So i got my first 55+ MPG tank (my 3rd tank since I bought the car.) I am super excited except for I noticed that the ICE is completely inaccurate at times. For most of my freeway trips (about 85% of my travels) I averaged around 56.7-57.2MPG until I took 2 short 5 mile trips. Each of those trips my MPG went from 57.2 down to 56.7 before I even got out of my parking garage. My question is, is it me or is the ICE just horribly inaccurate to begin with?