2020 Mirage ES. I Took a long Highway Trip this weekend, after driving about an hour at approx 65 MPH, I noticed on my gauge it said my average MPG was 50.3 MPG. Is that possible or is the MPG Gauge rigged. Anyone else getting these readings. I know we are supposed to get about 39 to 40 MPG but 50.3 Any inputs on this.. Thanks..