The 2015 Hyundai Sonata Eco pairs a 1.6-liter turbocharged GDI four-cylinder engine with a seven-speed dual-clutch transmission, delivering 178 horsepower and an EPA-estimated 38 mpg highway. These first-drive photos show the Sonata Eco in Venetian Red, covering exterior angles, the engine bay, and the premium beige leather interior. Read the 2015 Hyundai Sonata Eco Review.