Sometimes when I'm sitting still or idle, the throttle bar will be fully black as if I'm pushing the pedal fully down. Is this normal once in a while? Nothing abnormal about the car, it just does it sometimes. Just curious, thanks!
Yeah normal, that is not a "throttle bar" it's a meter showing instantaneous fuel economy. When you are at a stop you are getting 0 miles per gallon, when you depress the gas pedal you start moving and even though you're using more fuel than at an idle, you're actually getting somewhere for it, so the instantaneous fuel economy goes up.