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Study finds that increased vehicle travel and decreased occupancy have undercut the impact of improving fuel economy over last 40 years

Green Car Congress

Sivak found that while the vehicle fuel economy of the entire light-duty fleet improved by 40% (from 13 mpg US to 21.6 l/100km), because of the decrease in vehicle load, the occupant fuel economy only improved by 17% (from 24.8 —Sivak 2013. occupants carried) decreased by 27% (from 1.9 mpg US, or from 18.1

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California ARB mods to ZEV regulations for IVMs would result in ~1.9% drop in total ZEV/TZEV units 2018-2025; no impact on air quality requirements

Green Car Congress

Its goal was and is to reduce the environmental impact of light-duty vehicles through the gradual introduction of ZEVs into the California fleet. Europe has gasoline taxes over $4 per gallon and still finds the need to adopt aggressive performance standards for cars to reduce GHGs and oil use. ZEV credit level by type.

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