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Originally Posted by 93Cobra#2771
A slight downhill grade can cause a difference in mpg between two points coming and going, as well as a nice headwind.
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I agree, but not as much as I recorded. There is no way my coupe got 40mpg on my way home and only 16mpg on the way to work.
I will admit that my BMW gets slightly better milage on my way home; it has a milage computer and I watch it a lot. I usually get around 25mpg on the way to work and around 26mpg on the way home.