I was hoping to get better fuel consumption in my automatic car by moving to neutral and coasting down some of the steeper hills, instead of just taking my foot off the accelerator. Certainly the rev counter is lower when coasting. I was told ( by a pub expert) though I was not improving efficiency - and that in modern cars, if the engine is not labouring it shuts down the in flow of fuel somehow. I dont know......
2007-06-07 04:03:40 · 14 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
It won't make any real difference to your fuel consumption as your accelerator pedal controls the amount of fuel your carburetter or injector gets , and as one has already said it'll just add wear and tear to your auto box.
Also if you take a bend while coasting the car could become unstable and that's why its not recommended to do, may be illegal too ?.
2007-06-07 04:17:13 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Never ever put any vehicle in neutral no matter what while it's moving for any reason.You must be in control of it at all times.Down shift a manual if going down hill,engine compression will help slow it. I've heard that greek taxi's coast down hill with engine off to save gas but if your in an accident and it's shown you were not in control,you'll be in big trouble.
2016-05-18 23:55:19 · answer #2 · answered by catalina 3 · 0⤊ 0⤋
The information you got is correct (somewhat)
If while decelerating the engine speed is fairly high the computer does stop the flow of gas to the injectors.
However, if the engine speed is low, and it has the possibility of stalling, the computer will re initialize the injectors to keep the engine from stalling.
So basically it does both depending on engine speed.
ADDED:
Just leave it in gear. It's safer.
2007-06-07 04:11:06 · answer #3 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
Depends on the car. Some close the throttle to idling on overrun, some will shut the fuel off completely till you open up again. The trick however is to get it into D again when rolling. This can make expensive noises.
2007-06-07 04:23:00 · answer #4 · answered by The original Peter G 7 · 0⤊ 0⤋
You will certainly use less gasoline if you shift into nuetral, but there is the additional wear and tear of shifting back into gear when you level off and need to engage the transmission again. I'm not sure you're going to gain all that much and the potential to damage your transmission outweighs the fuel savings. If you happened to bump the shift lever and popped it into reverse, you'd have one hell of a mess on your hands...
2007-06-07 04:11:25 · answer #5 · answered by Anonymous · 1⤊ 0⤋
No I Don't Know Of Any Fuel Savings From Doing That... If Anything It Is Going Were Out Out Your Tranny Faster!
2007-06-07 04:09:27 · answer #6 · answered by frozenfire75i 3 · 0⤊ 0⤋
When you do that you have less control of the car and the potential for accidents is higher. Not worth the small, if at all, saving on fuel.
2007-06-07 04:12:11 · answer #7 · answered by David M 3 · 0⤊ 0⤋
Yes it does, but it is infact illegal to do in the UK.
It counts and being out of control!
Whatever you do don't turn the engine off altogther on a hill, steering and brakes will fail on you!!
2007-06-07 04:08:31 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Why would you shift into netural. I think you have more control of the car if the transmission is in a gear let your engine slow down your car.
2007-06-07 04:12:20 · answer #9 · answered by Steve A 2 · 0⤊ 0⤋
The savings are minor, but the wear on you auto tranny will be greater. Just as you should not tow an automatic, you should not coast to much either.
2007-06-07 04:08:19 · answer #10 · answered by Jody D 6 · 0⤊ 0⤋