[Bill_P]

Originally Posted by kroogz

I do not experience lag in any mode.

Different countries must get different firmware?

I have also been keeping an eye on the location of those having problems and have noticed that most seem to be from North America.

I am still waiting for my 20i to be built so can not comment except that on my test drive of a 20d I did not notice any problem.

Am I right in thinking North America only get 28i versions and that they are not available elsewhere. I see mainly 25i in Australia and 20i in Europe (plus diesel versions in both)

[Meezen84]

Originally Posted by Bill_P

I have also been keeping an eye on the location of those having problems and have noticed that most seem to be from North America.

I am still waiting for my 20i to be built so can not comment except that on my test drive of a 20d I did not notice any problem.

Am I right in thinking North America only get 28i versions and that they are not available elsewhere. I see mainly 25i in Australia and 20i in Europe (plus diesel versions in both)

The 25i is the same engine as the 28i but they are just named differently
In greece petrol engines are x18i (3 cyl) 136hp, x20i 192hp, and x25i 231 hp
Diesel engines are the x16d 116hp , x18d 150hp, x20d 190hp and the x25d 231hp

[AMOR]

Which gearbox are you guys getting in Europe? Is it the same AISIN?
I assume that either gearbox firmware or ECU tune is not perfect, BMW should work on this issue to update.
I am also keeping and eye on BMS, they have JB4 ECU tune in development for B48 engine, I really hope it will eliminate the issue, as I hate the way car drives in D mode, the lag is both dangerous and annoying. Otherwise F48 is so good, this is the only problem so far.

[Dilbert2402]

Originally Posted by Bill_P

I have also been keeping an eye on the location of those having problems and have noticed that most seem to be from North America.

I am still waiting for my 20i to be built so can not comment except that on my test drive of a 20d I did not notice any problem.

Am I right in thinking North America only get 28i versions and that they are not available elsewhere. I see mainly 25i in Australia and 20i in Europe (plus diesel versions in both)

I too have wondered which countries and combinations of engine/gearbox are most affected. My 20D diesel auto is not just free of lag but as I begin to ease the pressure on the brake pedal the stop/start is disengaged and the car will start to creep forward. Once the throttle is pressed the car moves off with no hesitation.

[Douggie]

You guys feel any lag when you are cruising and then you suddenly floor the gas pedal? (for example, to overtake the car in front)

[Vogit]

Originally Posted by Douggie

You guys feel any lag when you are cruising and then you suddenly floor the gas pedal? (for example, to overtake the car in front)

Inevitably there is a lag if you press hard enough to kickdown, as the box goes down several gears (Possibly 4 or 5!): feels like an eternity, but certainly lot less time than it would take me to do it in a manual (Even if I missed out serval on the way)!

[The Beast]

Originally Posted by Douggie

You guys feel any lag when you are cruising and then you suddenly floor the gas pedal? (for example, to overtake the car in front)

You're better off knocking the gear-lever over into sport mode when doing this, the gearbox wil automatically shift down and respond better to accelerator input

[Bluezed]

Originally Posted by The Beast

You're better off knocking the gear-lever over into sport mode when doing this, the gearbox wil automatically shift down and respond better to accelerator input

Can't believe I hadn't tried this before. Up until today I had only tried manual sport mode, playing with gear lever and paddles. Leaving it in auto sport is just phenomenal. Thanks The Beast

[The Beast]

Originally Posted by Bluezed

Can't believe I hadn't tried this before. Up until today I had only tried manual sport mode, playing with gear lever and paddles. Leaving it in auto sport is just phenomenal. Thanks The Beast

No problem, although I have specified the SAT I actually prefer just shifting their gearbox over to sport as this is less frantic than trying to steer and use the paddles

[Douggie]

Originally Posted by The Beast

You're better off knocking the gear-lever over into sport mode when doing this, the gearbox wil automatically shift down and respond better to accelerator input

Yeah I know. But then we're driving an automatic, so there are always instances where I forget to do so, and it ends up a little scary when I expect (NEED!!!) it to downshift but it doesn't. The danger part is that it doesn't always have the lag (car seems to have a mind of its own), so I'm now very cautious about sudden acceleration and subconsciously anticipating surprises from the response

[AMOR]

Originally Posted by The Beast

You're better off knocking the gear-lever over into sport mode when doing this, the gearbox wil automatically shift down and respond better to accelerator input

Yes, that's the only way out now. I'm getting used to the fact that my "D" mode is down and to the left.
At least this way car drives like a BMW.

[The Beast]

Originally Posted by Douggie

Yeah I know. But then we're driving an automatic, so there are always instances where I forget to do so, and it ends up a little scary when I expect (NEED!!!) it to downshift but it doesn't. The danger part is that it doesn't always have the lag (car seems to have a mind of its own), so I'm now very cautious about sudden acceleration and subconsciously anticipating surprises from the response

Just be a little aggressive with it for a while, if it's anything like the ZF box in my F10 it should learn your driving style and adapt slightly...

