Most were built in the two decades after 1970, giving the world's fleet an average age of 29. (carbonbrief.org)
Topping the charts with the highest fleet average fuel economy was Honda at 26.4 mpg, Volkswagen at 26.2 mpg, and Mazda at 25.9 mpg. (automobilemag.com)
European regulations require car makers to meet a 95g / km CO2 fleet average by 2021. (autocar.co.uk)