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Pull away speed.

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by Mark071973, Jul 9, 2019.

  1. Mark071973

    Mark071973 New Member

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    Your Mercedes:
    C250 CDI 2010
    Anyone with an automatic 722.6 transmission?

    I'm curious to know when you select first gear on a flat surface and release the brake so that the car starts to pull away how fast does your car go in mph without any gas pedal acceleration? Mine gets to 8mph. It seems to pull away quickly and I'm wondering if this is the norm or is there too much drive coming from the transmission?

    My vehicle is a 2010 C250 CDI with the 5 speed 722.6 auto transmission.

    Any thoughts on th

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  2. umblecumbuz

    umblecumbuz Senior Member

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    Your Mercedes:
    S204 and CLC 204 cdi, other non-Merc machines
    Sounds about right to me.
    Mine sometimes creeps slowly, and at other times moves a little quicker. Depends a lot on temperature of the 'box, road inclination, tyres, brakes (bind a little on occasion) and engine tickover rate (which can also vary).
     
  3. KennyN

    KennyN Senior Member

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    It will depend on the idle speed of the engine , my CLS idled at 600 when warm and 800 until it was warm.

    IIRC the creep speed at 600 rpm was around 4 - 5 mph , at 800 rpm it would have been nearer 8 mph.

    Kenny
     
  4. Rappey69

    Rappey69 Senior Member

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    Your Mercedes:
    c220 w204 amg sport
    had a w203 5 speed and that would do 5mph in first and 10 in 2nd.
    Now have a w204 7 speed and same results, although the w204 sometimes pulls away in 2nd so its straight up to 10 mph.
     
  5. Craiglxviii

    Craiglxviii Senior Member

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    Your Mercedes:
    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    Sounds about right to me too. 5-8mph. It’s surprisingly quick.
     
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  6. bembo449

    bembo449 Senior Member

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    Your Mercedes:
    w221 320cdi , r170 23k , range rover vogue , insignia vxr , shitron dispatch
    im going to try this on my 3 auto's as im intrigued , I reckon the 170 will come out on top due to its obvious weight advantage :D
     
  7. thebiglad

    thebiglad Senior Member

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    Hi Mark, do you have the gearbox in S or C ? If it's in S, it will pull away in 1st gear, if it's in C it will pull away in 2nd. Bearing this in mind if you are in 2nd you will have a higher road speed on tickover.
     
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  8. oigle

    oigle Senior Member

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    Your Mercedes:
    Currently 2003 ML270. 2012 Nissan Maxima 250SL.
    My ML270 with a 5 speed has developed an issue with pulling too hard at idle. Something to do with a solenoid, I am told. Will get it looked at when I do my next auto fluid and filter change. Meantime, the engine labours a bit more than it should to maintain a 750 idle speed and I def have to keep the foot on the brake.
     
  9. OP
    Mark071973

    Mark071973 New Member

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    Yes in C. I'll try in S and see if there is any difference.

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  10. LostKiwi

    LostKiwi Senior Member

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    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    My 129 starts in second and will idle at 600rpm which equates to 7 or 8 mph.
    The slightest incline and will just sit there.
    It's not a 722.6 (it's a 722.4) but yours sounds pretty normal to me.
     

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