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Author Topic: Anyone shifting to neutral on downhill to save gas ? Back to Topics
Vibe03
Veteran Author
Toronto

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Message Posted: Jul 21, 2010 9:12:55 AM

When it is not steep downhill and you don't need to brake the car to slow it down, coasting down around 55 mph at idling gives the engine a rest also save gas. Just not sure if the vacuum and other stuff are operating at normal level
REPLIES (newest first) Post a Reply
dontuknowOH
Champion Author Ohio

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Message Posted: Mar 31, 2015 10:29:50 AM

Yes, gravity gets noticed more when fuel prices rise upward. I think N.... is just a loose gear anyway it's quiet. No pain/strain.... economy.
b899
Champion Author Connecticut

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Message Posted: Mar 31, 2015 8:17:20 AM

no
hoopitup2000
Champion Author Virginia

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Message Posted: Mar 31, 2015 6:32:39 AM

No, only to coast . . . .
poetdog73
Champion Author Toledo

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Message Posted: Mar 31, 2015 5:32:09 AM

no just coast....
carinthuist
Champion Author San Francisco

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Message Posted: Mar 30, 2015 11:43:47 PM

no
SAButton
Veteran Author Atlanta

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Message Posted: Mar 30, 2015 7:51:34 AM

No
b899
Champion Author Connecticut

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Message Posted: Mar 30, 2015 6:50:24 AM

no
b899
Champion Author Connecticut

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Message Posted: Mar 27, 2015 6:57:09 AM

no
stoihor
Champion Author San Bernardino

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Message Posted: Mar 26, 2015 3:55:19 PM

no
StArrow68
Champion Author Oakland

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Message Posted: Mar 26, 2015 12:43:06 PM

Explained many times, not stupid if you know what you are doing and in the right kind of vehicle. Manual shift has no issues going into neutral, no impact on transmission. As for not saving fuel, you might want to talk to the engineers that programed my instant MPG meter. One particular mile grade the meter reads 85mpg off the gas in gear and it reads 99mpg off the gas in neutral. In addition, when in gear the car engine brakes and speed declines, requiring some go pedal to maintain speed, mpg meter notices and declines further. Out of gear the speed does not decline and does not require any brakes to maintain speed. Just a matter of knowing what you are working with and they are probably right, it would be stupid for anyone who doesn't know how to do it safely.
Enjoy what you drive.

[Edited by: StArrow68 at 3/26/2015 12:44:13 PM EST]
dontuknowOH
Champion Author Ohio

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Message Posted: Mar 26, 2015 10:24:25 AM

There sure isn't any benefit to shifting to N..... when going up-hill, unless the vehicle is traveling on Black Ice up the hill..... and then hydroplaning up-hill seems rather mute.
Off the go pedal saves fuel on the down-side only if, one doesn't then repeat and must soon travel upward another larger hill. I learned that driving a stick-shift during the "50's" and then I learned to also talk back to those "Pot Holes" only the(ones I Hit).... and Hoping that other stuff was still normal/OK!

Seems those P Holes have a vacuum of their own, they sucked way back then .... "1950"!
b899
Champion Author Connecticut

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Message Posted: Mar 26, 2015 7:16:56 AM

no
RalphHightower
Champion Author South Carolina

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Message Posted: Mar 26, 2015 6:12:20 AM

No
JoeKing
Champion Author Manitoba

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Message Posted: Mar 25, 2015 11:24:48 PM

hahaha...right!
luvmyburgi
Champion Author Ohio

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Message Posted: Mar 25, 2015 1:16:27 PM

Stupid idea
twt
Champion Author Virginia Beach

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Message Posted: Mar 25, 2015 8:04:47 AM

Stupid idea. Hard, on the transmission.
b899
Champion Author Connecticut

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Message Posted: Mar 25, 2015 7:40:03 AM

no
redfish67
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Message Posted: Mar 22, 2015 10:35:23 AM

no
JohnCur
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Message Posted: Mar 22, 2015 10:12:26 AM

no
JoeKing
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Message Posted: Mar 22, 2015 12:16:39 AM

no
RalphHightower
Champion Author South Carolina

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Message Posted: Mar 19, 2015 6:12:50 AM

no
8_Ball2014
Champion Author North Dakota

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Message Posted: Mar 19, 2015 1:37:09 AM

no
b899
Champion Author Connecticut

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Message Posted: Mar 18, 2015 6:17:33 AM

no
StArrow68
Champion Author Oakland

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Message Posted: Mar 18, 2015 4:07:32 AM

It might not save gas if you don't know what you are doing. According the the instant mpg reading in my car the mpg goes up about 15 to 20 mpg, then again, that would expect that the engineer that programmed the system knew what was up.
Enjoy what you drive, we do.
Straitliner
Champion Author Illinois

