Subconfiguration Target Standard (gallons per 100 miles) = [c x(WF)] + d
Where:
WF = Work Factor = [0.75 x (Payload Capacity + Xwd)] + [0.25 x Towing Capacity]
Xwd = 4wd Adjustment = 500 lbs if the vehicle group is equipped with 4wd and all-wheel drive, otherwise equals 0 lbs for 2wd.
Payload Capacity = GVWR (lbs)-Curb Weight (lbs) (for each vehicle group)
Towing Capacity = GCWR (lbs)-GVWR (lbs) (for each vehicle group)
Table 6-Coefficients for Mandatory Subconfiguration Target Standards
Model Year(s) c | c | d |
Phase 1 Alternative 1-Fixed Target Standards | ||
CI Vehicle Coefficients | ||
2016 to 2018 | 0.0004322 | 3.330 |
2019 to 2020 | 0.0004086 | 3.143 |
SI Vehicle Coefficients | ||
2016 to 2017 | 0.0005131 | 3.961 |
2018 to 2020 | 0.0004086 | 3.143 |
Phase 1 Alternative 2-Phased-in Target Standards | ||
CI Vehicle Coefficients | ||
2016 | 0.0004519 | 3.477 |
2017 | 0.0004371 | 3.369 |
2018 to 2020 | 0.0004086 | 3.143 |
SI Vehicle Coefficients | ||
2016 | 0.0005277 | 4.073 |
2017 | 0.0005176 | 3.983 |
2018 to 2020 | 0.0004951 | 3.815 |
Phase 2-Fixed Target Standards | ||
CI Vehicle Coefficients | ||
2021 | 0.0003988 | 3.065 |
2022 | 0.0003880 | 2.986 |
2023 | 0.0003792 | 2.917 |
2024 | 0.0003694 | 2.839 |
2025 | 0.0003605 | 2.770 |
2026 | 0.0003507 | 2.701 |
2027 and later | 0.0003418 | 2.633 |
SI Vehicle Coefficients | ||
2021 | 0.0004827 | 3.725 |
2022 | 0.0004703 | 3.623 |
2023 | 0.0004591 | 3.533 |
2024 | 0.0004478 | 3.443 |
2025 | 0.0004366 | 3.364 |
2026 | 0.0004253 | 3.274 |
2027 and later | 0.0004152 | 3.196 |
Where:
Subconfiguration Target Standardi= fuel consumption standard for each group of vehicles with same payload, towing capacity and drive configuration (gallons per 100 miles).
Volumei= production volume of each unique subconfiguration of a model type based upon payload, towing capacity and drive configuration.
Table 7-Coefficients for Voluntary Subconfiguration Target Standards
Model Year(s) | c | d |
CI Vehicle Coefficients | ||
2013 and 14 | 0.0004695 | 3.615 |
2015 | 0.0004656 | 3.595 |
SI Vehicle Coefficients | ||
2013 and 14 | 0.0005424 | 4.175 |
2015 | 0.0005390 | 4.152 |
Table 8-Phase 1 Vocational Vehicle Fuel C onsumption Standards
[Gallons per 1000 ton-miles]
Regulatory subcategories | Vocational LHD vehicles | Vocational MHD vehicles | Vocational HHD vehicles |
Model Years 2013 to 2016 Voluntary Standards | |||
Standard | 38.1139 | 22.9862 | 22.2004 |
Model Years 2017 to 2020 Mandatory Standards | |||
Standard | 36.6405 | 22.1022 | 21.8075 |
Table 9-Phase 2 Vocational Vehicle Fuel C onsumption Standards
[Gallons per 1,000 ton-miles]
Duty cycle | LHD Vocational vehicles | MHD Vocational vehicles | Vocational HHD vehicles |
Model Years 2021 to 2023 Standards for CI Vehicles | |||
Urban | 41.6503 | 29.0766 | 30.2554 |
Multi-Purpose | 36.6405 | 26.0314 | 25.6385 |
Regional | 30.5501 | 22.9862 | 20.2358 |
