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Last year I started tracking my fuel economy using my iPhone. Found out my cars computer was lying to me by about 2 mpg on average. I was able to bring my mileage up from 37 to 39.5 by driving the speed limit and accelerating more slowly. Would like to make some modifications but don't really know what to start with. I have also reduced my driving distance by taking a more direct path. My yearly driving is in excess of 45K miles.
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