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Does taking car out of gear and letting it roll improve fuel economy, MPG ? watch

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    If I'm driving towards the end of the motorway doing 70 mph, going downhill or on a straight road and I took my car out of gear to let it roll to the end of the road, say 300 metres e.t.c., would this help my fuel economy?

    What about if I continuously put my car in / out of gear in town traffic and letting ti roll, would that save on fuel ?
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    It would, yes. However it would use less fuel if you left it in gear and let it run down.

    A modern ecu will use no fuel on overrun whereas coasting in neutral uses some to keep the engine at idle
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    Precisely what the guy above said, the roadwheels turning the transmission keep the engine turning over when in gear. But in neutral, fuel is required to maintain idle engine speeds.

    Besides, keeping the car in gear on coming to a halt will reduce wear on your brake friction materials.
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    No and No for the reasons stated
 
 
 
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