Model Years 2021 to 2023 Standards for SI Vehicles | |||
Urban | 51.8735 | 36.9078 | NA |
Multi-Purpose | 45.7972 | 32.9695 | NA |
Regional | 37.6955 | 29.3687 | NA |
Model Years 2024 to 2026 Standards for CI Vehicles | |||
Urban | 37.8193 | 26.6208 | 27.7996 |
Multi-Purpose | 33.7917 | 24.1650 | 23.7721 |
Regional | 29.0766 | 21.7092 | 19.0570 |
Model Years 2024 to 2026 Standards for SI Vehicles | |||
Urban | 48.6103 | 34.8824 | NA |
Multi-Purpose | 43.3217 | 31.3942 | NA |
Regional | 36.4577 | 28.2435 | NA |
Model Years 2027 and later Standards for CI Vehicles | |||
Urban | 36.0511 | 25.3438 | 26.4244 |
Multi-Purpose | 32.4165 | 23.0845 | 22.5933 |
Regional | 28.5855 | 21.4145 | 18.5658 |
Model Years 2027 and later Standards for SI Vehicles | |||
Urban | 46.4724 | 33.4196 | NA |
Multi-Purpose | 41.8589 | 30.1564 | NA |
Regional | 35.8951 | 27.7934 | NA |
Table 10-Phase 2 Custom Chassis Fuel Consumption Standards
[Gallon per 1,000 ton-mile]
Vehicle type1 | Assigned vehicle service class | MY 2021 | MY 2027 |
Coach Bus | HHD Vehicle | 20.6287 | 20.1375 |
Motor Home | MDH Vehicle | 22.3969 | 22.2004 |
School Bus | MHD Vehicle | 28.5855 | 26.6208 |
Other bus | HHD Vehicle | 29.4695 | 28.0943 |
Refuse hauler | HHD Vehicle | 30.7466 | 29.2731 |
Concrete mixer | HHD Vehicle | 31.3360 | 31.0413 |
Mixed-use vehicle | HHD Vehicle | 31.3360 | 31.0413 |
Emergency Vehicle | HHD Vehicle | 31.8271 | 31.3360 |
1Vehicle types are generally defined in §535.3. "Other bus" includes any bus that is not a school bus or a coach bus. A "mixed-use vehicle" is one that meets at least one of the criteria specified in 40 CFR 1037.631(a)(1) or at least one of the criteria in 40 CFR 1037.631(a)(2) , but not both.
Table 11-Truck Tractor Fuel Consumption Standards
[Gallons per 1,000 ton-miles]
Regulatory subcategories | Day cab | Sleeper cab | Heavy-Haul | |
Class 7 | Class 8 | Class 8 | ||
Phase 1-Model Years 2013 to 2015 Voluntary Standards | ||||
Low Roof | 10.5108 | 7.9568 | 6.6798 | |
Mid Roof | 11.6896 | 8.6444 | 7.4656 | |
High Roof | 12.1807 | 9.0373 | 7.3674 | |
Phase 1-Model Year 2016 Mandatory Standard | ||||
Low Roof | 10.5108 | 7.9568 | 6.6798 | NA |
Mid Roof | 11.6896 | 8.6444 | 7.4656 | |
High Roof | 12.1807 | 9.0373 | 7.3674 | |
Phase 1-Model Years 2017 to 2020 Mandatory Standards | ||||
Low Roof | 10.2161 | 7.8585 | 6.4833 | NA |
Mid Roof | 11.2967 | 8.4479 | 7.1709 | |
High Roof | 11.7878 | 8.7426 | 7.0727 | |
Phase 2-Model Years 2021 to 2023 Mandatory Standards | ||||
Low Roof | 10.36346 | 7.90766 | 7.10216 | 5.14735 |
Mid Roof | 11.11984 | 8.38900 | 7.66208 | |
High Roof | 11.14931 | 8.40864 | 7.43615 | |
Phase 2-Model Years 2024 to 2026 Mandatory Standards | ||||
Low Roof | 9.80354 | 7.48527 | 6.67976 | 4.93124 |
Mid Roof | 10.52063 | 7.94695 | 7.22004 | |
High Roof | 10.47151 | 7.89784 | 6.94499 | |
Phase 2-Model Years 2027 and later Mandatory Standards | ||||
