Quote:
Originally Posted by Ecobalt
When I downshift from 5th to 4th on a hill in my Cobalt, the driver information center "instantaneous mileage" display shows the same mpg before and after the shift. So, I have a bias toward downshifting so as to not "lug" the engine, or even come close to lugging.
BTW, my Cobalt has a tall fifth gear, which is one of the features that enables it to have the highest highway fuel economy of any car that is not a diesel or a hybrid.
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Neat on the tall 5th gear thing. Your 5th gear is probably taller than my 6th. *jealous*
I wonder about factory instantaneous and average mpg. I guess technology has gotten a lot better but in the 90s I never trusted those things, and they never seemed to jive with the simple math of "fill up, divide gallons by miles".