Rolling on neutral from any gear, downhill, etc.

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Originally Posted by chilli

i thought being in neutral doesnt slow you down, doesnt it cause the car to roll more freely in comparison to being in gear? [refering to first post]

im probably wrong..
=p

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being in neutral dosent slow you down at all. It is the entire rolling weight of your car plus its momentum. If you are in gear , you have the engines HP/KW to help slow it down.

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Originally Posted by chilli

i thought being in neutral doesnt slow you down, doesnt it cause the car to roll more freely in comparison to being in gear? [refering to first post]

im probably wrong..
=p

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he meant, when he was on the freeway in excess of 100kmh...at those speeds ur car needs power to counter drag coefficient...
no power to the wheels will slow u down...

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Originally Posted by blk_shadow

even the law said, when you are stopping either on a red light or not. its best to put into first gear. just in case someone hit you from the back and doesn't let your car roll into the middle of the street.

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No, even when you are in 1st gear, your foot is on the clutch, effectively making it "neutral"

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Originally Posted by cristian

he meant, when he was on the freeway in excess of 100kmh...at those speeds ur car needs power to counter drag coefficient...
no power to the wheels will slow u down...

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chilli is right. When you are at 100km/h, you slow down faster with your foot off the accelerator when in gear compared to being in neutral.

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Originally Posted by aaronng

chilli is right. When you are at 100km/h, you slow down faster with your foot off the accelerator when in gear compared to being in neutral.

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i agree with that, its just hard to determine the circumstance, i didnt realize chilli was referring to engine braking...

i would hate for the engine to break at 100km/h!

I think he meant engine braking. Or were you kidding around? :P

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Originally Posted by tinkerbell

i would hate for the engine to break at 100km/h!

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bwhahahahahaha

what happened to the normal "braking" ? ;)

i leave my car in neutral and run around fred flintstone style

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Originally Posted by xenonkuraz

I think he meant engine braking. Or were you kidding around? :P

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It's an alternative technique, just like heal-toeing. :p

for most modern cars, coasting in neutral uses more fuel since the engine needs fuel to keep it from stalling, as if its in gear there's rolling momentum to keep the engine running. Also try braking hard whilst in gear and in neutral, you'll notice the in a car with no ABS, braking in neutral will cause the wheels to lock up much faster compared when you have it in gear.. so yeah, it is a bad habit and its unsafe

the proper answer to the fuel question on a Honda forum is:

the Honda PGM-FI system that controls the engine shuts off the fuel injectors if the throttle is closed and the car is in motion and the RPM is about ~1200rpm (rpm differs for different models)

therefore, as D4rk4n63l says, the engine will use more fuel if it is idling compared to if it is coasting...