It seems the mpg display on Accord is limited to a maximum of 60 mpg. Yesterday I was coming back from the mountains. I was coming down from an altitude of 7600 feet to 5000 feet over a distance of 25 miles. I reset the trip meter before I started back. mpg started climbing quickly as I came down and reached 60 mpg by the time I had covered 8 miles. It then stayed at 60 mpg for the rest of the trip even though I am pretty sure actual mpg went well over 60. Display did not drop below 60 until I had drive some 6-7 miles in the city. So I am very sure actual mpg was higher and it just took some time for it to fall below 60 at which point display started being updated again.
It was rather amusing to see mpg display reading 60 mpg on an Accord after covering over 30 miles. Here is a picture:
