S4 (B9 Platform) Discussion Discussion forum for the B9 Audi S4 produced from 2016-

S4 8-speed question

Thread Tools
 
Search this Thread
 
Old 03-25-2018, 10:25 AM
  #11  
AudiWorld Newcomer
Thread Starter
 
DGould04's Avatar
 
Join Date: Jan 2012
Location: NC
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks guys! All good info... I like the DSG in my current A3 (which will be replaced by the S4) and I like the 8-spd in our SQ5. While not a DSG, I am glad to hear it's the sport version in the new S4 as opposed to the sluggish 8-spd in our '15 A4 (which was replaced by the SQ5).
Old 03-25-2018, 03:31 PM
  #12  
AudiWorld Senior Member
 
farmerjones's Avatar
 
Join Date: Jan 2017
Location: Iowa
Posts: 1,174
Likes: 0
Received 152 Likes on 103 Posts
Default

Some of the DSG tuning must different between models, because for the life of me I can't understand the "jerky at low speeds" comments about the DSG. My TT's DSG could never be described as jerky or any other weird behavior at low speeds. It's as smooth as butter. I've had regular automatics 10x as jerky as my DSG. Some models must have poor tuning, the adaptive learning has issues, or the car's don't have updated software.

Too me it's just a crying shame all these high-performance Audi's no longer have launch control. Seems odd that the normal luxury-cars get the supposedly "jerky" transmission and the perfjoamcne models now get the smooth transmission. Suddenly Audi is concerned about transmission behavior, but only addresses the low-volume performance models? And why do the A6 and A7 have the DSG if the new 8 speed is better? A lot of conflicting statements floating around out there
Old 03-25-2018, 03:55 PM
  #13  
AudiWorld Member
 
will13k7's Avatar
 
Join Date: Nov 2011
Location: Bay Area, CA
Posts: 195
Likes: 0
Received 3 Likes on 3 Posts
Default

For the DSGs I've tried, it was jerky for the 2010-2012 S4s until they did a software update around 2013, then it was a night and day difference. 2013+ S4s smooth. 2015+ S3s smooth. 2017+ A4 DSGs are smooth too.

Last edited by will13k7; 03-25-2018 at 04:14 PM.
Old 03-25-2018, 03:56 PM
  #14  
AudiWorld Member
 
m332is's Avatar
 
Join Date: Feb 2018
Posts: 94
Likes: 0
Received 0 Likes on 0 Posts
Default

I also wondered why Audi is putting the ZF 8 speed in the S/RS cars and DSG in the A/Q cars as well. Is the DSG cheaper to manufacture? Must be some logical reason???
Old 03-25-2018, 04:25 PM
  #15  
AudiWorld Member
 
will13k7's Avatar
 
Join Date: Nov 2011
Location: Bay Area, CA
Posts: 195
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by SYMAWD
that is fast enough, great for a fun daily driver. DSG for comparison (jump to 1:27):

...from a launch (amax mode):
Old 04-01-2018, 02:27 PM
  #16  
AudiWorld Senior Member
 
Slides's Avatar
 
Join Date: Mar 2018
Location: New Jersey
Posts: 926
Received 62 Likes on 40 Posts
Default

Having driven both the B9 A5 and S5, I really enjoyed the DSG transmission on the A5. Quick shifts and very little jerkiness. The S5's ZF transmission is good too but does suffer from low speed hesitation and lag. Not sure if it's just a transmission issue though.

Around town, the A5 feels quicker because of this.

I assume the A4 and S4 will be similar.
Old 04-01-2018, 05:24 PM
  #17  
AudiWorld Super User
 
Glisse's Avatar
 
Join Date: Sep 2010
Location: Switzerland
Posts: 2,545
Received 491 Likes on 335 Posts
Default

Originally Posted by will13k7
For the DSGs I've tried, it was jerky for the 2010-2012 S4s until they did a software update around 2013, then it was a night and day difference. 2013+ S4s smooth. 2015+ S3s smooth. 2017+ A4 DSGs are smooth too.
These are all different transmissions. The B8 S4 uses a DL501 dual sequential transmission. The latest S3 uses a DQ381, previous version was a DQ250, and the A4 a DL382.

Certainly the B8 S4's DL501 was smoother after 2013. They increased the level and duration of torque cut. Both to make it smoother, and also to protect it from damage in markets where popular "tunes" ignored the very finite torque ceiling that a dual sequential transmission has. I preferred the more aggressive earlier software myself.

As to some other comments being made, the EA838 engine used in the new C8 A6 and A7 models is using a dual sequential transmission (no idea what it is) only in conjunction with a quattro Ultra drive train. C8 models using a quattro Torsen style self-locking centre differential and a high torque engine will use the ZF 8HP transmission. High torque @ low rpm engine + self-locking centre differential = torque converter is the new Audi formula for "acceptable" low speed behaviour. Change any of the first two attributes, then dual sequential can be used. And Porsche are also using the same formula as well - the new Cayenne uses a locking centre diff (electric), and uses a ZF8HP, not PDK.
Old 04-01-2018, 08:02 PM
  #18  
AudiWorld Super User
 
JohnEnglish's Avatar
 
Join Date: Mar 2012
Posts: 2,705
Received 589 Likes on 423 Posts
Default

Originally Posted by will13k7
For the DSGs I've tried, it was jerky for the 2010-2012 S4s until they did a software update around 2013, then it was a night and day difference. 2013+ S4s smooth. 2015+ S3s smooth. 2017+ A4 DSGs are smooth too.
My 2013 S4 can be jerky at low speeds.
Old 04-01-2018, 08:45 PM
  #19  
AudiWorld Senior Member
 
mplsbrian's Avatar
 
Join Date: May 2017
Location: Midwest US
Posts: 1,187
Received 79 Likes on 55 Posts
Default

Originally Posted by m332is
I also wondered why Audi is putting the ZF 8 speed in the S/RS cars and DSG in the A/Q cars as well. Is the DSG cheaper to manufacture? Must be some logical reason???
Everybody I asked back when I was buying mine told me it was because the DSG can't handle the torque. Don't know that I fully believe them on that one, but I heard this from 2 different dealerships.
Old 04-01-2018, 09:17 PM
  #20  
AudiWorld Super User
 
stanj's Avatar
 
Join Date: Mar 2000
Location: San Jose, CA
Posts: 2,534
Received 35 Likes on 21 Posts
Default

Originally Posted by mplsbrian
Everybody I asked back when I was buying mine told me it was because the DSG can't handle the torque. Don't know that I fully believe them on that one, but I heard this from 2 different dealerships.
And yet the DSG can handle the torque in the new A6/A7... strange.


Quick Reply: S4 8-speed question



All times are GMT -8. The time now is 02:03 PM.