Great Plains Synfuels Plant (EPA)
The EPA reports that the real-world fuel economy of new cars improved by 1.1 miles per gallon of gasoline this year, reaching a record high of 27.1 miles per gallon for model year 2023 vehicles. That is vastly higher than the 13.1 miles per gallon first logged in 1975, when fuel economy data first began being measured. In 2023, real-world CO2 emissions hit a record low as well, reaching 319 grams of CO2 per mile, down 11 percent for the year thanks to the rise in EVs and plug-in hybrids. New, stricter emissions standards going into effect in model year 2027 will likely improve that even further, with a target of 170 grams per mile, and then by 2032 that’s linked to a target of 85 grams per mile. Then again, that does depend on whether or not there’s literally any enforcement mechanism left in the American government by that point.
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