The third of our five nominees for Green Car Reports' 2015 Best Car To Buy award is the new 2015 Hyundai Sonata Eco, the most fuel-efficient non-hybrid version of the Korean maker's mid-size sedan.
This new-for-2015 version of the Sonata is the sole model to use a turbocharged 1.6-liter engine, in this case producing 178 horsepower and 195 lb-ft of torque.
It's also the only one that offers Hyundai's own seven-speed dual-clutch transmission, which replaces than the conventional six-speed automatic used in other gasoline Sonatas, along with a higher final-drive ratio.
The result is gas mileages…
