The fuel-efficient cars on this list are ready to come in and ... This compact SUV from South Korea stretches a gallon without breaking a sweat, thanks to its 1.6-liter four-cylinder engine ...

Buzz: Californians own the most fuel-efficient vehicles in the nation ... North Dakota and Wyoming at 22.5 mpg, then Montana at 22.8, South Dakota at 23, Iowa at 23.7, West Virginia at 23.9 ...

Over the next five years, however, the average fuel efficiency of the new cars Mazda sold in the United States dropped by nearly 7 percent, according to recent data from the Environmental ...

California cars are getting an average 31 miles per gallon, easily the best in the nation. The rest of the top 10 for fuel ... efficient? North Dakota and Wyoming at 22.5 mpg, then Montana at 22.8 ...