Low Roof | 9.44990 | 7.21022 | 6.29666 | 4.74460 |
Mid Roof | 10.15717 | 7.66208 | 6.83694 | |
High Roof | 9.82318 | 7.43615 | 6.31631 |
Table 12-Alternate Fuel Consumption Standards for Tractors Above 120,000 Pounds GCWR for 2021 MY and Later Fuel C onsumption
[Gallons per 1,000 ton-miles]
Low roof day cab | Mid roof day cab | High roof day cab | Low roof sleeper cab | Mid roof sleeper cab | High roof sleeper cab |
3.59528 | 3.82122 | 3.84086 | 3.26130 | 3.52652 | 3.43811 |
Table 13-Primary Heavy-Duty Engine Fuel Consumption Standards
[Gallons per 100 hp-hr]
Regulatory subcategory | CI LHD engines and all other engines Vocational | CI MHD engines and all other engines | HHD CI engines and all other engines | SI engines | ||
Application | Vocational | Vocational | Tractor | Vocational | Tractor | All |
Phase 1-Voluntary Standards | ||||||
2015 | 7.0552 | |||||
2013 to 2016 | 5.8939 | 5.8939 | 4.9312 | 5.5697 | 4.666 | |
Phase 1-Mandatory Standards | ||||||
2016 | 7.0552 | |||||
2017 to 2020 | 5.6582 | 5.6582 | 4.6660 | 5.4519 | 4.4401 | 7.0552 |
Phase 2-Mandatory Standards | ||||||
2021 to 2023 | 5.5305 | 5.3536 | 4.6464 | 5.0393 | 4.3910 | 7.0552 |
2024 to 2026 | 5.4519 | 5.2849 | 4.5285 | 4.9705 | 4.2829 | 7.0552 |
2027 and later | 5.4224 | 5.2554 | 4.4892 | 4.9411 | 4.2436 | 7.0552 |
§535.7(d)(12).
Table 14-Phase 1 Alternative Phase-In CI Engine Fuel Consumption Standards
[Gallons per 100 hp-hr]
Tractors | LHD engines | MHD engines | HHD engines |
Model Years 2013 to 2015 | NA | 5.0295 | 4.7642 |
Model Years 2016 to 2020[DAGGER] | NA | 4.7839 | 4.5187 |
Vocational | LHD engines | MHD engines | HHD engines |
Model Years 2013 to 2015 | 6.0707 | 6.0707 | 5.6680 |
Model Years 2016 to 2020[DAGGER] | 5.6582 | 5.6582 | 5.4519 |
[DAGGER]Note: These alternate standards for 2016 and later are the same as the otherwise applicable standards for 2017 through 2020.
standard would apply to these manufacturers for model years 2020 through 2023. Manufacturers that voluntarily certify their engines to model year 2021 standards early would then be eligible for less stringent engine tractor standards in model years 2024 through 2026, as follows:
Table 15-Phase 2 Full Aero Box Van Fuel Consumption Standards
[Gallons per 1,000 ton-miles]
Model years | Dry van | Refrigerated van | ||
Long | Short | Long | Short | |
Voluntary Standards | ||||
2018 to 2020 | 7.98625 | 12.31827 | 8.15324 | 12.68173 |
Mandatory Standards | ||||
2021 to 2023 | 7.75049 | 12.15128 | 7.91749 | 12.52456 |
2024 to 2026 | 7.58350 | 11.87623 | 7.75049 | 12.24951 |
2027 and later | 7.43615 | 11.72888 | 7.60314 | 12.10216 |
Table 16-P hase 2 Fuel Consumption Standards for Partial-Aero Box Vans
[Gallons per 1,000 ton-mile]
Model year | Dry van | Refrigerated van | ||
Short | Long | Short | Long | |
2018-2020 | 12.31827 | 7.98625 | 12.68173 | 8.15324 |
2021 and later | 12.15128 | 7.91749 | 12.52456 | 8.08448 |
49 C.F.R. §535.5