Ironic, gallons per mile is actually a more useful measure for high fuel efficiency vehicles because it directly represents fuel consumption. Differences in MPG are more misleading to intuition as MPG increases.
For example, upgrading from an 18mpg car to a 28mpg car (Option A) saves more fuel than upgrading from a 34mpg car to a 50mpg car (Option B). It is easy to be misled that Option B would result in more savings because it is an upgrade of 16mpg rather than only 10mpg in Option A.
GPM does not have this problem and the differences can be compared directly, Option A in GPM is 5.5gpm -> 3.5gpm, for a difference of 2gpm while Option B is 2.9gpm -> 2gpm for a difference of only 0.9gpm, making it easy to see that the Option A is a greater impact to fuel economy than Option B.
Ironic, gallons per mile is actually a more useful measure for high fuel efficiency vehicles because it directly represents fuel consumption. Differences in MPG are more misleading to intuition as MPG increases.
For example, upgrading from an 18mpg car to a 28mpg car (Option A) saves more fuel than upgrading from a 34mpg car to a 50mpg car (Option B). It is easy to be misled that Option B would result in more savings because it is an upgrade of 16mpg rather than only 10mpg in Option A.
GPM does not have this problem and the differences can be compared directly, Option A in GPM is 5.5gpm -> 3.5gpm, for a difference of 2gpm while Option B is 2.9gpm -> 2gpm for a difference of only 0.9gpm, making it easy to see that the Option A is a greater impact to fuel economy than Option B.
Per hundred miles, yes?
In civilized countries we use litres per hundred kilometres
I live in statesia what is this civilized you speak of
My car gets 40 rods to the hogshead and that’s the way I likes it!
But how many lentils per banana fart is that?