49 CFR Appendix A to Part 533 - Example of Calculating Compliance Under § 533.5(i)

Appendix A to Part 533 - Example of Calculating Compliance Under § 533.5(i)

Assume a hypothetical manufacturer (Manufacturer X) produces a fleet of light trucks in MY 2012 as follows:

Appendix A Table I

Model type Description Actual measured fuel economy
(mpg)
Volume
Group Carline name Basic engine
(L)
Transmission class
1 Pickup A 2WD 4 A5 Reg cab, MB 27.1 800
2 Pickup B 2WD 4 M5 Reg cab, MB 27.6 200
3 Pickup C 2WD 4.5 A5 Reg cab, LB 23.9 300
4 Pickup C 2WD 4 M5 Ext cab, MB 23.7 400
5 Pickup C 4WD 4.5 A5 Crew cab, SB 23.5 400
6 Pickup D 2WD 4.5 A6 Crew cab, SB 23.6 400
7 Pickup E 2WD 5 A6 Ext cab, LB 22.7 500
8 Pickup E 2WD 5 A6 Crew cab, MB 22.5 500
9 Pickup F 2WD 4.5 A5 Reg cab, LB 22.5 1,600
10 Pickup F 4WD 4.5 A5 Ext cab, MB 22.3 800
11 Pickup F 4WD 4.5 A5 Crew cab, SB 22.2 800
Total 6,700

Note to Appendix A 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 1-11 as illustrated in Appendix A Table II.

Manufacturer X calculates a fuel economy target standard for each unique model type and footprint combination.

Appendix A Table II

Model type Description Base tire size Wheelbase
(inches)
Track width F&R average
(inches)
Footprint
(ft 2)
Volume Fuel economy target standard
(mpg)
Group Carline name Basic engine
(L)
Transmission class
1 Pickup A 2WD 4 A5 Reg cab, MB 235/75R15 100.0 68.8 47.8 800 27.30
2 Pickup B 2WD 4 M5 Reg cab, MB 235/75R15 100.0 68.2 47.4 200 27.44
3 Pickup C 2WD 4.5 A5 Reg cab, LB 255/70R17 125.0 68.8 59.7 300 23.79
4 Pickup C 2WD 4 M5 Ext cab, MB 255/70R17 125.0 68.8 59.7 400 23.79
5 Pickup C 4WD 4.5 A5 Crew cab, SB 275/70R17 150.0 69.0 71.9 400 22.27
6 Pickup D 2WD 4.5 A6 Crew cab, SB 255/70R17 125.0 68.8 59.7 400 23.79
7 Pickup E 2WD 5 A6 Ext cab, LB 255/70R17 125.0 68.8 59.7 500 23.79
8 Pickup E 2WD 5 A6 Crew cab, MB 285/70R17 125.0 69.2 60.1 500 23.68
9 Pickup F 2WD 4.5 A5 Reg cab, LB 255/70R17 125.0 68.9 59.8 1,600 23.76
10 Pickup F 4WD 4.5 A5 Ext cab, MB 275/70R17 150.0 69.0 71.9 800 22.27
11 Pickup F 4WD 4.5 A5 Crew cab, SB 285/70R17 150.0 69.2 72.1 800 22.27
Total 6,700

Note to Appendix A 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 A Figure 1:

Appendix A Figure 1 - Calculation of Manufacturer X's Fleet Average Fuel Economy Standard Using Table II
Fleet average fuel economy standard=

= ( Manufacturer's Light Truck Production for Applicable Model Year ) i ( Group 1 Production Group 1 Target Standard + Group 2 a Production Group 2 Target Standard + Group 11 Production Group 11 Target Standard ) = ( 6,700 ) ( 800 27.80 + 200 27.44 + 300 28.79 + 400 28.79 + 400 22.27 + 400 28.79 + 500 28.79 + 500 28.68 + 1600 28.76 + 800 22.27 + 800 22.27 )

= 23.7 mpg
Appendix A Figure 2 - Calculation of Manufacturer X's Actual Fleet Average Fuel Economy Performance Level Using Table I
Fleet average fuel economy performance =

= ( Manufacturer's Light Truck Production for Applicable Model Year ) i ( Group 1 Production Group 1 Performance + Group 2 Production Group 2 Performance + Group 11 Production Group 11 Performance ) = ( 27,500 ) ( 1500 14.0 + 2000 84.6 + 2000 33.8 + 1000 34.4 + 3000 32.9 + 8000 32.2 + 2000 33.1 + 5000 30.6 + 3000 28.5 )

= 23.3 mpg
Note to Appendix A Figure 2:

Since the actual fleet average fuel economy performance of Manufacturer X's fleet is 23.3 mpg, as compared to its required fleet fuel economy standard of 23.7 mpg, Manufacturer X did not comply with the CAFE standard for MY 2012 as set forth in § 533.5(i).

[77 FR 63196, Oct. 15, 2012, as amended at 84 FR 51362, Sept. 27, 2019]

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