What sort of elevation changes are you driving through? This weighs heavily on fuel economy. Also, are you driving into the wind or with it at your back?So, I am an hour into my road trip. My fuel mileage is abysmally low. Only showing tank endurance of 780 miles. Struggling to get over 44.4 average on the display. Car feels like it is struggling to maintain speed. Having to use a lot more throttle just to hold 65 miles per hour. Not very pleased right now.