The Corporate Average Fuel Economy (CAFE) norms are primarily designed to increase fuel efficiency, which, in turn, will lower a company’s overall CO2 footprint.
At present, the existing limit for average CO2 emissions happens to be 130g/km. With CAFE II in effect, the target has been lowered to 113g/km.
The key difference between CAFE norms and BS6 II is that the former focuses on reducing all manner of harmful by-products from a car’s exhaust (sulphur, nitrogen oxide, etc), while the latter focuses exclusively on CO2 emissions. However, both norms force manufacturers to lower fuel consumed by their vehicles, and simultaneously, move towards electric mobility, as CAFE regulations, first introduced in 2017, apply to petrol, diesel, LPG and CNG vehicles.
Info Source: Money Control