Quote:
Originally Posted by CaptainDan
If you compare two vehicles, the miles you can go per a set amount of fuel matters less than the fuel used over a set distance. Because I have a certain SET distance I need to drive. To work, to school, to the store, etc....those distances don't change if I get better fuel economy, the fuel used DOES.
mpg is an INDIRECT measurement of fuel economy.
gp100m is a DIRECT measurement of fuel economy.
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My car gets 20 MPG (or 5 gal/100 mi).
Let's say that I drive 40 miles per day.
40 / 20 = 2 gallons
40 / 100 = 0.4 * 5 gal/100 mi = 2 gallons
Unless I'm driving in 100 mile increments, that's twice as much work!