The federal Environmental Protection Agency announced that new cars and trucks sold in the US during 2012 attained a record high of 23.6 miles per gallon, thanks to improved engines and transmissions. This marks a significant improvement of 1.2 mpg over 2011. Mazda led the way in selling cars with the highest gas mileage, at 27.1 mpg on average. Collectively, mileage is up 12% since 2008 and 22% since 2004. EPA Transportation and Air Quality Director Christopher Grundler noted that, while cars will increase in price as a result of these innovations, the savings at the pump will more than offset the price of a new vehicle.