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Acceleration numbers on MX Raven Long Range...

Discussion in 'Model X: Driving Dynamics' started by ellisina4, Sep 28, 2019.

  1. ellisina4

    ellisina4 Member

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    Hello,

    Just returned my wife’s leased MX P90D, no ludicrous. She got a great lease deal on new MX Long Range.

    Tested it with Dragy at both 80miles and 260 miles charge left … I keep getting the same 5.2 to 5.3 0-60 (Tesla states 4.4). There is no Launch control, getting "both pedals pressed" error. Attaching Dragy results...

    On her previous MX I was consistently getting close to 3.8-3.9 (Tesla advertises 3.8)

    Any suggestions on why MX long range 0-60 are a lot slower than Tesla advertises? Could it be that I am not doing something correctly?

    Thank you
     

    Attached Files:

  2. ellisina4

    ellisina4 Member

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    #2 ellisina4, Sep 29, 2019
    Last edited: Sep 29, 2019
    Here are some addition thoughts...

    Just to confirm, wife's car is not a Performance variant, it is just MX Long Range.

    I tested the car with suspension in Low setting...

    I understand that drivers who really care about the acceleration numbers would typically get a performance variant of MX, but 0.8 of a sec is a huge difference. Does Tesla advertise their 0-60 specs using 1ft rollout? If that the case, the delta will drop from 0.8sec to 0.6sec.

    I may be wrong, but for ICE cars, DA (density altitude) will make the most difference, aside from the driver’s skill… for Tesla, SOC and warmed up battery are the main variables.

    Could it be that Tesla releases 0-60 numbers for 20” wheels and possibly 5 seater (we have 6 seater)? I checked that OEM 20” wheels & tire combo is 61/64lb (front/rear) and 22” is 73/78lb. This difference in weight is about 250lv vs 302lb… considering it is unsprung weight, 4x52=208lb or a little less than 4% of the MX weight. Considering wheel package weight difference, I have seen posts by Raven owners who got close to Tesla specs as far as 0-60 with 1ft rollout using larger wheels.
    Raven Model X 1/4 mile and 0-60?

    Is there a way to have instrument cluster display power output in Long Range car? Does anyone have expected numbers?

    I called Tesla and they told me to bring the car in. They obviously told me that they will not test acceleration but will look that the battery output numbers are within the spec…

    If these battery output numbers are within spec, then what?

    Thanks
     
  3. Scott Fairchild

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    My guess is the Ludicrous didn't download
    As mine didn't. Push them for it.

    Suspension must be in low to launch.

    I did 2.8 in the MX with Ludicrous.
    Took me three visits to get it downloaded correctly. If it is not, it will only show INSANE and INSANE +

    Must hold LUDICROUS + for 15 sec until it flashes and launch screen appears.

    How that helps.


     
  4. Scott Fairchild

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    Hope that helps
     
  5. Racerx22b

    Racerx22b @unplggdd on Instagram

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    Charge to 90% or higher and try it. At 260 miles you’re not even close.

    The best times come at 80% or above. The more charge the better.

    Wheel size shouldn’t affect you that much. I get 2.9secs 0-60 on my MXP100D at 90% charge w 22” rims.
     
  6. Racerx22b

    Racerx22b @unplggdd on Instagram

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    He has a long range MX. Not a performace model. It has no launch control.
     
  7. bhzmark

    bhzmark Active Member

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    Good to have the Dragy data. Make sure you are stomping hard and fast on the accel pedal the whole way through 0-60. And make sure you are at at least 90% charge. If times are still slow show Tesla and tell them car seemed very slow compared to other non-performance cars and you got Dragy to confirm and it was confirmed. Bring it in multiple times to different centers if necessary. Also try Teslalog to get power numbers.
     
  8. ewoodrick

    ewoodrick Well-Known Member

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    Don't you have hold? Just press the brake to engage and then slam the accelerator. No both pedals issue
     
  9. DDarrow

    DDarrow Member

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    I'm pretty certain that Tesla's stated figures do figure in a 1ft rollout. So there is part of the discrepancy.

