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I average (according to the DIC) around 27.5 MPG. Highway driving it's not hard to break 32 MPG. I do tend to reset it every time I fill up, and the average I'm giving here is after 3/4 of a tank of gas is run through. But it's pretty stable after the first 40 or 50 miles anyways. Admiteddly most of my driving is highway, I'm about 17 miles from work and probably 12 of that is on the interstate at 70 MPH.
Oh... And I drive an 06 V6 Sedan. Sunroof open has almost zero effect on mileage, I don't know about windows vs AC, I usually crack the windows down a couple inches, but rarely put them all the way down since I like the sun roof open and can't handle the wind noise. A/C is only on for the first 15 minutes or so of any trip to cool it off inside. I generally don't like breathing A/C air, so even if it's blazing hot and I have to leave it on I have the sunroof open or windows down a bit.
Oh... And I drive an 06 V6 Sedan. Sunroof open has almost zero effect on mileage, I don't know about windows vs AC, I usually crack the windows down a couple inches, but rarely put them all the way down since I like the sun roof open and can't handle the wind noise. A/C is only on for the first 15 minutes or so of any trip to cool it off inside. I generally don't like breathing A/C air, so even if it's blazing hot and I have to leave it on I have the sunroof open or windows down a bit.
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It doesn't really matter if you save fuel or not, because when I lock all 18 wheels up your going to slam into my icc bumper and total your car. It's just plain stupid to try and tailgate like that. I mean how poor are you that a few more mpg's is going to make or break it? Ok, now that the trucker in me is done bitching. You will get better mpg when you tailgate a truck. This is because when a truck goes down the road it creates a small low pressure zone behind the trailer. If you stay inside of this zone you will be "sucked" along and have less drag present on your car. Hence, you get better mpg. As for the mythbusters episode, they did their testing on a racetrack at speeds up to 45mph. You have to be going over 55mph at least for aerodynamics to become a factor. The rule that I've always used is that when I'm going faster than 55mph I'll use the a/c. But when I'm going slower than 55mpg I'll put the windows down.
. People are always flying down 65. I made that drive to lafayette for 5 1/2 years nearly ever weekend. It's always fun coming back south and getting behind someone from Chi-town that likes to do 85 +. I can't count how many times I was in a line of 4 or 5 cars doing around 90 mph coming down to Indy.
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