Took my '17 RLX SHawd in for service and got a '18 TLX loaner. I also have a '15 TLX Adv model. For the '18 there is an improvement in the transmission even though it is the same ZF9. I tried to duplicate the "right-turn-acceleration-lag" others have reported but could not duplicate. This car accelerated well enough to cause tires to loudly screech while turning and felt a little bit of tail slide. I like the way the TLX felt compared to my '15.

 

Good, quick comparison. Unfortunately, I'm at just over 10k miles in my 2018 and I definitely have the right turn acceleration lag; it apparentlytakes time to appear. What a pain in the ass as the 2018 is otherwise a completely enjoyable ride.

 

^^^ In that other thread, I stated I rarely felt the right-turn sluggishness anymore in my 2015... of course whenever I say "it doesn't happen (anymore)" or it rarely happens, it happens. It just happened to me on the drive home. This was like a complete shutdown of the engine (the feeling -- the engine didn't shut down) and then got acceleration back after about a second. First reaction out of me was "whoa".

 

 

I've adjusted to it. As I've stated before, I take my foot off the accelerator for just a microsecond and it seems to resolve the issue, or I tap out a quick downshift with the paddles. Still a pain.

 

^ one of the design aspects of the paddle shifters, N-Bob, being able to downshift by choice. I am truly enjoying the '18 loaner and suggesting to the wife to trade in her '15 towards one.

 

So here is my theory on the lag you guys are talking about. I think what is happening is that the ECU learns how you drive and adjusts accordingly. I bet if you guys experiencing the lag go and disconnect and reconnect your batteries you'll find the lag is temporarily gone until the ECU learns your driving style again. I'd be interested to hear the results if any of you try this. I also think it's part of the reason why most people who are test driving new cars don't feel it. My 2 cents

 

You may be right; although to this version of the ZF, only!
My 2015 couldn't adapt if Einstein, programmed it
The new algorithms's seem to have fixed the problem
I wouldn't have leased the 2018/A-SPEC if the test drive, didn't convince me