The changed label, mandated by the 2007 energy law, includes the same information on city and highway miles per gallon and estimated driving costs based on 15,000 miles a year now available.
But the new labels add more comparative information, rating cars on mileage, greenhouse gas contribution, and other air pollutants from tailpipe emissions. That means that consumers can look at a label to see how one vehicle compares to all available vehicles, rather than only cars in a specific class.
One label proposes grades, ranging from and A plus to a D. There are no failing grades, since vehicles need to comply with the Clean Air Act.
CNET News: http://news.cnet.com/8301-11128_3-20015069-54.html"
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