MCT vs DCT?
#2
Senior Member
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.
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.
Last edited by GordonGEICO; 05-30-2017 at 01:06 AM.
#3
Senior Member
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).
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).
#4
Newbie
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.
#5
Senior Member
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.
#6
Junior Member
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.
#7
Member
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.
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#8
Junior Member
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.