What comes out of a car’s tailpipe is just as important as what goes into the fuel tank. Fuel economy gets lots of play because of rising fuel costs, but exhaust emissions from motor vehicles have a huge impact on the planet and people’s health. Internal combustion engines emit a host of harmful gases as a result of burning fossil fuels like gasoline, diesel, and ethanol. These highly toxic smog-forming emissions include carbon monoxide, formaldehyde, and other particulate matter that create the dark smoke seen billowing from diesel trucks and the gray haze hanging over large cities. In addition to those pollutants, which are harmful to human health, vehicles also emit what the U.S. Environmental Protection Agency calls “greenhouse gases,†with carbon dioxide (CO2) being the main offender. Motor vehicles are the largest source of CO2 emissions, accounting for 51 percent of total emissions, according to the EPA. Burning one gallon of gasoline emits 20 pounds of CO2. CO2 and other greenhouse gases aren’t as immediately harmful to plants and animals, but scientists believe that they are causing global climate change as they collect in the earth’s atmosphere. We have assembled a list of luxury and non-luxury vehicles that emit the fewest pollutants according to the EPA. Top 10 Cars That Pollute the Least - Yahoo! Canada Autos
how can the top 3 be the most pollutant and have the largest carbon footpring, just because they cost the most?
