2014 Nissan Leaf Named Cleanest Car in America

The zero-emissions, battery-powered LEAF has been named the cleanest production vehicle in the United States by Automotive Science Group (ASG). Before coming to this result, the research firm studied over 1,300 four-seat automobiles, measuring the impact of each on the environment from wells-to-wheels, a term that means they took into account the production and distribution of fuel for every vehicle when looking at emissions.