Quote:
Originally Posted by benhogan
I remember reading about the 56mph in Consumer Reports. It said something like effect like the fuel consumption at 56mph is less than driving at 55mph or 57mph.
Sounds logical to me but I don't care to prove or disprove it.
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Well, Consumer Reports is known to be a bit cavalier with their "facts"...........so to speak.
The true facts of the situation are as follows:
Every manufacturer must run the vehicle through a chassis dynomometer whereby a driver "drives" the vehicle over a prescribed course. The test is done both cold and hot and is referred to as a "Cold-75" or a "Hot-75". Speed varies between zero and 62mph.
The specific city and highway fuel economy is derived from the performance of the vehicle and its fuel consumption (as measured by the total exhaust output), based upon an EPA algorithm attached to the dyno.)
There is absolutely no capability to "tweak" the fuel economy for a given speed.