exhaust pollution reduced 95%
death rate down to less than one death per million vehicle miles
anti-skid braking
traction control
tire mileage greatly improved, roughly doubled
fuel economy more than doubled
rusting greatly reduced
air bags
crumple zones and advanced materials to absorb impact and protect occupants in crashes
sealed batteries
average fuel economy in 1975 was around 13 mpg, it has risen to approximately 26 mpg