel economy standard calculated for that model year according to Figures 2 and 3 and the appropriate values in Table VI.

(j) For model years 2017–2025, a manufacturer's light truck fleet shall comply with the fleet average fuel economy standard calculated for that model year according to Figures 2 and 4 and the appropriate values in Table VII.

(k) [Reserved by 85 FR 25273]