Automotive Trends
Carmakers are trying various technologies to get clean
In model year 2017, the average estimated real-world CO2 emission rate for all new vehicles fell by 3 grams per mile (g/mi) to 357 g/mi, the lowest level ever measured. Fuel economy increased by 0.2 miles per gallon to 24.9 mpg, achieving a record high.
Since 2004, CO2 emissions have decreased 23%, or 104 g/mi, and fuel economy has increased 29%, or 5.6 mpg. Over that time, CO2 emissions and fuel economy …