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All about MPG All about maximizing your Miles Per Gallon (MPG)

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post #1 of 12 (permalink) Old 11-23-2010, 07:17 PM Thread Starter
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Hello everyone,
I drive a 2006 Cobalt LS, automatic transmission.

My friend told me that while coasting, weather it is downhill or to a stop, you get the best mileage in Neutral.

I heard that this is true for a manual tranny, but is it similar for an automatic car? will i do better throwing it in neutral while rolling downhill or to a stopsign? or does it not do anything for mileage?

thank you!!!

---------- Post added at 10:17 PM ---------- Previous post was at 10:12 PM ----------

also, heard to shift into neutral while at a red light... which should increase mpg as well.
this true?
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post #2 of 12 (permalink) Old 11-23-2010, 07:22 PM
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if you are coasting the cobalt has a fuel shutoff feature in which it stops sending fuel to the injectors so you get infinite MPG at that point, you don't get that in neutral



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post #3 of 12 (permalink) Old 11-23-2010, 10:28 PM
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Originally Posted by camopaint0707 View Post
if you are coasting the cobalt has a fuel shutoff feature in which it stops sending fuel to the injectors so you get infinite MPG at that point, you don't get that in neutral
does it work with manual or auto
ive heard that before, but didnt notice any difference if neutral helped or not

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post #4 of 12 (permalink) Old 11-23-2010, 10:58 PM
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No it does not help it can actually damage your transmission. No Joke.



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post #5 of 12 (permalink) Old 11-23-2010, 11:00 PM
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coasting in neutral? your also not supposed to that because in case you need to make an emergency maneuver its gonna take you a bit more time to realize to shift into drive than accelerate compared to just accelerate and that bit more time could be the diference from getting hit by a truck or missing it by inches



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post #6 of 12 (permalink) Old 11-23-2010, 11:07 PM
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No it does not help it can actually damage your transmission. No Joke.
^^^ This.... Any car that cannot be flat towed should never be rolled at any decent speed in "N". Check you owner's manual to see if your car can be flat towed.

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post #7 of 12 (permalink) Old 11-24-2010, 12:35 AM
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I believe thats why tow company's are suppost to tow rwd vehicles by the rear axle and fwd vehicles by the front axle.



Please Excuse the bad picture in my sig, but my sig has a link to the new awy my car looks in a much better light

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post #8 of 12 (permalink) Old 11-24-2010, 08:54 AM
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i think it is actually illegal to do this
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post #9 of 12 (permalink) Old 11-25-2010, 10:13 PM
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Originally Posted by throwinsparksat View Post
i think it is actually illegal to do this
It sure is. One of the quickest ways to get failed in a driving test while driving a manual (Usually with CDL tests) is to coast in neutral.

I never suggest coasting in neutral for any reason. Too unsafe.


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post #10 of 12 (permalink) Old 11-26-2010, 12:06 AM
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only time i put it in netural and coast a little bit is when im coming to a complete stop at a light or stop sgin. or when im slowing down to make a turn. but thats just for a few seconds before i put it into the right gear and speed i want my car at.

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