I have a 2019 C63s and have a question about the transmission overall.

I have about ~2k miles on the car now and as I've been driving it I've noticed that in stop/go situations or slow traffic situations that in comfort mode the car tends to buck and jerk when switching in the lower gears. It makes it a bit nauseating to drive in traffic and it seems to have gotten worse after putting more miles on the car (or I'm just noticing it more). Its really pronounced when I slow down to a stop and when I start moving again from a stop.

I know the car adapts to my driving but I'm not sure what I may be doing that's causing the car to modify its transmission settings.

I know this is a wet clutch and sports transmission but I'm not sure if this is normal behavior, anyone else with a 2019 and the newer transmission can chime in?

 

This topic has been discussed before. There's a whole thread about it. Being a clutch instead of a torque converter, there will always be a level of jerkiness to the drivetrain at lower speeds and you'll have to learn to properly modulate the throttle, especially in a car that has this much low end torque. It's very reminiscent of a traditional manual transmission where the clutch engagements are not always perfect depending on the situation. I'm at ~6500 miles, most of which I've driven in Europe during my European Delivery trip. I've just taken my second delivery of the car last week as it finally arrived at my US dealership. There can be some "bucking" at low speeds, but maybe it's just placebo, but I feel my car drives a bit smoother now than it did in Europe. I know they had to reprogram the ECU at the VPC for US fuel octane levels, but there might have been a transmission update applied, too. Or maybe my muscle memory has fully learned how the car behaves. Perhaps worth checking with your dealership to see if there's an update for your car.

As far as stop&go is concerned, I have the Driver Assist pkg, so I just let the car drive itself in traffic and it does a great job. It's not a 100% smooth, but that's the nature of the car. It isn't an S 560. I can highly recommend the Driver Assist pkg to anyone, especially someone who spends time in stop&go traffic. Also you can give the Slippery mode a try. It reduces the engine power/torque to make things even smoother than Comfort. I actually found myself in stop&go traffic this morning and the roads were wet, so I tried Slippery mode. Made it drive a bit smoother, but I don't really have any issues with Comfort. As I said, feeling the drivetrain work is part of the nature of this car. City and stop&go driving aren't its forte, but it has plenty of comfort to be a DD.

 

I have a 2019 C63S, which I drive in Comfort 50% of the time. When the engine and transmission have not warmed up sufficiently, I feel this jerkiness. After roughly 5 mins of running, this goes away drastically. You might also see it in Stop&Go based on how you modulate releasing the brakes and stepping on the gas. I feel that it is jerky when you're not giving sufficient gas in Stop&Go situation (eg. at a traffic light). As superswiss described above, this being a wet clutch you're not going to get the smoothness of a torque converter.

If you have folks in the car other than yourself, they are going to feel it. I guess it's a tradeoff with a sportier car, I personally don't mind and my wife doesn't either

 

Any update on the C350e jerky box.? Mine started last week and dealer Star isn’t showing anything.....

many thanks

 

I've not felt anything of note, I'll give it more attention, but it's always shifted pretty good in all situations.

My GTR, now that was clunky..

 

I was just noticing today that mine (at ~900 miles in) is noticeably smoother in the lower gears that it was initially. But I strongly suspect that much of it stems from adjustments (improvements) to my technique.

I've gotten more of a feel for the car, and have started to use the accelerator as I would in my fully manual car. I think much of it comes down to feel, and knowing when to lay on the gas and when to lay off. At one point today, my timing was all wrong, and it became just as bucky as it was when I drove it off the lot. But that was just once, and it felt understandable that it was my error.

TL;DR: The transmission does begin to feel smoother, even if only because the driver becomes smoother.

 

I feel like based upon the previous thread superswiss had with me, it's important to point out to that if you get the driver assist pkg, make sure to also get navigation... Don't be like uncle Stunna and miss out on key features