The estimations aren't quite right on my Honda Civic, upon installation of the device they were far too generous, then it sensed a disconnection so I had an asterisk next all stats for the remainder of the tank. Upon refill it just underestimated everything for the next two tanks. I just reset it on my most recent fill up and it is back to grossly overestimating, but I hope upon refill it will attempt to recalibrate and become more accurate.
In regards to figures, over estimation: I hit 80 mpg current today.
Under estimation: I was lucky to hit 30mpg.
For actual fill numbers I average around 55 mpg, check profile for tank specifics.
__________________
|