{"data":{"id":"us/49-cfr-appendix-a-to-part-533","jurisdiction":"us","citation":"49 CFR Appendix A to Part 533","heading":"Appendix A to Part 533—Example of Calculating Compliance Under § 533.5(i)","body":"Assume a hypothetical manufacturer (Manufacturer X) produces a fleet of light trucks in MY 2012 as follows:\nAppendix A—Table I\nModel type Description Actual measured fuel economy (mpg) Volume\nGroup Carline name Basic engine (L) Transmission class\n1 Pickup A 2WD 4 A5 Reg cab, MB 27.1 800\n2 Pickup B 2WD 4 M5 Reg cab, MB 27.6 200\n3 Pickup C 2WD 4.5 A5 Reg cab, LB 23.9 300\n4 Pickup C 2WD 4 M5 Ext cab, MB 23.7 400\n5 Pickup C 4WD 4.5 A5 Crew cab, SB 23.5 400\n6 Pickup D 2WD 4.5 A6 Crew cab, SB 23.6 400\n7 Pickup E 2WD 5 A6 Ext cab, LB 22.7 500\n8 Pickup E 2WD 5 A6 Crew cab, MB 22.5 500\n9 Pickup F 2WD 4.5 A5 Reg cab, LB 22.5 1,600\n10 Pickup F 4WD 4.5 A5 Ext cab, MB 22.3 800\n11 Pickup F 4WD 4.5 A5 Crew cab, SB 22.2 800\nTotal 6,700\nNote 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.\nManufacturer X calculates a fuel economy target standard for each unique model type and footprint combination.\nAppendix A—Table II\nModel type Description Base tire size Wheelbase (inches) Track width F\u0026R average (inches) Footprint (ft2) Volume Fuel economy target standard (mpg)\nGroup Carline name Basic engine (L) Transmission class\n1 Pickup A 2WD 4 A5 Reg cab, MB 235/75R15 100.0 68.8 47.8 800 27.30\n2 Pickup B 2WD 4 M5 Reg cab, MB 235/75R15 100.0 68.2 47.4 200 27.44\n3 Pickup C 2WD 4.5 A5 Reg cab, LB 255/70R17 125.0 68.8 59.7 300 23.79\n4 Pickup C 2WD 4 M5 Ext cab, MB 255/70R17 125.0 68.8 59.7 400 23.79\n5 Pickup C 4WD 4.5 A5 Crew cab, SB 275/70R17 150.0 69.0 71.9 400 22.27\n6 Pickup D 2WD 4.5 A6 Crew cab, SB 255/70R17 125.0 68.8 59.7 400 23.79\n7 Pickup E 2WD 5 A6 Ext cab, LB 255/70R17 125.0 68.8 59.7 500 23.79\n8 Pickup E 2WD 5 A6 Crew cab, MB 285/70R17 125.0 69.2 60.1 500 23.68\n9 Pickup F 2WD 4.5 A5 Reg cab, LB 255/70R17 125.0 68.9 59.8 1,600 23.76\n10 Pickup F 4WD 4.5 A5 Ext cab, MB 275/70R17 150.0 69.0 71.9 800 22.27\n11 Pickup F 4WD 4.5 A5 Crew cab, SB 285/70R17 150.0 69.2 72.1 800 22.27\nTotal 6,700\nNote 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:\nNote to Figure 2 to this appendix:\nSince 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).","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER V—NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 533—LIGHT TRUCK FUEL ECONOMY STANDARDS"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"3e5c6a3b286ada0daf3a651e168bac3d417dd3fe603843f1bba0685a1f30eacc","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-533.6","next":"us/49-cfr-534.1"},"notice":"GroundRules: Original legal text. Not legal advice."}