Hi dumb question here. How does the kw graph affect your gas mileage? My blue line states I'm averaging only 45 mpg. My yellow bars extend past the 45 mph mark so not sure what my average is yet. I am still on my first tank of gas just purchased car. How does the KW affect my mpg? Also in pictures I see people's kw up in the 10-15 range. Mine stays at 5 and below. Should I concern myself with this?