Acceleration "Lag"?
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AudiWorld Member
Joined: Apr 2011
Posts: 531
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Acceleration "Lag"?
Hey everyone,
Picked up my Prestige last night and I'm very psyched, pics to come on another post shortly!
Have a quick question: On the ride home from the dealership I definitely noticed a slight lag when punching the gas. I did three test drives and remember quite vividly how there was zero lag or hesitation. I attributed this to the car being supercharged as opposed to turbo charged. Coming from a turbo charged Q5 I was happy with this difference, as the Q5's lag was considerable.
Is it possible that as the cars computer "learns" how I drive the lag will disappear? Has anyone else experienced this? I hate to be calling the dealership already.
Thanks!
Picked up my Prestige last night and I'm very psyched, pics to come on another post shortly!
Have a quick question: On the ride home from the dealership I definitely noticed a slight lag when punching the gas. I did three test drives and remember quite vividly how there was zero lag or hesitation. I attributed this to the car being supercharged as opposed to turbo charged. Coming from a turbo charged Q5 I was happy with this difference, as the Q5's lag was considerable.
Is it possible that as the cars computer "learns" how I drive the lag will disappear? Has anyone else experienced this? I hate to be calling the dealership already.
Thanks!
AudiWorld Member
Joined: Oct 2010
Posts: 339
Likes: 0
With drive-by-wire cars, some degree of "lag" has been considered normal, and it's rarely a turbo/supercharger induced lag. For example, the 2011 528i was criticized for "lag" by at least two long-term tests and it uses a naturally-aspirated engine that is lag-free in many other applications.
Especially in "D" mode, the car will try to smooth out your throttle changes for driving comfort, and for sudden throttle changes it might wait for you to "settle down" before the throttle is applied (to prevent double-downshifts)
If you have ADS, try putting your car into Dynamic... Otherwise, try the S gear position and see if the lag appears there.
And yes, over time the car does learn whether you are an aggressive driver or a conservative one, so the throttle response might be different.
Especially in "D" mode, the car will try to smooth out your throttle changes for driving comfort, and for sudden throttle changes it might wait for you to "settle down" before the throttle is applied (to prevent double-downshifts)
If you have ADS, try putting your car into Dynamic... Otherwise, try the S gear position and see if the lag appears there.
And yes, over time the car does learn whether you are an aggressive driver or a conservative one, so the throttle response might be different.
Thread Starter
AudiWorld Member
Joined: Apr 2011
Posts: 531
Likes: 0
With drive-by-wire cars, some degree of "lag" has been considered normal, and it's rarely a turbo/supercharger induced lag. For example, the 2011 528i was criticized for "lag" by at least two long-term tests and it uses a naturally-aspirated engine that is lag-free in many other applications.
Especially in "D" mode, the car will try to smooth out your throttle changes for driving comfort, and for sudden throttle changes it might wait for you to "settle down" before the throttle is applied (to prevent double-downshifts)
If you have ADS, try putting your car into Dynamic... Otherwise, try the S gear position and see if the lag appears there.
And yes, over time the car does learn whether you are an aggressive driver or a conservative one, so the throttle response might be different.
Especially in "D" mode, the car will try to smooth out your throttle changes for driving comfort, and for sudden throttle changes it might wait for you to "settle down" before the throttle is applied (to prevent double-downshifts)
If you have ADS, try putting your car into Dynamic... Otherwise, try the S gear position and see if the lag appears there.
And yes, over time the car does learn whether you are an aggressive driver or a conservative one, so the throttle response might be different.
I did put the car in Dynamic and switched between "D" and "S". In S mode I did notice a slight decrease in lag but it was definitely still there. Hopefully it's a computer learning curve thing.
Thanks again for the input.
AudiWorld Senior Member
Joined: Sep 2004
Posts: 788
Likes: 2
From: Philadelphia Area
If it was me, I would go back to the dealer and ask to do a few more test drives to make sure your A7 does not have a unique lag. My A7 does not and it would drive me crazy if the lag was there. I also always drive in S mode around town but go to D on highways to reduce revs.
I thought that the learning done by the ECU is for shifting points for gear changes and not so much the initial throttle lag....
I thought that the learning done by the ECU is for shifting points for gear changes and not so much the initial throttle lag....
AudiWorld Member
Joined: Dec 2011
Posts: 278
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From: Northern VA
With the A8, there is definitely ~1/2sec lag between the time I punch the accelerator and the push in the posterior. I think the drive by wire needs to be recalibrated. It makes changing lanes little tricky. I'll try the "Sports" mode to see if that makes it any better.
AudiWorld Senior Member
Joined: Aug 2011
Posts: 1,206
Likes: 47
From: Toronto, Canada
Hey everyone,
Picked up my Prestige last night and I'm very psyched, pics to come on another post shortly!
Have a quick question: On the ride home from the dealership I definitely noticed a slight lag when punching the gas. I did three test drives and remember quite vividly how there was zero lag or hesitation. I attributed this to the car being supercharged as opposed to turbo charged. Coming from a turbo charged Q5 I was happy with this difference, as the Q5's lag was considerable.
Is it possible that as the cars computer "learns" how I drive the lag will disappear? Has anyone else experienced this? I hate to be calling the dealership already.
Thanks!
Picked up my Prestige last night and I'm very psyched, pics to come on another post shortly!
Have a quick question: On the ride home from the dealership I definitely noticed a slight lag when punching the gas. I did three test drives and remember quite vividly how there was zero lag or hesitation. I attributed this to the car being supercharged as opposed to turbo charged. Coming from a turbo charged Q5 I was happy with this difference, as the Q5's lag was considerable.
Is it possible that as the cars computer "learns" how I drive the lag will disappear? Has anyone else experienced this? I hate to be calling the dealership already.
Thanks!
Thread Starter
AudiWorld Member
Joined: Apr 2011
Posts: 531
Likes: 0
Hmm, thanks for all the feedback. To be clear, the hesitation only happens when I punch the gas fairly hard, like when one first decides to do a quick pass on a two lane road. Definitely like a 1/2 second lag...even in Sport mode in Dynamic.
Appreciate the input so far everyone, thanks.
Appreciate the input so far everyone, thanks.
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AudiWorld Member
Joined: Dec 2011
Posts: 278
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From: Northern VA
Hmm, thanks for all the feedback. To be clear, the hesitation only happens when I punch the gas fairly hard, like when one first decides to do a quick pass on a two lane road. Definitely like a 1/2 second lag...even in Sport mode in Dynamic.
Appreciate the input so far everyone, thanks.
Appreciate the input so far everyone, thanks.
It seems like when you punch the accelerator, the transmission thinks for a little bit, then it will downshift and only then throttle engaged.
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AudiWorld Member
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From: New York, NY
Hmm, thanks for all the feedback. To be clear, the hesitation only happens when I punch the gas fairly hard, like when one first decides to do a quick pass on a two lane road. Definitely like a 1/2 second lag...even in Sport mode in Dynamic.
Appreciate the input so far everyone, thanks.
Appreciate the input so far everyone, thanks.
Super Moderator
Joined: Sep 2009
Posts: 9,250
Likes: 480
From: Boston MA
Trident, are you saying this lags occurs when moving from a standing start or something else?
I've got the 8spd auto in my A4 and the lag is bad 90% of the time. You'd almost think you were riding around with a student driver...it can be that "un-smooth".
There has been much written on this topic. A few dumped their cars and didn't elect to live with it. It's too bad, it kinda spoils an otherwise great car
