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    • Stock dual clutch E92 M3 takes on a stock E92 6-speed M3

      This is a debate that ranges all the time on the forums. What is faster, DCT or manual? Well, the dual clutch simply does shift faster and we see time and time again that the manual can not match it. This is a constant on every platform with a dual clutch and manual option (Porsche PDK versus manual direct comparison was posted earlier this year). The more shifts involved the bigger the advantage a dual clutch will have.

      On the M3 the DCT is geared much tighter in 1st, 2nd, and 3rd gears. The manual is geared better for the top end as it can stay in third longer (up to 113 miles per hour) than the dual clutch which has to shift to fourth much earlier. That is why you see the manual creep up in third gear in the video below but it still can not overcome the DCT shift speed advantage despite having lower drivetrain losses.




      This article was originally published in forum thread: DCT M3 VS 6 speed manual M3 started by LostMarine View original post
      Comments 121 Comments
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by KiokenM3 Click here to enlarge
        a 6 speed wil have the advantage the longer the race goes, but i gotta admit. the guy can drive!
        Exactly, you see in third gear the manual starts to regain.

        DCT and manual gearing is different. The manual can stay in gear in 3rd until 113 mph or so.

        They started in second gear and a fairly high speed looks like. Out of first it would be game over for the manual no contest.

        The guy in the 6 speed can drive.
      1. LostMarine's Avatar
        LostMarine -
        what gear do 6mt go to in the 1/4? and dct goes to 5th right, i think right on the top of 4th, maybe into 5th?
      1. Sticky's Avatar
        Sticky -
        This is a debate that ranges all the time on the forums. What is faster, DCT or manual? Well, the dual clutch simply does shift faster and we see time and time again that the manual can not match it. This is a constant on every platform with a dual clutch and manual option (Porsche PDK versus manual direct comparison was posted earlier this year). The more shifts involved the bigger the advantage a dual clutch will have.

        On the M3 the DCT is geared much tighter in 1st, 2nd, and 3rd gears. The manual is geared better for the top end as it can stay in third longer (up to 113 miles per hour) than the dual clutch which has to shift to fourth much earlier. That is why you see the manual creep up in third gear in the video below but it still can not overcome the DCT shift speed advantage despite having lower drivetrain losses.

      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        what gear do 6mt go to in the 1/4? and dct goes to 5th right, i think right on the top of 4th, maybe into 5th?
        6MT can finish in 3rd.

        DCT in 4th but not the top of it. This slows it down compared to the manual through the traps.
      1. LostMarine's Avatar
        LostMarine -
        I'm positive I'm in the top of 4th, hoping not to shift to 5th goin through the traps
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        I'm positive I'm in the top of 4th, hoping not to shift to 5th goin through the traps
        You can't be at the top of fourth because it goes to 124 miles per hour.
      1. LostMarine's Avatar
        LostMarine -
        Hymn. I'll have to test this out
      1. Eleventeen's Avatar
        Eleventeen -
        Not sure who would even debate this (at least if we are talking about a roll-on race). Launching may be a different story, but of course the DCT shifts faster. Hell, even the 6AT will shift faster than just about anyone can on a manual. I know a lot of people will dispute this, but I guarantee 99% of those who do, cannot outshift the 6AT. Unless you are running a dogbox and shifting clutchless, you are not shifting as fast as you think you are.
      1. sr20seb's Avatar
        sr20seb -
        One lesson we can learn from this is that the difference is quite small. I'll take the pleasure of shifting my own gears and giving my left leg a workout over the .0000000000000000000000000000000000000000000000000 000000000000000000000000000000001 second difference in speed.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by sr20seb Click here to enlarge
        One lesson we can learn from this is that the difference is quite small. I'll take the pleasure of shifting my own gears and giving my left leg a workout over the .0000000000000000000000000000000000000000000000000 000000000000000000000000000000001 second difference in speed.
        It's a bigger difference than you think
      1. sr20seb's Avatar
        sr20seb -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        It's a bigger difference than you think
        Completely and totally negligible compared to the joy a proper manual brings me.
      1. b00st's Avatar
        b00st -
        Click here to enlarge Originally Posted by sr20seb Click here to enlarge
        Completely and totally negligible compared to the joy a proper manual brings me.
        I totally agree with this. I've tossed around the idea of getting a car with a DCT in the past, but I can't get over how much I enjoy owning a manual most of the time. Maybe one day I'll jump on the DCT boat, but I can't do it yet. I don't think there's any arguing that the shift speed favors the DCT in any car, but if strictly speed was all that mattered instead of enjoyment, most of us are taking the hard way with BMW's anyways.
      1. LostMarine's Avatar
        LostMarine -
        Fwiw, I haven't used my dct in auto mode since day 2 having the car. Sure, not as involved as a true manual, but still very involved
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by sr20seb Click here to enlarge
        Completely and totally negligible compared to the joy a proper manual brings me.
        Winning races brings me more joy
      1. leo985i's Avatar
        leo985i -
        To each his own I guess, but nowadays a lot of people don't know how to drive MT, and it gives you(me at least) some sense of pride/joy to own a MT and knowing that not any random Joe/Grandma can drive your high powered car fast. Click here to enlarge just my 2 cents. I own a automatic car right now I regret not having a MT. My next car will definitely be MT. It sucks to say but sometimes I enjoy my wife's Scion TC with 180hp LMAO more than my 335i AT. The paddles just don't give you the same feeling you get when going thru the gears in a MT.
      1. onurleft's Avatar
        onurleft -
        And the E92 1/4 mile and trap speed record is held by a 6 speed car...
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by onurleft Click here to enlarge
        And the E92 1/4 mile and trap speed record is held by a 6 speed car...
        No its not
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by onurleft Click here to enlarge
        And the E92 1/4 mile and trap speed record is held by a 6 speed car...
        Since when?
      1. Sorena's Avatar
        Sorena -
        Click here to enlarge Originally Posted by sr20seb Click here to enlarge
        Completely and totally negligible compared to the joy a proper manual brings me.
        I'm with Seb. MT does suck in traffics but anywhere else it's pure joy.
      1. akh23456's Avatar
        akh23456 -
        Click here to enlarge Originally Posted by onurleft Click here to enlarge
        And the E92 1/4 mile and trap speed record is held by a 6 speed car...
        dct for all records .