Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > F10 / F11 (2011 - Current)

F10 / F11 (2011 - Current)
The new chapter in the highly successful story of the BMW 5 Series Sedan (F10) and wagon (F11)

Reply
 
Thread Tools Display Modes
  #1  
Old 03-13-2014, 08:58 AM
Crusher137 Crusher137 is offline
Registered User
Location: Jersey Shore
 
Join Date: Feb 2014
Posts: 46
Mein Auto: 2014 535xi, 2006 330ci
ASS..Has anyone done a comparison?

I searched but didn't find where someone did a comparison to using the ASS (auto start/stop) and then comparing the MPG with not using the ASS. If it has been done here would you please provide a link to it? I couldn't find anything.
Reply With Quote
Ads by Google
  #2  
Old 03-13-2014, 11:50 AM
badblack550xi's Avatar
badblack550xi badblack550xi is offline
Chilling
Location: NJ
 
Join Date: May 2013
Posts: 918
Mein Auto: F10 2013 550i xdrive
Quote:
Originally Posted by Crusher137 View Post
I searched but didn't find where someone did a comparison to using the ASS (auto start/stop) and then comparing the MPG with not using the ASS. If it has been done here would you please provide a link to it? I couldn't find anything.
it's so small you wont even notice it
__________________
2013 F10 550ixdrive Carbon black metalic / BMS Stage 2 / AR Down Pipes/ 3" Custom Exhaust/ M5 mufflers and diffuser. WR 11.911 @118.06
Reply With Quote
  #3  
Old 03-13-2014, 12:18 PM
shogunman shogunman is online now
Shogunman
Location: Saratoga, CA
 
Join Date: Sep 2006
Posts: 484
Mein Auto: 2013 640i GC
Quote:
Originally Posted by badblack550xi View Post
it's so small you wont even notice it
Yes completely negligible imo. I have a 2013 640i which has ASS which I got my dealer to reconfigure so it remembers the last used setting (they call it an MSA Retrofit).

Sent from BimmerApp mobile app
__________________
Hypocrisy is to judge ourselves by our intentions while others by their actions.
Reply With Quote
  #4  
Old 03-13-2014, 06:42 PM
taint fair taint fair is offline
Registered User
Location: Colorado Springs
 
Join Date: Apr 2012
Posts: 95
Mein Auto: 2014 535xd
Don't forget ASS is not as much for fuel savings as keeping emissions down. It lowers the carbon footprint of the car.
__________________

2014 535xd M-Sport | Carbon Black | Ivory Nappa | Prem Pkg | Lighting Pkg | Cold Weather Pkg | Driver Ass Pkg | HK Sound | Multi-contour Seats | Sports Transmission |


2014 328xd Wagon M-Sport | Mineral Grey | Black Dakota | Prem Pkg | Lighting Pkg | Cold Weather Pkg | Driver Ass Pkg | Driver Ass Plus Pkg | HK Sound | Dynamic Handling Pkg | Tech Pkg | Anti-Theft Alarm |
Reply With Quote
  #5  
Old 03-13-2014, 08:08 PM
ErnestHouse's Avatar
ErnestHouse ErnestHouse is offline
Officially Welcomed to the 'Fest
Location: South Florida
 
Join Date: Dec 2012
Posts: 714
Mein Auto: 2014 535i GT M Sport
On my 2014, the Efficient Dynamics Display has an option that displays your realtime mileage with history. With it set to 8 minutes of history, the effect of ASS is easily observed. Using ASS for a stop light the mileage is over 35 and the next minute with a stoplight without ASS it's 15. How much it improves over a tank depends on your traffic. I turn it off when in the neighborhoods using stop signs and turn it on when I think I'll be at a light for more than 20 seconds. It helps MPG.
__________________
2014 535i GT M Sport Glacier, Mocha, ZDA, ZDB, ZDH, ZPP, 2VH, 416, 456, 4CK
Reply With Quote
  #6  
Old 03-13-2014, 09:36 PM
K-A's Avatar
K-A K-A is online now
Dark Knight
Location: U.S
 
Join Date: Nov 2010
Posts: 3,526
Mein Auto: '13 BMW 535i M Sport
Quote:
Originally Posted by taint fair View Post
Don't forget ASS is not as much for fuel savings as keeping emissions down. It lowers the carbon footprint of the car.
Your screen name though.
Reply With Quote
  #7  
Old 03-14-2014, 05:33 AM
silberma1 silberma1 is offline
Registered User
Location: Florida
 
