Rest of article:WASHINGTON—The Obama administration on Monday proposed labeling each passenger car with a government letter grade from A to D based on its fuel efficiency and emissions, part of a broader effort by the government to promote electric cars and other advanced-technology vehicles.
The new rules, released jointly by the Environmental Protection Agency and the Transportation Department, would be the most substantial changes in 30 years to the familiar price and mileage labels affixed to new cars on sale at dealerships.
Currently the labels must show how many miles per gallon a car gets and its estimated annual fuel costs. Under the rules proposed Monday, new labels would carry a letter grade assigned by regulators.
New Rules Proposed for Cars' Fuel Economy - WSJ.com