Fact #785: June 24, 2013
Many Cars Pollute Less Despite Increases in Size
As new vehicles become more efficient, the amount of carbon dioxide (CO2) they produce decreases. Shown below are several examples of model year (MY) 2012 cars that have decreased the amount of CO2 they produce (in grams per mile) despite the fact that they are larger (in interior volume) than they were ten years ago. Of the examples, the Kia Optima had the largest decline in CO2 emissions in the ten-year period, and the Nissan Sentra and VW Jetta had the greatest increase in interior volume while still reducing CO2 emissions.
Grams per mile
|Source: Oak Ridge National Laboratory, 2012 Vehicle Technologies Market Report, February 2013, accessed May 30, 2013.|