Obama Fuel-Efficiency Goals Put Automakers Ahead of Pace

Obama Fuel-Efficiency Goals Put Automakers Ahead of Pace

Chris Ratcliffe/Bloomberg

With the introduction of cars such Nissan Motor Co.’s electric Leaf and the proliferation of Toyota Motor Corp. (7203)’s hybrid Prius, fuel efficiency has gained almost 2 percent a year on average since 2007, according to U.S. data.