Most Fuel-Efficient Maker Does It Without Plugs Or Hybrids

#hashtags: #Mazda

The most fuel-efficient automaker in the U.S. doesn't sell a single hybrid car, let alone battery-electric cars or plug-in hybrids. In fact, it currently doesn't have any vehicles with electrified powertrains in its whole U.S. lineup. That's because the company in question is Mazda, which is notably improving efficiency across its lineup through...