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Message Posted: Mar 17, 2015 8:52:26 PM

It does not save gas.
dontuknowOH
Champion Author Ohio

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Message Posted: Mar 17, 2015 2:13:59 PM

Well yes, I've noticed it takes a great effort for some drivers to even trip their turn signals on daily to make any drastic motion directional changes. Tea time......!
WEDDY
Champion Author Phoenix

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Message Posted: Mar 16, 2015 9:48:51 AM

No
TimeWillTell14
Rookie Author Mobile

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Message Posted: Mar 14, 2015 5:59:46 PM

Yes, but it gets old doing it after awhile.
redfish67
Champion Author Dallas

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Message Posted: Mar 14, 2015 11:50:52 AM

no
FocusSVT
Champion Author Toronto

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Message Posted: Mar 14, 2015 9:50:26 AM

Great idea and had been practicing it as my daily commute has a lot of slight incline that I shift to neutral and coast to the bottom and it ends up with a slightly higher speed than coasting in gear. Starting to see significant lower fuel consumption. Come Summer it will be more so
b899
Champion Author Connecticut

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Message Posted: Mar 14, 2015 8:25:41 AM

no
Nanjkm
Rookie Author Ontario

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Message Posted: Mar 11, 2015 7:27:23 PM

At times. My Dad did this and coasted down a hill, entering a small town, didn't realize he was over the speed limit and got his only ticket....he can laugh about it today...
Shockjock1961
Champion Author Illinois

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Message Posted: Mar 10, 2015 4:40:11 PM

The nice thing about a hybrid, when going down hill, the engine turns off and all that kinetic energy its converted and stored in the battery to be used at the bottom...
xbAG
Champion Author California

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Message Posted: Mar 9, 2015 9:53:51 PM

no, never even thought of it.
redfish67
Champion Author Dallas

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Message Posted: Mar 9, 2015 10:56:38 AM

no
b899
Champion Author Connecticut

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Message Posted: Mar 9, 2015 9:02:06 AM

no
hoopitup2000
Champion Author Virginia

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Message Posted: Mar 9, 2015 6:46:32 AM

Yes . . . . .
reni194611
Veteran Author Illinois

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Message Posted: Mar 8, 2015 10:15:45 PM

nope
b899
Champion Author Connecticut

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Message Posted: Mar 8, 2015 8:52:34 AM

no
cv
Champion Author Raleigh

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Message Posted: Mar 8, 2015 6:59:27 AM

No need in my case.
dontuknowOH
Champion Author Ohio

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Message Posted: Mar 7, 2015 11:40:59 AM

Too many PotHoles lately!
nickless
Champion Author PEI

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Message Posted: Mar 7, 2015 12:59:53 AM

no
Vin63
Champion Author San Bernardino

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Message Posted: Mar 6, 2015 9:26:39 AM

I have a common rail fuel injection, so I keep it gear and the fuel injection will shut off, so it saves more fuel than idling down hill.
ayokosh
Rookie Author New Jersey

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Message Posted: Mar 5, 2015 10:31:38 PM

hahaha ...yes
Ibbeach
Rookie Author San Diego

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Message Posted: Mar 5, 2015 10:05:46 PM

I have done this for years. While living in the mountain community of Pine Valley, east of San Diego, Ca. I can coast as much as 12- 15 miles heading west on I-8 just east of Descanso exit to past Harbinson Canyon, I'm convinced of it saving me Gallons = $$$$

Brian
juniperus98
Sophomore Author Alberta

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Message Posted: Mar 5, 2015 9:10:54 PM

no
silverwing2005
Rookie Author Winnipeg

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Message Posted: Mar 5, 2015 11:42:42 AM

"Leave it in gear. When your foot is off the throttle while in gear, NO gas is being burned. It takes more gas for the engine to idle in neutral."

I agree, but the vehicle doesn't coast as for or as fast when it is in gear. So it depends on how steep the slope is and what the speed limit is when it comes to leaving it in gear or not.
EZEd
Champion Author Birmingham

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Message Posted: Mar 5, 2015 11:00:06 AM

Leave it in gear. When your foot is off the throttle while in gear, NO gas is being burned. It takes more gas for the engine to idle in neutral.
1RORO
Sophomore Author Richmond

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Message Posted: Mar 5, 2015 10:49:41 AM

yes on my manuel trans,
94Rod
Veteran Author Orlando

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Message Posted: Mar 5, 2015 6:49:15 AM

With my manual transmission Honda, I do occasionally.
GLM4205
Champion Author Toledo

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Message Posted: Mar 5, 2015 5:35:21 AM

No
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