Join Date: Feb 2014
Posts: 50
Mein Auto: 2012 535i
Quote:
Originally Posted by ErnestHouse View Post
On my 2014, the Efficient Dynamics Display has an option that displays your realtime mileage with history. With it set to 8 minutes of history, the effect of ASS is easily observed. Using ASS for a stop light the mileage is over 35 and the next minute with a stoplight without ASS it's 15. How much it improves over a tank depends on your traffic. I turn it off when in the neighborhoods using stop signs and turn it on when I think I'll be at a light for more than 20 seconds. It helps MPG.
I only use it in heavy traffic with many traffic lights. Otherwise in my opinion it is not worth the extra wear and tear on the battery and starting system
Reply With Quote
  #8  
Old 03-14-2014, 05:50 AM
Crusher137 Crusher137 is offline
Registered User
Location: Jersey Shore
 
Join Date: Feb 2014
Posts: 46
Mein Auto: 2014 535xi, 2006 330ci
I was hoping someone did a comparison by tank full. One tank of fuel using it and one tank of fuel not using it and compare the mpg. When China and other countries start worrying about the carbon foot print then so will I. In the mean time I'm only concerned with MPG.....
Reply With Quote
  #9  
Old 03-14-2014, 10:22 AM
ErnestHouse's Avatar
ErnestHouse ErnestHouse is offline
Officially Welcomed to the 'Fest
Location: South Florida
 
Join Date: Dec 2012
Posts: 714
Mein Auto: 2014 535i GT M Sport
Here's the effect on a long light. Basically tacking on the AVG for each minute (or similar period) stopped.
Attached Thumbnails
Click image for larger version

Name:	2014-03-14 09.26.06.jpg
Views:	31
Size:	80.6 KB
ID:	427968  
__________________
2014 535i GT M Sport Glacier, Mocha, ZDA, ZDB, ZDH, ZPP, 2VH, 416, 456, 4CK

Last edited by ErnestHouse; 03-14-2014 at 10:23 AM.
Reply With Quote
  #10  
Old 03-14-2014, 10:35 AM
Crusher137 Crusher137 is offline
Registered User
Location: Jersey Shore
 
Join Date: Feb 2014
Posts: 46
Mein Auto: 2014 535xi, 2006 330ci
Yes, but how does that transfer in savings of MPG per tank???
Reply With Quote
  #11  
Old 03-14-2014, 10:50 AM
K-A's Avatar
K-A K-A is online now
Dark Knight
Location: U.S
 
Join Date: Nov 2010
Posts: 3,526
Mein Auto: '13 BMW 535i M Sport
It DEFINITELY saves gas. I keep my Trip MPG on the right side of my iDrive screen, and when I sit at a light with ASS off I can see my MPG go down easily. Too many long lights and in just one drive around town I'll lose 1 or more MPG. Having ASS on avoids losing any MPG at a light.

The difference is certainly not negligible, especially in traffic congested areas. In wide open countrysides, sure it probably is relatively negligible.

It is crude in its implementation, the way it shudders when it stops and jolts when it starts is the only crude and unrefined aspect of the F10 experience really, and their improving upon it for the LCI gives the LCI a big leg up right there. However, I hope that they improved it greatly in refinement because sometimes it does get annoying in its crudeness and affects my mood about my cars drive when I have to keep feeling it interrupt the otherwise smooth experience.

Since I lease, therefore don't pay mind to long term wear or tear from it, I always keep it on. But if I was planning on keeping the car for a while, I'd probably put more attention into timing when I want it to kick in or when I don't (i.e when the car turns off/on for just a quick second, that's gotta be worse for the car than good, while being off for such a short time, not being able to save any gas or reduce enough pollutants as well).
__________________
'13 F10 BMW 535i Sport : Jet Black/Black-Anthracite : Premium & Technology Packages/Sport Auto Trans/Camera/Park Distance Control/Heated Seats/Tinted Windows/Blacked Out Markers/Performance Spoiler.

Ex M-B's: '11/'10/'06 E350's w/ AMG Sport Package, '02 S500 w/ Every Option.
Reply With Quote
  #12  
Old 03-14-2014, 02:08 PM
Crusher137 Crusher137 is offline
Registered User
Location: Jersey Shore
 
Join Date: Feb 2014
Posts: 46
Mein Auto: 2014 535xi, 2006 330ci
All good info. My 2014 seams fairly smooth in the stop start category. Not to annoying for me yet. Not sure about the earlier years as I haven't owned one. For now I will use it unless or until it becomes to annoying.
Reply With Quote
  #13  
Old 03-14-2014, 06:42 PM
ErnestHouse's Avatar
ErnestHouse ErnestHouse is offline
Officially Welcomed to the 'Fest
Location: South Florida
 
Join Date: Dec 2012
Posts: 714
Mein Auto: 2014 535i GT M Sport
Quote:
Originally Posted by Crusher137 View Post
Yes, but how does that transfer in savings of MPG per tank???

