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Originally Posted by Hankinator
I agree with the other posters and their suggestions with this addition. Could the something else causing less coasting be attributed to the vehicle weight? Your older/other vehicle is surely heavier than the Aveo. Less weight...less inertia...less coasting ability. Something to consider.
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Nope, it's not what you expected. My other car is an '89 Mitsu Galant. It weighs approximately the same as the Aveo, although it is a bigger car with a larger engine (2 liter vs. 1.6) and has much better acceleration. Over the past two decades cars have gotten much heavier, which runs contrary to improving FE. I get 20 MPG in city driving in the Galant, and only a scant 2 MPG better in the smaller Aveo.
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I have also wondered if it would be worth repacking wheel bearings with synthetic grease and "adjusting" the tightness of the spindle nut for better coasting.
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I doubt that synthetic grease will improve FE much, but the adjustment of that spindle nut is what I am referring to. If the wheel doesn't turn freely, it may be too tight, and rolling resistance matters.
