[Prudhvionline]

My 18 LCI DCT has around 800 miles on the odo and I feel jerks below 10mph. It rides completely fine after 1000rpm and above 20mph. it is felt mostly in stop and go traffic and very annoying sometimes. Is it normal?? or anything to worry about.

[MrKepan]

my 6MT jerks at below 10mph in first gear. I found that out when I was going over a train track. and the diff makes some hissing noise.
Brand new car.

[Prudhvionline]

Is that misfiring?

[Corinne]

I have this problem on my new 6MT. Going from 3rd to 2nd invariably results in a loud thunk if I'm slowing down. It's driving me bananas.

[MrKepan]

Originally Posted by Prudhvionline

Is that misfiring?

Not a misfire. that'll be bad. something to do with the diff I think. diff bushing might have a lot of play.

[blackholescion]

Originally Posted by Corinne

I have this problem on my new 6MT. Going from 3rd to 2nd invariably results in a loud thunk if I'm slowing down. It's driving me bananas.

It's counter-intuitive, but just dump the clutch. It will be perfectly smooth. IF you try to slip the clutch to ease it into gear, the revs will drop just as you're trying to slip it and it'll make noise. It took me a solid 1000 miles to unlearn manual driving behavior then a further 4000 to make it smooth 90% of the time. Ha. So weird!

[gmzanatta]

Originally Posted by blackholescion

It's counter-intuitive, but just dump the clutch. It will be perfectly smooth. IF you try to slip the clutch to ease it into gear, the revs will drop just as you're trying to slip it and it'll make noise. It took me a solid 1000 miles to unlearn manual driving behavior then a further 4000 to make it smooth 90% of the time. Ha. So weird!

Yep, this is correct. These cars are meant to be driven hard and they don't like slow clutch slips. Slam it hard and it'll be smooth - counterintuitive, I know, but hey, makes for some fun driving

EDIT: didn't notice OP had a DCT, was talking to the MT folks. For the OP, you're pretty much SOL, BMW DCT's are notorious for jerking around those conditions.

[Ktmdriver]

Originally Posted by Prudhvionline

My 18 LCI DCT has around 800 miles on the odo and I feel jerks below 10mph. It rides completely fine after 1000rpm and above 20mph. it is felt mostly in stop and go traffic and very annoying sometimes. Is it normal?? or anything to worry about.

What you are feeling is normal and nothing to worry about. The dct transmission is not going to feel as seamless as a conventional torque converter type transmission or cvt especially when coming to a stop or whilst driving in stop and go traffic and in full automatic mode.

In addition to that, my 2017 pre lci has about 4500 on it now and I notice a slight forward lurch just after a complete stop. The car then settles down and I can take my foot off the brake. The car has done it since I bought it new with just three miles on it.

Try not to inch forward in traffic as that can seem to exacerbate the jerky feeling as the clutches engage and disengage.

[chmura]

Jerking in first gear at low speeds is normal. Even my e90 M3 6MT did it.

You need to learn how to drive it. You want to avoid staying in 1st gear at very low speeds.

[No Boost]

Originally Posted by gmzanatta

Yep, this is correct. These cars are meant to be driven hard and they don't like slow clutch slips. Slam it hard and it'll be smooth - counterintuitive, I know, but hey, makes for some fun driving

EDIT: didn't notice OP had a DCT, was talking to the MT folks. For the OP, you're pretty much SOL, BMW DCT's are notorious for jerking around those conditions.

Yeppers...overall, MDCT is a great dual clutch. Unfortunately, slow speed/low rpm conditions will exhibit this condition. There is one way to rectify it. Trade your M2 in for a 6MT M2. Funnest car ever. Oops, I went off topic.

[atxsk8r]

Common problem with DCT. Go on the M3/ M4 forums and search, plenty of posts about this.

But i agree with Stage IV, trade it in and get MT

[Tag]

In traffic just put it in manual mode and in 2nd gear, problem solved.

[coralcaves]

yep completely normal...having never had a DCT I went for that myself...just run slow in 2nd gear and this isn't an issue. The DCT is amazing...but speeding tickets will come for sure.

[izzyM2]

I don't consider it as a problem but a trait. I like its rawness or as much rawness it can be as an automatic.

[OGM2]

Originally Posted by izzyM2

I don't consider it as a problem but a trait. I like its rawness or as much rawness it can be as an automatic.

Same here. I initially ordered my car in 6MT and test drove the DCT on decision day for 15 minutes and when it jerked like a MT in manual,mode in 1st gear I was like f-yeah. What do you lose vs MT when you can still shift in manual mode with the center console knob or paddles and take it to redline? A auto rev-matching clutch and the loss of the overdrive 7th gear, that's it. Decision made! Bring it on MT lovers, its all love lol.

[stefan]

In a manual the jerkiness is 100% driver error; practice more to fix.

For DCT I imagine the best thing to do would be put the car in comfort to give you more throttle modulation and just be gentle as hell.

[OGM2]

Originally Posted by stefan

In a manual the jerkiness is 100% driver error; practice more to fix.

For DCT I imagine the best thing to do would be put the car in comfort to give you more throttle modulation and just be gentle as hell.

That is true but in a conventional auto it modulates it for you. I just meant that it had similar characteristics as a manual which is why I changed my order last second after test driving DCT. Honestly, if it was a conventional AT I would've went with MT regardless of performance. I like MT's (I'm licensed to drive a MT tractor trailer, though that's not involving, it's a chore) and have owned 10 different sports cars with it, but I just loved the versatility of the DCT. I totally get why you chose MT though. We can all get along😬

[akkando]

I have 11.5k miles on mine and it's only consistently jerky in first in sport+ going fast up an incline. Under normal driving conditions if I am just deliberate with the throttle giving it some gas so it doesn't ride the clutch then shift to second around 2k it doesn't jerk like a 15 year old learning to drive stick. Pretty much never leave it in Drive/auto mode so not sure how often it would happen with car choosing when to shift.

[cookiesowns]

The car occasionally does some odd torque limiting in 1st and second which makes the car creep even when giving constant throttle it’s a bit annoying. As for the clutch issues I find this car one of the easiest manuals I’ve ever driven.

I am however the type of person that likes to prevent clutch slip whenever possible and I generally get her going without using a bit of gas. In this car I use just a bit to prevent the “creep” mode from going which modulates the throttle for you to prevent stalling. Which occasionally revs it to 1100 which I don’t like. I can usually get my cars going off idle.

[ORIGIN M.]

Originally Posted by coralcaves

yep completely normal...having never had a DCT I went for that myself...just run slow in 2nd gear and this isn't an issue. The DCT is amazing...but speeding tickets will come for sure.

A great Traffic Lawyer will give you miles of smiles !

[ZPrime]

In stop and go, don't "give it throttle" like normal. After a stop, just lightly tap the gas to put it into creep mode, and allow it to creep on its own instead. If you're trying to feed in throttle gradually like a manual car, it is slipping clutch to smooth that out, which you don't really want. You're better to just tap the gas and get it into creep mode, which AFAIK doesn't slip the clutch and gets it fully clamped and then just feeds absolute minimal throttle to keep it rolling.

[ORIGIN M.]

Originally Posted by ZPrime

In stop and go, don't "give it throttle" like normal. After a stop, just lightly tap the gas to put it into creep mode, and allow it to creep on its own instead. If you're trying to feed in throttle gradually like a manual car, it is slipping clutch to smooth that out, which you don't really want. You're better to just tap the gas and get it into creep mode, which AFAIK doesn't slip the clutch and gets it fully clamped and then just feeds absolute minimal throttle to keep it rolling.

Great tip.