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 2017 Hyundai Sonata has a long list of standard and available features and delivers a smooth ride. It gets excellent gas mileage, and the trunk is among the largest in the class. With so much to like, it's easy to see why the Sonata is near the top of our midsize car rankings.