StacksVerified U.S. regulatory reference

49 CFR Part 533, Appendix A

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov

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

Model typeDescriptionActual measured fuel economy (mpg)Volume
GroupCarline nameBasic engine(L)Transmission class
1Pickup A 2WD4A5 | Reg cab, MB | 27.1 | 800
2Pickup B 2WD4M5 | Reg cab, MB | 27.6 | 200
3Pickup C 2WD4.5A5 | Reg cab, LB | 23.9 | 300
4Pickup C 2WD4M5 | Ext cab, MB | 23.7 | 400
5Pickup C 4WD4.5A5 | Crew cab, SB | 23.5 | 400
6Pickup D 2WD4.5A6 | Crew cab, SB | 23.6 | 400
7Pickup E 2WD5A6 | Ext cab, LB | 22.7 | 500
8Pickup E 2WD5A6 | Crew cab, MB | 22.5 | 500
9Pickup F 2WD4.5A5 | Reg cab, LB | 22.5 | 1,600
10Pickup F 4WD4.5A5 | Ext cab, MB | 22.3 | 800
11Pickup F 4WD4.5A5 | Crew cab, SB | 22.2 | 800
Total||| 6,700

Note to Table I to this appendix: 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 Table II to this appendix.

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

Model typeDescriptionBase tiresizeWheelbase (inches)Trackwidth F&Raverage(inches)Footprint (ft2)VolumeFuel economy target standard (mpg)
GroupCarline nameBasicengine (L)Transmission class
1Pickup A 2WD4A5Reg cab, MB235/75R1510068.8 | 47.8 | 800 | 27.3
2Pickup B 2WD4M5Reg cab, MB235/75R1510068.2 | 47.4 | 200 | 27.44
3Pickup C 2WD4.5A5Reg cab, LB255/70R1712568.8 | 59.7 | 300 | 23.79
4Pickup C 2WD4M5Ext cab, MB255/70R1712568.8 | 59.7 | 400 | 23.79
5Pickup C 4WD4.5A5Crew cab, SB275/70R1715069 | 71.9 | 400 | 22.27
6Pickup D 2WD4.5A6Crew cab, SB255/70R1712568.8 | 59.7 | 400 | 23.79
7Pickup E 2WD5A6Ext cab, LB255/70R1712568.8 | 59.7 | 500 | 23.79
8Pickup E 2WD5A6Crew cab, MB285/70R1712569.2 | 60.1 | 500 | 23.68
9Pickup F 2WD4.5A5Reg cab, LB255/70R1712568.9 | 59.8 | 1,600 | 23.76
10Pickup F 4WD4.5A5Ext cab, MB275/70R1715069 | 71.9 | 800 | 22.27
11Pickup F 4WD4.5A5Crew cab, SB285/70R1715069.2 | 72.1 | 800 | 22.27
Total||||6,700

Note to Table II to this appendix: 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 Figure 1 to this appendix:

Note to Figure 2 to this appendix: 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).