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    2010 E 63 Transmission Questions.

    This is the first car I've owned with a auto/double clutch transmission.

    I've noticed even on Comfort mode at a stop it seems like the car sits in neutral even though in the "AMG" display it shows that the car is sitting in 2nd gear.
    Once I accelerate from a stop it feels like the transmission is "slipping" that it remains in neutral for that split second and then goes into gear and you can feel it in the back of your seat.

    Is this normal?


    Re: 2010 E 63 Transmission Questions.

    Don't know whether this could be a mechanical problem but it pretty much sounds/feels like the double clutch transmissions I have driven (Audi DSG and Porsche PDK). In stop & go they feel jerky compared to a good torque converter auto box (PDK more than the Aud system)


    --

    997 GT2 (GT3 RS on order), 987 Boxster S PDK, Audi S5, KTM Superduke 990


    Re: 2010 E 63 Transmission Questions.

    RR4:

    This is the first car I've owned with a auto/double clutch transmission.

    I've noticed even on Comfort mode at a stop it seems like the car sits in neutral even though in the "AMG" display it shows that the car is sitting in 2nd gear.
    Once I accelerate from a stop it feels like the transmission is "slipping" that it remains in neutral for that split second and then goes into gear and you can feel it in the back of your seat.

    Is this normal?


    Yes, since E63 is using so called multi clutch system. NOT classic torque converter.

    From E63 brochure:

    "

    The AMG SPEEDSHIFT MCT 7-speed sports transmission also makes a decisive contribution to fuel economy: a wet start-up clutch running in an oil bath replaces the previous torque converter. This unit responds extremely rapidly, dynamically and without the losses typical of a torque converter transmission thanks to its low rotational inertia. The transmission is equipped with four driving modes: "C" (Controlled Efficiency), "S" (Sport), "S+" (Sport plus) and "M" (Manual), which can be selected using a rotary electronic switch in the AMG DRIVE UNIT. Partial suppression of individual cylinders by interrupting ignition and injection during gearshifts under full load leads to considerably faster shift times. In M mode the AMG SPEEDSHIFT MCT 7-speed sports transmission allows gearshifts to be performed in 100 milliseconds.

    In the even more fuel-efficient driving mode Controlled Efficiency, the transmission shifts the gears decidedly smoothly, and the transmission control unit is programmed to perform early upshifts to keep engine speeds as low as possible. At the same time the AMG SPEEDSHIFT MCT 7-speed sports transmission meets the most demanding requirements where driving dynamics are concerned: fast and precise multiple downshifts ensure first-class agility in conjunction with the automatic throttle-blipping and RACE START function: this enables the Mercedes-Benz E63 AMG driver to call on the maximum acceleration potential automatically.   "


    Re: 2010 E 63 Transmission Questions.

    My experiences with VW's DSG echo what has already been said about DCT transmissions vs traditional autboxes: what you gain in directness, ecnonomy and shift speed, you lose in overall smoothness and low-speed jerkiness.

    Though it has to be said that the AMG MCT is not a true DCT, still, if it is jerky at low speeds then that is the inherent downside to such automated/sequential transmissions.


    Re: 2010 E 63 Transmission Questions.

    Bilal:

    My experiences with VW's DSG echo what has already been said about DCT transmissions vs traditional autboxes: what you gain in directness, ecnonomy and shift speed, you lose in overall smoothness and low-speed jerkiness.

    Though it has to be said that the AMG MCT is not a true DCT, still, if it is jerky at low speeds then that is the inherent downside to such automated/sequential transmissions.

    The PDK I've sampled in a Panamera 4S had no such issues.  In town I even forgot the car had more than one gear!

    The PDK in my Carrera S is sometimes jerky at low speed but nothing to upset the car's progress or reduce my enjoyment.

    IMO some people are nitpicking!


    --
    It's not where you're going, it's how you get there that counts

    Re: 2010 E 63 Transmission Questions.

    I guess it's a case of niggles that may be viewed as minor to some (in light of DCT benefits) or irksome to others given that they may have been expecting a lot more smoothness in daily usage.

    In my particular case, I drive mostly like a grandma anyways, so 100% of the time I am looking for smoothness over shift speed ;)


     
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