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Why premium gas? Just a waiste of money. Runnig the car only 110 miles (about 4 gals) will not give you true gas mileage. The more miles and more gas needed to fill the tank will be a better indication. I'm getting 24 mpg in town, 33 mpg highway, 27 mpg combined city/hwy. This is running 300 miles per tank. A friend of mine has the same Sonata and is averaging about the same mpg. Also the more mph will cut down on gas mileage.Report it
I traveled to California and back to New York twice with my 2011. Both trips I averaged 35 MPG on regular gas. I got 40 MPG once while slowing down for a 10 mile stretch where they were working on the highway. The vehicle has 40000 miles on it.Report it
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