“In model year 2022, the average estimated real-world CO2 emission rate for all new vehicles fell by 10 g/mi to 337 g/mi, the lowest ever measured. Real-world fuel economy increased by 0.6 mpg, to a record high 26.0 mpg.1 This is the largest single year improvement in CO2 emission rates and fuel economy in nine years.“
2023 model year is already showing improvement on this.
The long-term trend is encouraging (see chart) all while horsepower is up 88% since 1975 (see page 27).
