2010 Edge Limited FWD with 25,500 miles. I just bought this unit used and an getting through my first tank of fuel. I have been noticing the MPG fluctuating depending on my driving conditions. This electronic reading is new to me and interesting (my previous car had no electronic mpg report output). I have reset this reading during operation and once I come to a stop. I drive mostly highway miles to and from work. About 12 of those miles are city and 32 are hwy. I have been watching the computer read anywhere from 18mpg (during stop and go or when we punch the engine to see how it performs) to 29.2 mpg (driving at a steady hwy speed of 60-70 mph manually or with cruise set). I am also doing my own manual calculations and will repost the average overall once I have more time/use. I know that when I went shopping for new or used that most units had varying mpg reading on the computer. I have to admit at first it was alarming because I was not very aware of the system. You get into a brand new Edge and the MPG read AVG MPG at 13.1 and it's a very uncomfortable thing to see. Especially when fuel is so high and my previous car was more than double this. But to my surprise, I am seeing a difference in the computer systems readings and so I am anxious to get my manual calculations to match up to the system. Overall I feel if I lose a few mpg's for the ride, comfort, power and space .... well, I may get over it. On the other hand if I get what I have been getting out of my previous car, with all the extras, then I got myself a screamin deal. I have another friend who is also driving a 2010 AWD Edge and she is averaging near 30 MPG. Not allot of help to this post. Just wanted to share info. I am really enjoying this ride!!!