Auto StartStop

[Gregs24]

Although violation of the k.i.s.s. principle doesn’t make it simpler. A more robust requirement indicates a stronger need.

Yes completely correct. You engineer the vehicle for the use it will get. That is why you don't run a Mustang on 155R13 wheels and tyres as they are technically unsuitable.

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[Frogdog1]

Back to wear "the rubber meets the road", if anyone that owns a 5 liter Mustang really cared about air quality or gas mileage, we would all be driving a Prius or other economy car. Like another poster has repeatedly said, I just don't like it , I believe it wears engines and parts quicker, and I'm not going to use start stop. The EPA is in the process of doing away "off cycle credits" and there must be a reason.

 

[Gregs24]

You two are arguing different points.

You're correct that modern cars are designed with S/S in mind, and thus can handle it

GTB is correct that it is still better to avoid using it, as it is less wear and tear.

Now kiss and make up

But that is like saying don't use your wipers in the rain or they will wear out.

The wear / stress using S/S is greater on certain parts but they are designed differently (or completely replaced) with that in mind. So using S/S will not wear out your car faster.

The long and short is that there is no need to turn it off to save you car from wearing out. You can turn it off as a personal choice but that is all it is.

 

[Gregs24]

Back to wear "the rubber meets the road", if anyone that owns a 5 liter Mustang really cared about air quality or gas mileage, we would all be driving a Prius or other economy car. Like another poster has repeatedly said, I just don't like it, I believe it wears engines and parts quicker, and I'm not going to use start stop.

If nothing else your belief is wrong as evidenced however if you choose to turn it off then that is your choice. Just turn it off because you don't like it but don't pretend there is any logic behind it.

My Mustang actually does better mpg than many SUVs and trucks so actually it is green after all!

 

[Cz_Ziemniak]

But that is like saying don't use your wipers in the rain or they will wear out.

The wear / stress using S/S is greater on certain parts but they are designed differently (or completely replaced) with that in mind. So using S/S will not wear out your car faster.

The long and short is that there is no need to turn it off to save you car from wearing out. You can turn it off as a personal choice but that is all it is.

--> No its not. Wipers are a cheap inexpensive wear and tear item. Timing components are not. Even if its unlikely it will cause issues down the road, why even take the chance. You are wearing components more, period. Whether or not other things on the engine let go beforehand that make that irrelevant is a different story, but I have seen plenty of cases where the timing getting thrown off was indeed the culprit.

Its not stress, its just friction. Added friction x amount of times across x amount of years, multiplied by x amount of links.

 

[turtletim]

It varies widely with vehicle type. Remember CAFE is corporate average. And regulators make political deals with the industry regarding testing and data. I've been retired for ten years on this. The benefit number we used as a baseline was 0.1 mpg. Some results were better of course but most vehicles were not. Many researchers publish maximum possible results from highly controlled laboratory environments. They are funded to support a political environmental objective. I tested vehicles in real world fleet uses. Not once did the models match our data.

 

[Zig]

Back to wear "the rubber meets the road", if anyone that owns a 5 liter Mustang really cared about air quality or gas mileage, we would all be driving a Prius or other economy car. Like another poster has repeatedly said, I just don't like , I believe it wears engines and parts quicker, and I'm not going to use start stop. The EPA is in the process of doing away "off cycle credits" and there must be a reason.

I wonder, does the ‘button’ show more wear the more it is used?

 

[Gregs24]

--> No its not. Wipers are a cheap inexpensive wear and tear item. Timing components are not. Even if its unlikely it will cause issues down the road, why even take the chance. You are wearing components more, period. Whether or not other things on the engine let go beforehand that make that irrelevant is a different story, but I have seen plenty of cases where the timing getting thrown off was indeed the culprit.

Best no to drive it at all then it is guaranteed not to wear out

 

[Cz_Ziemniak]

Best no to drive it at all then it is guaranteed not to wear out

Now you're just being thick

 

[Kevi]

It's only purpose is emissions reduction. It does increase engine wear. Components are not riding on oil film during the stop. So you have metal to metal contact and increased friction. Main and cam bearings are taking a hit every time you start stop. Significant engine wear will ensue. I always disable mine. Easy to do with your custom profile. Just clicks up when you start. Disables stop start, opens the exhaust, and changes my gauges to what I like.

 

[Zig]

My Mustang actually does better mpg than many SUVs and trucks so actually it is green after all!

I must be color blind the avatar looks blue to me 🫣

 

[Gregs24]

It varies widely with vehicle type. Remember CAFE is corporate average. And regulators make political deals with the industry regarding testing and data. I've been retired for ten years on this. The benefit number we used as a baseline was 0.1 mpg. Some results were better of course but most vehicles were not. Many researchers publish maximum possible results from highly controlled laboratory environments. They are funded to support a political environmental objective. I tested vehicles in real world fleet uses. Not once did the models match our data.

Pretty sure all emissions values for vehicles are from strictly determined testing processes which vary by region based on their legislation

I have posted again this paper which contains many global references to remove your US political problems

Practical investigation and evaluation of the Start/Stop system's impact on the engine's fuel use, noise output, and pollutant emissions - ScienceDirect

 

[Gregs24]

I must be color blind the avatar looks blue to me 🫣

I did see an Eruption Green S550 last week - what a great colour that was

 

[Gregs24]

Now you're just being thick

No it's called sarcasm - I hear it is lost on you Americans

 

[Cz_Ziemniak]

No it's called sarcasm - I hear it is lost on you Americans

I can hear the sarcasm perfectly fine, thanks, lmao.

what's not lost on me is that you're genuinely suggesting that disabling stop/start under the pretense of minimizing wear on certain components is not a completely valid reason.

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