    Also it sounds as though you were trying to do a two pedal launch. This is likely to slow you down significantly. On the non performance vehicles you will get the "both pedels pressed" warning, and then the car will take off rather gradually when the brake is released. Your best time in a non performance model is going to be achieved by just coming to a complete stop, and slamming the accelerator down. Don't two-foot it.

    Hope this helps.
     
  10. Racerx22b

    Racerx22b @unplggdd on Instagram

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    You need to go to another page to get the time factoring in the 1st rollout on the dragy device. I’m 3.2 0-60 without the rollout but 2.9 with the rollout factored in on Dragy.
     
  11. ellisina4

    ellisina4 Member

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    Thank you, all, for your replies...

    - I knew that SOC has an effect on acceleration... since I did not see a difference between 25% and 80% ... I did not bother going to 90% plus

    - I did try launch control a few times and quickly realized that it is not available on this non-performance version

    I will try tonight to charge it to 100% and will make sure I slam and hold the acceleration pedal all the way (at least I thought I did before)... will report tomorrow.

    Thank you all, again.
     
  12. Racerx22b

    Racerx22b @unplggdd on Instagram

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    Here is my 0-60 time from Dragy Screenshot 2019-09-30 at 12.16.00 PM.jpeg
     
    • Informative x 2
  13. ellisina4

    ellisina4 Member

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    - I charged the car to almost 100%
    - drove around 15-20min
    - charge went down to bout 95% and battery should have been warmed up
    - came to a complete stop and pressed the brake to Hold position
    - stumped hard and fast on accel pedal all the way
    - performed four (4) 0-60 runs back to back
    - the best time with 1ft rollout was about 5.1sec - see attached dragy results (this is definitely slower than Tesla advertised of 4.4)

    Strangest thing is that it is the same acceleration times as at battery SOC of 80% and 25% (performed these runs a few days back)

    I think I used up all suggestions that I received here...

    What do you guys think? Is my next step to make a service appointment and tell them my car seemed very slow compared to other non-performance cars .. and have Tesla service check battery output?

    Thanks you all, again.
     
  14. ellisina4

    ellisina4 Member

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    Here is the dragy screenshot
     

    Attached Files:

  15. ellisina4

    ellisina4 Member

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    Ok, I figured it out... I have been testing the car with suspension in low setting. As soon as I dropped the car to Extra Low, 0-60 dropped by 0.6 sec... now with 1ft rollout, it is 4.45sec.
    I have heard people taking about suspension being in low or extra low, but could not even imagine this will cause such a difference.

    Attached is the dragy...

    thank you all for your help...
     

    Attached Files:

    • Helpful x 3
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  16. Racerx22b

    Racerx22b @unplggdd on Instagram

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    I respect the commitment to getting the advertised time. Why buy it if you don't at least try it out? Mad respect.
     
    • Like x 3
  17. ellisina4

    ellisina4 Member

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    Coming from the fastest MX in the world, this is a real complement ;)
    Thank you, brother.
     
  18. User01

    User01 Member

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    Is this a known issue across all Model X Long Range Ravens? I feel like it is kind of a big deal to not get your vehicles full acceleration unless you manually put it into very low every time you get in the car.

    This reminds me of having to put an ICE car into sport mode every time you get in.

    I have a 2018 Model X 100D. I'm considering buying a second Model X and making us an all EV household. It would be kind of pathetic if the new MX slower by default than my 100D.

    Does anyone know if the Raven Model X Performance requires you to put it in very low suspension or otherwise restricts the 0 to 60 to 5 seconds?
     
  19. Scott Fairchild

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    I do know that you have to put it in low suspension mode to LAUNCH. But NO. Not restricted. I ran a 11.8 quarter mile (2.86 0-60) without suspension in low and without launch mode at Palm Beach International.



    upload_2019-10-4_18-40-31.png
     
    • Informative x 2
  20. User01

    User01 Member

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    The Fast Lane Car YouTube channel just posted a video about their slow 5.5 second 0-60 Model X Long Range Raven. Exactly the issue OP was having.



    Tesla should let people know about this. Car reviewers are just going to show the car doesn't perform to spec.

    Just to be clear you have to be in the very lowest setting to get 4.4s 0-60? Not LOW but only VERY LOW?

    Hopefully someone tells them and they make a new video.
     

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