knox379

Talked to my service advisor this morning about the update. He said the transmission update is part of Quality Package Update 19J1. The transmission part is Criteria 2. Hope this helps.

Eric (Plug Guy)

Updated this and other issues.

https://www.audiworld.com/forums/sho...2#post24511492

HouTexAudi

My dealer told me the exact same thing when I had my '13 4.0 A8L, but the hesitation is almost non-existant in my '14 S8. This really does not relate to the '12 model with the 4.2 engine if, in fact, there is a TSB to fix it.

Barmats

Thanks very much. I will reference this when the car goes in for its 15k service.

showtime1k

Are these in models with turbo only?

Barmats

Yes. I had the 2012 4.2 non-turbo and had zero lag or hesitation issues.

I had the updates applied a couple of months ago, and while it's marginally better, I can tell you that the problem still remains. The dealer took it for a test drive and said everything was normal. I suppose it is normal if you're used to waiting a couple of seconds after pressing down on the throttle for something to actually happen. Frustrating, but I suppose there are worse things than this. I'm not holding out any hope that this can ever be fixed.

The only other vehicle brand I've experienced this in was BMW (335i and X6), and it was easily resolved and completely eliminated by a software update.

showtime1k

That's not part of the turbo? I've had turbos before that would lag. It would take a sec for the turbo to get up to speed. A super chargers powered, wouldn't have that problem.

Barmats

No, this is not turbo lag. It is throttle lag right off the line from a dead stop. Zero response when the gas pedal is depressed. With turbo lag you would still have normally aspirated engine response before boost but this is not at all what's happening here.

derfA8L

Just as a reference point---I took a 2014 A8L 4.0T out for a test drive a couple of weeks ago, and there was absolutely no lag in throttle response...Accelerator pedal response was immediate at all the various speeds I tried it (since I was looking for any lag from turbos and/or throttle input). I was surprised at how immediate the engine/transmission response was to any input I gave the car.

jakematic

Thanks for the information - will likely go for a test drive myself soon.
This is precisely why I avoided the first MY of the new engine.