Window stickers coming for the 2013 model year will give car shoppers more information than previous versions. All 2013 model vehicles are required to have a revised fuel-economy sticker. Among the information that will be required on the revised fuel economy stickers:¨ Comparison of energy use and cost between new-technology cars using electricity and conventional cars that are gasoline-powered.¨ Estimates of how much consumers will save or spend on fuel over the next five years. For instance, a sticker for a car that gets 26 miles per gallon says the driver will save $1,850 in fuel costs over five years compared with a vehicle that get an average 22 MPG.¨ Estimate of how much fuel—or in some cases, electricity—it takes to drive the vehicle 100 miles.¨ Ratings of how a model compares to others for smog emissions and emissions of pollution that contribute to climate change. Some manufacturers already have voluntarily put the label on some 2012 models.