Most Fuel-Efficient New Cars

© Hyundai Motor America© Hyundai Motor America
2017 Hyundai Sonata Plug-In Hybrid
Starting MSRP: $34,600
MPGe (combined city / highway): 99 ; MPG (combined city / highway): 39
Charge time: 2.7 hours at 240V
Annual fuel cost: $750 (electricity + gas)
Driving range: 590 miles
Corporate sibling to the Kia Optima Plug-In Hybrid, the Hyundai Sonata Plug-In Hybrid is rated slightly lower in terms of overall efficiency, but not by much. In pure EV mode the Sonata Plug-In can travel about 27 miles before hybrid power takes over. A 9.8 kWh lithium-ion polymer battery pack powers the Sonata, as well as a 6-speed automatic transmission with Hyundai’s Transmission-Mounted Electrical Device — a 50-kW electric motor. Total output is rated at 202 horsepower.

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