Starting in 2011 the CAFE standards are newly expressed as mathematical functions depending on vehicle "footprint", a measure of vehicle size determined by multiplying the vehicle’s wheelbase by its average track width. A complicated 2011 mathematical formula was replaced starting in 2012 with a simpler inverse-linear formula with cut-off values. [3] CAFE footprint requirements are set up such that a vehicle with a larger footprint has a lower fuel economy requirement than a vehicle with a smaller footprint. For example, the 2012 Honda Fit with a footprint of 40 sq ft (3.7 m2) must achieve fuel economy (as measured for CAFE) of 36 miles per US gallon (6.5 l/100 km), equivalent to a published fuel economy of 27 miles per US gallon (8.7 l/100 km), while a Ford F-150 with its footprint of 65–75 sq ft (6.0–7.0 m2) must achieve CAFE fuel economy of 22 miles per US gallon (11 l/100 km), i.e., 17 miles per US gallon (14 l/100 km) published.
Corporate Average Fuel Economy - Wikipedia, the free encyclopedia
Agreed standards by model year, 2011-2025[edit]
2011-2025 CAFE standards for each model year in miles per gallon.[46]
Model Year Passenger Cars Light Trucks
"footprint": 41 sq ft (3.8 m2) or smaller (e.g. 2011 Honda Fit) "footprint": 55 sq ft (5.1 m2) or bigger (e.g. Mercedes-Benz S-Class) "footprint": 41 sq ft (3.8 m2) or smaller (e.g. Chevy s10) "footprint": 75 sq ft (7.0 m2) or bigger (e.g. Ford F-150)
CAFE EPA Window Sticker CAFE EPA Window Sticker CAFE EPA Window Sticker CAFE EPA Window Sticker
2012 36 27 28 21 30 23 22 17
2013 37 28 28.5 22 31 24 22.5 17
2014 38 28 29 22 32 24 23 18
2015 39 29 30 23 33 25 23.5 18
2016 41 31 31 24 34 26 24.5 19
2017 44 33 33 25 36 27 25 19
2018 45 34 34 26 37 28 25 19
2019 47 35 35 26 38 28 25 19
2020 49 36 36 27 39 29 25 19
2021 51 37 38 28 42 31 25 19
2022 53 38 40 30 44 33 26 20
2023 56 40 42 31 46 34 27 21
2024 58 41 44 33 48 36 28.5 22
2025 60 43 46 34 50 37 30 23