Hybrid - 43/48 MPG

[madokie]

3. Is this actually dividing the miles driven by the gallons used?

In my experience when I do that I find the computer on the vehicle to be more than generous, in some cases.
We have a 2014 ford focus and have about 4500 miles on it right now and the computer tells me we are getting 32.6 to 32.8 mpg over all. When I divide the miles we drive by the gallons we use it comes to 32.01, this last tank, it'll range from 31 to this last figure of 32. This cars computer is the closest to telling us the actual mileage of any I've been around.
My neighbor has a 2008 Prius and the computer tells him he is getting from 48 to 52 mpg but when challenged by me to check the actual mileage he gets it came back as 42 mpg.
My brother and his wife have a 2012 Ford crown vic that the computer tells them they're getting 25 to 26, sometimes 27 mpg on long drives but when he checks the actual miles driven by the gallons used it comes back as 21 to 22 mpg.
As I said our focus has the most honest read out of all the vehicles I've been around where the owners actually check the mpg the old way by dividing miles driven by gallons used.

what I'm getting at I guess is I think in order to meet the CAFE standards mandated by the government the auto manufacturers have started putting these computer readouts in most all cars and as I said the ones I know for a fact the readings are skewed towards the high end.

Just curious