dp61627

What are the differences between a dual clutch tranny vs the multi clutch in the C63? Just wondering out of curiosity.

GordonGEICO

Here's a very good explanation of the MCT:

https://www.autoevolution.com/news/m...ms-112461.html

You can see from there is really not much like a dual-clutch. The biggest difference is the number of input shafts: one for the MCT; two for the dual-clutch.

J.M.G.

The MCT is a standard 7g-Tronic / 9g-Tronic from Mercedes. A normal Automatic-Transmission. However, it uses a ZF wet clutch to connect this transmission to the engine (instead of a conventional torque converter).

Therefore it offers all pros of a conventional automatic transmission (except comfort!), like: weight, torque-limits, ability to skip gears and so on AND it is as direct as a DCT due to the wet clutch, that directly connects the engine to the drivetrain when closed.

In the end the MCT offers all pros of an DCT EXCEPT the reaction time in manual mode, as shift pressure has to build up before the shift can be executed. So in automatic mode, this transmission is pretty much state of the art (except comfort, where a torque converter is still better), in manual mode it is fast but not as fast as a good DCT (which has other disadvantages like weight, torque limits, shift times other than +/- 1 gear).

MFahrer

I like that the DCT in my M3 basically acts as a manual. If you're at a complete stop and you take your foot off the brake, the car doesn't creep forward without putting your foot on the gas like most other automatic transmissions, MCT included. DCT, (and PDK) basically act like it's in neutral. I'll miss this if I move from DCT to the MCT in the AMG c63 S.

GordonGEICO

I'm not sure which PDK you are referring to but the PDK in my '14 Cayman S definitely creeps. It CAN feel like a manual sometimes, as it will roll back slightly on a hill on start, but it will creep forward on level ground. The PDK in the regular 911 (non-GT3 PDK-S) is the same. PDK in the Macan feels like a torque converter (although I know it's just the way it's programmed). I think the GT3 is the only one that doesn't creep, and it also has a different "paddle neutral" behavior where you can "pop" the clutches by holding then releasing the paddles.

URG8RB8

I thought this, too, when I moved from an M5 DCT to the C63S MCT. However, at a stop, press the brake pedal down to activate the Hold feature. You can then let go of the brake pedal.

Souriall91

I don't know about you guys but the only thing that feels like a manual is a manual. I've never bought an automatic car because I like that it feels like a manual car. I just get a manual because they're nothing alike.

URG8RB8

Agree 100%. However, manual transmissions (the good three-pedal type) are becoming increasingly more difficult to get, with most manufacturers no longer producing them. It's the reason I went with an E90 M3 over the W204 C63, the first time I cross-shopped the two.