I record each fill up but I haven't transferred data since I hit about 18,800 miles. I'm at 26K now. My average mileage through 18.8 miles is 26.83 mpg. I've done one autocross each year but otherwise this is normal street driving with an occasional trip of a few hundred miles. I drive pretty sedately most of the time but I get on it occasionally.
My guess is you are pushing it harder than I am. If you want to beat everybody away from the lights, you will pay for it at the gas pump. It's either that or there is a problem with your vehicle. Or maybe you have more stop and start driving in your mix than I do.