I estimate one mpg for my day to day driving. YMMV (pardon the pun).
__________________
2014 535i GT M Sport Glacier, Mocha, ZDA, ZDB, ZDH, ZPP, 2VH, 416, 456, 4CK

Last edited by ErnestHouse; 03-15-2014 at 05:11 AM.
Reply With Quote
  #14  
Old 03-15-2014, 08:37 AM
nineball nineball is offline
Registered User
Location: westlake
 
Join Date: Sep 2013
Posts: 35
Mein Auto: 535xi
i have a question related to this. when the car restarts does it actually use the starter again? i ask because i read a review of another car with a similar feature (maybe audi?) that claimed the computer knew which piston was going to move next and used that spark to sort of jump start the engine without using the starter. i have noticed that when the car starts normally the rpms go much higher than when the ASS restarts the car. anyone know?
Reply With Quote
  #15  
Old 03-15-2014, 11:13 AM
rfrysztak550iX rfrysztak550iX is offline
Registered User
Location: Naperville, IL
 
Join Date: Jan 2014
Posts: 40
Mein Auto: 2012 550iX
It is MB who uses the piston with the highest compression to restart the engine. Got this from the horse's mouth, as my loaner last week from MB had the new ASS system on it. As I stated in the other thread, it shudders when it stops (like a stall), but is almost imperceptible on restart. I wish it had a longer delay before it kicks in, because when you are creeping along in traffic, and stop for just a second or two, it shuts down. Lag time really needs to be a good 4 seconds, otherwise it is quite annoying. I might get used to it, but being a loaner, I had very little patience with it due to the "stall."

Bob
Reply With Quote
  #16  
Old 03-15-2014, 02:54 PM
beashonda beashonda is offline
Officially Welcomed to the 'Fest
Location: nj
 
Join Date: Feb 2008
Posts: 599
Mein Auto: 2014 535 x Drive
Quote:
Originally Posted by nineball View Post
i have a question related to this. when the car restarts does it actually use the starter again? i ask because i read a review of another car with a similar feature (maybe audi?) that claimed the computer knew which piston was going to move next and used that spark to sort of jump start the engine without using the starter. i have noticed that when the car starts normally the rpms go much higher than when the ASS restarts the car. anyone know?
The first time I used it months ago in my 2014 F 10 i heard the starter start, like i had pushed the start button. The only other time or two i turned it on, it was much more subtle.
Reply With Quote
  #17  
Old 03-15-2014, 04:38 PM
K-A's Avatar
K-A K-A is online now
Dark Knight
Location: U.S
 
Join Date: Nov 2010
Posts: 3,526
Mein Auto: '13 BMW 535i M Sport
It uses the starter, but it's definitely engineered differently than a regular startup. It starts much faster and there isn't any RPM "boost" when ASS starts the car. I remember hearing the difference explained, but can't remember the specifics. Basically it uses a method that's much less intrusive and demanding on the starter than a full on off-on transition.
__________________
'13 F10 BMW 535i Sport : Jet Black/Black-Anthracite : Premium & Technology Packages/Sport Auto Trans/Camera/Park Distance Control/Heated Seats/Tinted Windows/Blacked Out Markers/Performance Spoiler.

Ex M-B's: '11/'10/'06 E350's w/ AMG Sport Package, '02 S500 w/ Every Option.
Reply With Quote
  #18  
Old 03-15-2014, 07:28 PM
gsmith999 gsmith999 is offline
Officially Welcomed to the 'Fest
Location: Southern California, USA
 
Join Date: Oct 2011
Posts: 132
Mein Auto: 2012 535i
Quote:
Originally Posted by taint fair View Post
Don't forget ASS is not as much for fuel savings as keeping emissions down. It lowers the carbon footprint of the car.
I'm no scientist, but if the difference in mpg is negligible wouldn't the difference in carbon footprint also be negligible. Especially if you take into account the energy required to manufacture any parts that wear out sooner. I had my ASS reprogrammed by the dealer, and it makes driving the car so much more enjoyable. It was really the only complaint I had with this wonderful car.
__________________

2012 535i
Space Gray / Black Dakota / Anthracite
Premium - Premium Sound - Tech - Cameras - Active Cruise
Reply With Quote
  #19  
Old 03-15-2014, 08:11 PM
Fastpaddler Fastpaddler is offline
Fastpaddler
Location: Vancouver Island,Canada
 
Join Date: Sep 2013
Posts: 778
Mein Auto: 2011 BMW528i
Quote:
Originally Posted by gsmith999 View Post
I'm no scientist, but if the difference in mpg is negligible wouldn't the difference in carbon footprint also be negligible. Especially if you take into account the energy required to manufacture any parts that wear out sooner. I had my ASS reprogrammed by the dealer, and it makes driving the car so much more enjoyable. It was really the only complaint I had with this wonderful car.
+1 To me it is really a pain in the ASS(pun intended).
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > F10 / F11 (2011 - Current)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 07:21 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms