The race to become the most fuel-efficient is on. Auto manufactures all around the world are trying to stretch each gallon of gas further and further. As the race continues, what is coming out onto the market now stands to be the most fuel efficient ever. If you are interested in finding out which models are winning the race so far, then we have you covered. Check out our list of the best cars in terms of EPA Fuel-Economy Rating. These are the options that are topping the charts and staking their claim in history.