502.08 miles, 13.215 gallon fill = 37.99 mpg.
EPA combined for this car is 25 mpg so I'm doing OK.
The car has a 17 gallon tank so I could have gone another 60 miles I guess. But I don't like to run the tank down very low, and I'm still getting used to this car. I certainly didn't want to run out of gas on the way to work.