Most Fuel-Efficient Vehicles of 2015

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6.  smart fortwo EV coupe
MSRP: $25,000
Type: electric
Motor: 55 kW DCPM
MPG (city/hwy/combined): 122 / 93 / 107
Annual fuel cost: electricity = $550
For those living in urban environs, it’s easy to understand the appeal of this diminutive vehicle. That said, the fortwo takes about 6 hours to reach full charge on a 240-volt system, which is a long time.

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