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Old 04-21-2012, 08:19 AM   #31
BrApple
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Thats pretty interesting data. I have found that my mpg has been increasing. But as noted there could be two things with that, I got the car this past Feb and the last few tanks I have only been doing 65 instead of 68 to 72 on the highway. I would say most of my driving is highway. the last two or three tanks I have broken 400 miles to the tank, but again had a bit more highway driving then before.

Looking at the graph I know the first two low points, besides the very first fill up, where Stop and Shop gas, where as every other tank has been Mobil.

As another point of interest, I wonder how many have ethanol in the gas and what percent, would be interesting to see how that plays into things.

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Old 04-21-2012, 09:00 AM   #32
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Thats pretty interesting data. I have found that my mpg has been increasing. But as noted there could be two things with that, I got the car this past Feb and the last few tanks I have only been doing 65 instead of 68 to 72 on the highway. I would say most of my driving is highway. the last two or three tanks I have broken 400 miles to the tank, but again had a bit more highway driving then before.

Looking at the graph I know the first two low points, besides the very first fill up, where Stop and Shop gas, where as every other tank has been Mobil.

As another point of interest, I wonder how many have ethanol in the gas and what percent, would be interesting to see how that plays into things.

Thanks for the addition. Yeah admittedly there are all sorts of things that could be skewing the data. Probably number one is that we're just coming out of the winter season so that could've skewed the more recent data down a bit (winter blend gas). I'm thinking in July I'll do a July '11 to July '12 graph with a polynomial trend line to see if we can see the effects of the winter season.

By the way, I had a '99 Contour Sport for 6 years. I wish I could go back in time and drive it new again to compare it to the Focus. Would probably still compare well in handling and power. I remember that 2.5L V6 being silky smooth. Of course the 4-speed killed economy - 24 or so overall and the most I could get on a highway trip was 27.
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Old 04-21-2012, 09:15 AM   #33
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By the way, I had a '99 Contour Sport for 6 years. I wish I could go back in time and drive it new again to compare it to the Focus. Would probably still compare well in handling and power. I remember that 2.5L V6 being silky smooth. Of course the 4-speed killed economy - 24 or so overall and the most I could get on a highway trip was 27.
I think that the cars are close. the V6 has more torque. There is something about the secondaries openning that the variable cam timing on the Focus just doesn't match. It has the same MTX-75 so on that end the driving experience is the same. It also a bigger car so that factors into it.

I was getting about the same mpg with mine, at 156k miles.
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Old 04-21-2012, 08:47 PM   #34
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It is also entirely possible that one or more of these cars belong to a parent whose child came of driving age during this span and shared the car, or the opposite shared at the beginning then got their own car. All variables need to be accounted for to be scientific or at least kind of accurate. You've compiled some interesting numbers but without all extraneous variables factored in or out. That is all they are.
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Old 04-21-2012, 09:15 PM   #35
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I would recommend throwing out the 13mpg gainer. That is a definite statistical anomaly or outlier and as such should best be viewed with suspicion. But it's your "gig" so do what you like...
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Old 04-21-2012, 09:55 PM   #36
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All variables need to be accounted for to be scientific or at least kind of accurate. You've compiled some interesting numbers but without all extraneous variables factored in or out. That is all they are.
That's all they're meant to be since that's all that's possible with the fuelly data. Everyone's free to interpret them as they like.
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