How many fuel efficient cars are in the US?
According to the U.S. Energy Information Administration (EIA), there were approximately 16 million fuel-efficient vehicles in the United States in 2022. This includes hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and all-electric vehicles (EVs). The EIA defines a fuel-efficient vehicle as one that gets at least 50 miles per gallon (MPG) in combined city and highway driving.