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Will you save gas when shifting from drive to neutral every time you coast? First of all,
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shifting from drive to neutral when you drive, it's not really good for your transmission. Your
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transmission will disengage at this moment, and then you will put it in drive when you're still
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in motion, and it will engage. And it will be a stressful thing for your transmission to engage
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while in motion. So if you do this once or twice a month, it will not kill your transmission, but
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if you do this 30 times a day, it will obviously make the life of your transmission shorter. And
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additionally, it doesn't make any sense in terms of fuel consumption, and your fuel consumption
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will even grow. The science behind this is really easy. So when your transmission is engaged with
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the engine and you're coasting, so you release the gas pedal, your transmission immediately shifts
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to the higher gear in order to prevent engine braking. So it will not engine brake a lot; it
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will, but slightly. And when your car decelerates, it will move to the lower gear, to the lower gear,
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up until the car is going with the 5 mph speed. So your transmission is always engaged with the
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engine, and your wheels drive the transmission when you're coasting, and the transmission drives
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the engine. This is how it works. And at this moment, in a lot of cars, you will have zero fuel
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consumption. So your, your engine will be driven by the wheels, by the inertia of your car. It will
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not be driven by the fuel, and it will only get some fuel when needed in order not to stall. So
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when you're coasting and your shifter is in drive, you actually use zero fuel. But what happens when
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you go to neutral? When you go to neutral, the transmission disengages from the engine,
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and the engine may stall if it doesn't get the fuel. So the brain of your engine will keep
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on sending some fuel and keeping the engine in the idling speed. It will need 800 to 900 RPM
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to keep working. So if you shift from drive to neutral and try coasting and saving your money,
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you're actually wasting your money. Because to keep your engine running at idle speed,
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you will need about 1 liter of fuel for every hour. It depends on the engine, but on average,
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you will need one liter of fuel for every hour. So just count how many hours you coast a month like
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this, and you will get the number of liters of fuel you waste every month. So no, guys,
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it doesn't make any sense to shift from drive to neutral when you're driving. Whether you want to
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save your transmission or you want to save some fuel, it doesn't make sense. You burn more fuel,
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and you actually kill your transmission very slowly, but you're doing this.
