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.
Re: 2011 Sonata GLS HORRIBLE Gas Mileage. balshelmtov said: â. Our 2011 Sonata GLS gets an average of 13.5 mpg. Just to be thorough, we drive 60 mph on the highway, in the city there is no hard acceleration or braking.