[The Beast]

Originally Posted by AMOR

Yes, that's the only way out now. I'm getting used to the fact that my "D" mode is down and to the left.
At least this way car drives like a BMW.

[Douggie]

Originally Posted by The Beast

Just be a little aggressive with it for a while, if it's anything like the ZF box in my F10 it should learn your driving style and adapt slightly...

Yeah, that's what I'm doing right now. I have to blip the gas pedal on purpose a few times every day to "keep it alert" and see how it downshifts, just in case I need it later.

Just feel it's a joke that I have to constantly "train" my car to get it to listen to my right foot. Gosh, what do you think I frikin want when I floor the gas pedal? And what does how I normally drive have to do with what I want NOW, AT THIS VERY MOMENT???

Yes, switching to D mode is better, but then the high rpm holding is stupid for cruising.

[IBX1]

I'm getting the hang of switching the modes in certain routes in my area. It still feels fairly random in comfort mode. Today I had a weird surge (jerky down shift) during coasting while slowing down. I'm hoping this smooths out. Or at least that I learn how it behaves, and that it's consistent. The best I could describe the feel of this transmission so far is it that at random times it feels like my sister driving a manual. I do like the car though when it's performing as expected.

[AusF20/F48]

Having both the F20 125i with Sport auto box and The X1 25i with Sport auto box I have notice a definite difference between the ZF box and the Aisin in response time.
The F48 is much slower to engage and transfer the power at the get go. I realise that there is a slight weight difference between the two cars to overcome, but it is frustrating. Once up and going the F48 box works well. The Aisin box is not as dynamic as the ZF particularly when in the manual mode and does not engine brake as well. I do hope that BMW can address this soon and update the programming of the F48 auto box.

[DHS]

Originally Posted by AusF20/F48

Having both the F20 125i with Sport auto box and The X1 25i with Sport auto box I have notice a definite difference between the ZF box and the Aisin in response time.
The F48 is much slower to engage and transfer the power at the get go. I realise that there is a slight weight difference between the two cars to overcome, but it is frustrating. Once up and going the F48 box works well. The Aisin box is not as dynamic as the ZF particularly when in the manual mode and does not engine brake as well. I do hope that BMW can address this soon and update the programming of the F48 auto box.

Have a 435i and X1. The ZF is light years ahead of the Aisin. Make that thousands of light years ahead. The Aisin is like driving a 70s domestic automatic. Step on the accelerator and eventually something might happen. Worst part is it is unpredictable. Never know what response you will get. It seems like the transmission holds a committee meeting before doing anything.

[AusF20/F48]

I have been driving my X-Drive 25i (28i USA) around for the past few days with the Stop/Start turned off and in 'Sport' Mode.
Whilst it has improved the response, it is still much slower to engage and deliver the power when compared to the F20 125i.
I went back to the 'comfort' mode with stop/start and noticed that if you put your foot down from a standing start, the drivetrain generates a lot of vibration back through the body as it tries to put the power though to the wheels.

I hope that BMW will be able to update the software on the Gearbox/Engine management to improve the response time, power delivery and drivability.

Don't get me wrong, my X1 is a great vehicle to drive, but if I have to drive sedately so that it does not show it flaw in the power delivery, what's the point of having the 25i with 'Sport' mode if you cannot use it from the get go.

[ttimbo]

Not noticing this so far in my Aus delivered 25i. No, the Aisin g/b isn't as responsive as the ZF in my M135i, but it seems pretty sharp. Much better than the DSG in our Golf GTD!
I will keep an eye on this, given the many reports.

[davidkn]

Originally Posted by DHS

Have a 435i and X1. The ZF is light years ahead of the Aisin. Make that thousands of light years ahead. The Aisin is like driving a 70s domestic automatic. Step on the accelerator and eventually something might happen. Worst part is it is unpredictable. Never know what response you will get. It seems like the transmission holds a committee meeting before doing anything.

The same was true of my AMG gearbox in my previous car, I pulled a paddle, went and made a cup of tea and then it was ready to shift. So slow, and that was the AMG speed shift plus.

The Porsche PDK however is by far the best gearbox I've ever used, faster than anything else, no car I have will be as good as that going forward unless I stick with Porsche I don't think.

[PF1]

Just bringing this thread up again as there's been a new review by the Australian press criticising the "turbo lag". I don't remember reading a previous article with this complaint but it certainly sounds like what some owners have reported here.

I'm not so sure of it's turbo lag as such or gearbox lag or deliberate desensitivity programmed in to save fuel (in Comfort). I have noticed a slight delay in getting off the line when wanting to go quickly, but it's no worse than I've experienced in other 2.0L turbo petrol cars. Even a 125i I test drove (with the ZF) had a slight lag in Comfort mode, much improved in Sport mode.

http://www.motoring.com.au/bmw-x1-2016-review-102003/

[ttimbo]

I'm not noticing the issue after 2,000 km on my Jan 2016 build. Maybe something else BMW has rectified in-line