s4r

I just got a 2021 GT4 with PDK transmission. I have had a 2017 991.2 GTS also with PDK since it was new. The 991.2 transmission acted like a normal auto when not driving. The transmission always felt "engaged" in D and R. Take your foot off the brake in D and it might creep forward a little bit. On the GT4 trans, it seems more like a normal clutch type. When at a standstill, there is no movement forward and it seems to need a brisk step on the gas to get moving. Not really a problem - just different from the 911.

Those of you with PDK - how "engaged is the trans? On a slight incline, with it in D, will it roll backward?

Avera

What you describe for your GT4 is normal in my experience, including rolling backwards PDK manual mode. PDK automatic mode also requires a little throttle to get it going (more than a typical automatic transmission), but I do not believe it rolls backwards as in manual mode?

Avera

Xxyion

I could be wrong, but i have heard (somewhere) that the PDK is tuned differently in the GT models vs the GTS models. Its possible maybe that is the difference you are feeling?

Avera

I do not THINK so.

My 718 GTS PDK had the same characteristics, as did my F87C DCT . . . I think it is a characteristic of dual clutch transmissions.

That said, I have no idea why OP's 911 does not have this character?

Avera

PaulE

GT4 PDK is definitely in neutral when you stop in drive or reverse. That is different from my wife's Macan where the PDK is tuned like an automatic, it will creep in drive or reverse. Took me a bit to get used to it, in the beginning I was afraid to creep a little bit more forward when pulling into the garage to park, but it really works well once you're used to i, a very slight push on the gas and it moves nice and slow so I can pull all the way into the garage and not hit my workbench.

enduro

Clutch is disengaged, but not in neutral. But ya, the car rolls like a proper manual with its clutch disengaged. I really prefer the non-creep of the GT.

TXshaggy

Yeah, no.

The GT PDKs are programmed differently than non GT cars.

Most obvious is no creep. Less obvious are things like clutch kick.

ExMB

Wrong

1) Porsche vs BMW; apples and oranges
2) GT cars are not luxo barges (no matter how capable)

TRZ06

It will roll back on slight inclines or forward on slight declines in ALL modes.

I have also found that if you are aggressive with the throttle on a steep incline when the hold assist is engaged, it sticks briefly before it disengages and when it does disengage, it does so with a jerk motion. If you are light on the throttle, the hold assist transition is much smoother and cohesive.

In Porsche land, only the GT cars act like a tradition manual. All non GT PDK's creep and act like a traditional automatic.

PaulE

Thanks for clarifying, that's what I meant!

Avera

Is that true in PDK manual mode vs automatic mode?

My 718 GTS did not creep in manual mode and rolled backwards in manual mode on inclines.

Perhaps I am mixing apples and oranges in regard to OPs question?

Avera

Avera

Wow, wow, wow

I was not making blanket comparisons of BMW to Porsche

I was not even comparing PDK to DCT - although both are highly regarded and capable dual clutch transmissions

What I was stating is that both PDK and DCT have similar behaviors with respect to the questions posed by OP

Avera

TRZ06

You just learn to ignore this guy. He is the abrasive type that you just tolerate and ignore. Every car enthusiast forum has that one guy...

dnimi123

No creep on flat, but a bit of "Hill Hold" on incline...

Zhao

He may attack randomly and often, but there is also often good info attached. I think he's the buckleys cough syrup of forums