I have 3500 now and just went on a little trip.
This is what we got. 34 MPG in a 60 mile stretch. HWY at 70 MPH
27 MPG within the city, stop lights and all.
What we did to test this was to reset the MPG at every drive type eg. HWY & CITY.
Warning, I do not know if this is a bug, but if you reset it while idling for a few minutes, say more than 3, the number will be off. I think it's a bug.
Here is the best way to check:
Go to a gas station and remember the pump you are using. Put the nozzle in and let the pump stop by itself. Do not over fill. Pull it out when it stops.
Rest trip odometer. Drive for about 30-50 miles.
Go back to the EXACT SAME PUMP THAT DAY you used, Re-fill and let it run till it stops by itself. Do not overfill.
Divide the miles driven by gallons used on the second fill up,
E.g. 30 miles divided by 1.2 gallons on second fill up = 25MPG
