U.S. Emits Half of Car-Caused Greenhouse Gas, Study Says

Americans drive more in vehicles with lower fuel standards, says an environmental group.
By Janet Wilson, Times Staff Writer
June 28, 2006

American cars and pickup trucks are responsible for nearly half of the greenhouse gases emitted by automobiles globally, even though the nation's vehicles make up just 30% of the nearly 700 million cars in use, according to a new report by Environmental Defense.

Cars in the U.S. are driven more miles, face lower fuel economy standards and use fuel with more carbon than many of those driven in other countries, the authors found. According to the report by the environmental group, due out today, U.S. cars and light trucks were driven 2.6 trillion miles in 2004, equal to driving back and forth to Pluto more than 470 times.