dcb -
Quote:
Originally Posted by dcb
The thing about that graph is that fuel is in the denominator, the "Gallons" in Miles/Gallons. So while it looks like things are leveling off, the gallons per mile are really going ballistic as the speed increases. For example, those two dark blue dots in the lower right represent a %37 drop in fuel economy. And it is %270 worse fuel consumption than at 50mph.
Does anyone NOT know what a denominator is?  |
I think the graph is fine. It is expressing information in units that it's target audience will readily understand. In this case it's USA MPG.
I also wouldn't look at fuel efficiency numbers above 80 MPH because they are not realistic for "normal" driving. In fact, I indent to use the graph as a teaching tool when people ask me about ecomodding. At 55 MPH, a person can get about 27 MPG in their BMW 535i. At 80 MPH, they're getting 20 MPG. That's about a 35% drop in MPG.
It still gets the point across in terms that people in the USA will understand.
My only critique would be that they didn't display data below 50 MPH, but again, the purpose of the graph was probably freeway driving.
CarloSW2