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Auto Start / Stop

F

Flanders

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How come the overall consensus is that this is not a preferred option? Thanks
 

C

Cruising68

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Imo the only good thing is it MAY marginally improve mileage. This is the only reason automakers use it. Downside is more wear on starting system and possible more wear since the oil drains out of the filter every time the motor shuts off. I have no need for it and find it annoying best case, unsafe worst case.


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B

Big Turk

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Cruising68 said:
Imo the only good thing is it MAY marginally improve mileage. This is the only reason automakers use it. Downside is more wear on starting system and possible more wear since the oil drains out of the filter every time the motor shuts off. I have no need for it and find it annoying best case, unsafe worst case.


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Click to expand...
And kills the battery.
 

V

viking

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The only reason the ASS system is even on vehicles is for the elevated EPA fuel mileage rating. It makes the declared Fuel Efficiency look better - ie...marketing. Does it improve mileage? Absolutely when used in a controlled environment. Is it a material improvement in real world.........I doubt it. The taxing of the starting system and drain on battery and annoyance factors have all been mentioned!
 

Stone17

Stone17

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viking said:
The only reason the ASS system is even on vehicles is for the elevated EPA fuel mileage rating. It makes the declared Fuel Efficiency look better - ie...marketing. Does it improve mileage? Absolutely when used in a controlled environment. Is it a material improvement in real world.........I doubt it. The taxing of the starting system and drain on battery and annoyance factors have all been mentioned!
Click to expand...
At the Ford Experience. They said the Auto Start Stop can save 1 MPG per a tank of fuel.
 

mharris1984

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With auto start on, the A/C doesn't work as well and the air that comes out is much warmer (this is when the truck is OFF). And here in Phoenix where you sit at a red light in 115+ temps, its extremally noticeable. And just annoying that there is that small stutter at the start when you go to take off... Sometimes the truck doesn't start right up and takes another half a second that seems like an eternity. It wears down the start system as a continue starting of the engine at every stop. The fuel millage you notice is nothing... the extra fuel you use sitting at a red light at idle is barely anything.

And the wife and I drive 99% of the time in Sport and so that setting turns it off too.

I have grown to like the auto brake holding. It took a bit for me to get accustomed to it, but the wife hates it.
 

SimonsGTS

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mharris1984 said:
With auto start on, the A/C doesn't work as well and the air that comes out is much warmer (this is when the truck is OFF). And here in Phoenix where you sit at a red light in 115+ temps, its extremally noticeable. And just annoying that there is that small stutter at the start when you go to take off... Sometimes the truck doesn't start right up and takes another half a second that seems like an eternity. It wears down the start system as a continue starting of the engine at every stop. The fuel millage you notice is nothing... the extra fuel you use sitting at a red light at idle is barely anything.

And the wife and I drive 99% of the time in Sport and so that setting turns it off too.

I have grown to like the auto brake holding. It took a bit for me to get accustomed to it, but the wife hates it.
Click to expand...
I also love the brake holding feature, we have plenty of trains in the area so I use it at train crossings since I won't be going anywhere soon lol!
 

hbalek

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SimonsGTS said:
I also love the brake holding feature, we have plenty of trains in the area so I use it at train crossings since I won't be going anywhere soon lol!
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Auto-hold, now that's one feature I can never live without! Whenever I drive another vehicle, I am annoyed to have to remember to keep my foot on the brake so the vehicle doesn't roll! LOL
 

SimonsGTS

SimonsGTS

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hbalek said:
Auto-hold, now that's one feature I can never live without! Whenever I drive another vehicle, I am annoyed to have to remember to keep my foot on the brake so the vehicle doesn't roll! LOL
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Yeah, it's also great in drive thrus when the person in front can't figure out what they want lol!
 

MikeHTally

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Stone17 said:
At the Ford Experience. They said the Auto Start Stop can save 1 MPG per a tank of fuel.
Click to expand...
5%?! Not even close. The fuel saving won't offset the cost of starters and batteries.
 

B

Big Turk

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MikeHTally said:
5%?! Not even close. The fuel saving won't offset the cost of starters and batteries.
Click to expand...
And the slight delay in acceleration in an emergency situation or quick left turn.
 

T

TMac

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The ASS isn't reasonable in everyday driving unless you live somewhere you might not move in traffic for long periods of time. It's the CAFE test that simulates situations like that so one way to inflate the fleet standards is to do something that mimics saving gas during that situation.

As others have said, in very short duration shut downs, it's hard on bearings and is hard on the battery (although, with current technology, you can usually restart within 240 degrees of crankshaft rotation). All in all, another feel-good function brought to us by bureaucrats with good intentions who also are idiots.
 

MikeHTally

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I hear cars all around starting up at traffic lights and just cringe. I'm fortunate to have only ten traffic lights between home & work and only have to stop at three or less. If my commute was the agony many experience, I'd probably be on my second battery if I left the A.S.S. engaged.
 

G

gafool25

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It’s a waste! Some tree hugger came up with it


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