Best I got was 32 MPG. I calculated this starting with a full tank and clearing the mileage.... drove 300 miles from San Antonio to Dallas. Got to Dallas and filled up the tank. Calculated the gallons I put in divided by the mileage and got 32 MPG. Of course it was set at Cruise control 75MPH with nobody on the road. Just a straight shot... no slowing down and speeding up for people.

I got 28 MPG coming back with traffic and other cars in my way.