Owning a 911 isn't about MPG...but
05-02-2017, 11:15 AM
#16
Burning Brakes
Good time to ask this question, since it's been in my mind the past few road trips.
Does anyone with 7MT think the "auto stop/start" function effects MPGs? I think with auto stop/start engaged (turned on) we get a slight bump/increase in MPGs on the highway. Strange, but true. Why? I understand the effect in city driving with stop & go traffic, but why on the highway? I also understand the effect on a PDK car, but I'm talking a manual trans, here. Thoughts? Maybe I need to re-read the Manual, because a vaguely remember something.
Does anyone with 7MT think the "auto stop/start" function effects MPGs? I think with auto stop/start engaged (turned on) we get a slight bump/increase in MPGs on the highway. Strange, but true. Why? I understand the effect in city driving with stop & go traffic, but why on the highway? I also understand the effect on a PDK car, but I'm talking a manual trans, here. Thoughts? Maybe I need to re-read the Manual, because a vaguely remember something.
05-02-2017, 11:21 AM
#17
Banned
Join Date: Jan 2013
Location: Chicagoland Area
Posts: 26,142
Likes: 0
Received 5,388 Likes
on
2,509 Posts
Actually I think it does. I think you are onto something. This is what I vaguely remember. I need to read my Owner's Manual again.
05-02-2017, 11:48 AM
#18
Rennlist Member
Originally Posted by LexVan
Good time to ask this question, since it's been in my mind the past few road trips.
Does anyone with 7MT think the "auto stop/start" function effects MPGs? I think with auto stop/start engaged (turned on) we get a slight bump/increase in MPGs on the highway. Strange, but true. Why? I understand the effect in city driving with stop & go traffic, but why on the highway? I also understand the effect on a PDK car, but I'm talking a manual trans, here. Thoughts? Maybe I need to re-read the Manual, because a vaguely remember something.
Does anyone with 7MT think the "auto stop/start" function effects MPGs? I think with auto stop/start engaged (turned on) we get a slight bump/increase in MPGs on the highway. Strange, but true. Why? I understand the effect in city driving with stop & go traffic, but why on the highway? I also understand the effect on a PDK car, but I'm talking a manual trans, here. Thoughts? Maybe I need to re-read the Manual, because a vaguely remember something.
05-02-2017, 11:50 AM
#19
Banned
Join Date: Jan 2013
Location: Chicagoland Area
Posts: 26,142
Likes: 0
Received 5,388 Likes
on
2,509 Posts
I really dislike the auto start-stop feature and disengage it routinely. It may be irrational, but I can't help but think that the small gain in gas savings is not worth the wear and tear to the ignition system downstream and I find the sound grating. Although I wish that it defaulted to OFF, I'm not in an uproar like others on this board.
05-02-2017, 01:02 PM
#20
Well I'm glad to see that I'm not in the minority when it comes to getting decent gas mileage in a car that for all intent and purpose is a sports car.
Who says you can't have it all
Who says you can't have it all
05-02-2017, 01:07 PM
#21
Rennlist Member
Originally Posted by LexVan
But once you turn it off on the 991.1 it stays off. Not true on the 991.2. You must have the .2??
05-02-2017, 11:50 PM
#22
Rennlist Member
I really dislike the auto start-stop feature and disengage it routinely. It may be irrational, but I can't help but think that the small gain in gas savings is not worth the wear and tear to the ignition system downstream and I find the sound grating. Although I wish that it defaulted to OFF, I'm not in an uproar like others on this board.
05-04-2017, 12:15 AM
#23
Rennlist Member
I really dislike the auto start-stop feature and disengage it routinely. It may be irrational, but I can't help but think that the small gain in gas savings is not worth the wear and tear to the ignition system downstream and I find the sound grating. Although I wish that it defaulted to OFF, I'm not in an uproar like others on this board.