Appointments & care. At Mayo Clinic, we take the time to listen, to find answers and to provide you the best care. Respiratory syncytial virus (RSV) is a virus that causes infections of the lungs and respiratory tract.
2015 Hyundai Sonata Eco: Gas Mileage Review. The 2015 Hyundai Sonata Eco is the Korean maker's most fuel-efficient mid-size sedan that doesn't use a hybrid powertrain. And it highlights the two parallel paths that automakers are taking as they work to boost gas mileage ratings to meet steadily rising corporate average fuel economy rules.
The gasoline engine for the Sonata Hybrid is a 2.0-liter four-cylinder that uses Gasoline Direct Injection for improved efficiency. According to Hyundai's estimates, it puts out 154 horsepower and 140 lb.-ft. of torque. As for the electric motor it produces about 51 horsepower and 151 lb.-ft. of torque.