Seraphitia102 said:I have done this study already. I always reset my trip meter to zero every time I fill up to full and divide my total mileage that I drove within that tank by the amount of gallons that went in.
My own study shows 15mpg with the top down on most drives, and 17mpg with the top up the whole time on more than 3 consecutive fuel fill-ups. I always calculate my mileage every tank and these are the consistent numbers I usually get.
Seraphitia102 said:I have done this study already. I always reset my trip meter to zero every time I fill up to full and divide my total mileage that I drove within that tank by the amount of gallons that went in.
My own study shows 15mpg with the top down on most drives, and 17mpg with the top up the whole time on more than 3 consecutive fuel fill-ups. I always calculate my mileage every tank and these are the consistent numbers I usually get.
DocG2828 said:Mythbusters did a similar test and found the SUV with the windows down had worse gas mileage. You'd probably get better gas mileage with your top up and AC on than with the top down. But hell....we don't drive mustangs to save money on gas! I leave my windows down and AC off just so I can hear my exhaust
DocG2828 said:How do you know how many gallons you used exactly? I can see writing down what you filled it up with, but then how do you know you didn't use more or less than what you put in? Unless you run it till its totally empty and dies, then fill it up, and run it until it dies again. No way you'd know exactly how much fuel you used otherwise, which will effect your #'s. Even being off by 1 gallon of gas usage can affect your numbers by 2-3 mpg.
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