I have nearly 100K on a 2000 that hit the road in May of 2000 and I have checked the mileage on most tanks. I have ranged from 9. 5 MPG to 18. 75 MPG pencil figured, no trip computer, and adjusted for tire changes. I installed the Edge EZ and settled on the middle setting and have checked the mileage on my first trip. It had 70% Hwy and 30% city. I got 20. 54 MPG not trying very hard. It would have been a 17. 5 to 18 MPG tank before the EZ was installed. I love the power and will be very happy if the mileage goes up 1 to 2 MPG across the board.