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You are not logged in. #1 2012-05-18 12:46:49
Figuring out/obsessing over variation in MPGOK, so I know that less than a mile per gallon deviation is probably not statistically significant. I mean if my MPG were < 10 it would be, but at 24-26 I would say it can't be. Offline #2 2012-05-22 14:29:23
Re: Figuring out/obsessing over variation in MPGI also watch my MPG very closely and do take each MPG drop very personally. But there are some things that you have very little control of, like if you use a new gas station and that pump shuts off too soon and it looks like you got great MPG this time cause it took less gas to fill to the top, while next time you see your MPG drop down dead and keep wondering what you did wrong, when in fact there is nothing you could have done (well, always use same gas station and pump would help but not really feasible). Offline #3 2012-05-30 21:56:22
Re: Figuring out/obsessing over variation in MPGWow. I hadn't even THOUGHT about the pump shutting off too soon, but I think that could definitely make a difference - if different pumps have different shut-off sensitivities you could see a quarter gallon difference in "full" value, I bet. It does not take much time to pump enough gas to make a difference. Offline #4 2012-06-07 12:00:05
Re: Figuring out/obsessing over variation in MPGAs my dataset has increased in size, I am getting a better idea of the variation in MPG I will see. Plus, I love seeing how gas prices are dropping. During periods when I'm not tracking MPG I often won't notice the price of gas beyond a momentary thought, but when I'm obsessing (like now) I see the drop in gas prices and definitely am pleased. I also like to see the regional variations in price of gas - 30 miles east of home (where my work is, approximately) gas is 10-15 cents cheaper per gallon. Offline #5 2012-11-15 13:04:27
Re: Figuring out/obsessing over variation in MPGArrgghhh.... With the past 4-6 fillups I've seen my MPG drop. Again, I feel I'm getting upset about a non-statistically significant decrease in mileage but it still makes me say WTF!!?? I am wondering if the cold weather has something to do with it. We'll see, I did see a little skip back up today, and I had an oil change/service on Monday, so I'm still trying to see if I can reverse the downward slide. Offline #6 2012-11-15 17:10:05
Re: Figuring out/obsessing over variation in MPGI also noticed about 2MPG drop in last fill-up, so I blame it on cold weather and maybe gas vendors switching to winter gas mixture. Offline |