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Energy Consumption Driving at Speed Limit

Discussion in 'Model S: Driving Dynamics' started by iKhalid, Apr 12, 2015.

  1. iKhalid

    iKhalid Member

    Joined:
    Feb 18, 2014
    Messages:
    630
    Location:
    Ajax, ON (for now)
    Hello,

    I almost forgot the efficiency when driving in a nice day temperature-wise. Finally, we got a really nice weather today (17°C /62F) and I was driving on the highway at 100km/h (62mph). As far as I remember from last year, driving at this speed should be around the rated line, but I noticed today driving for 20km that I was at 150Wh/km (242Wh/mile). That's a really low number.

    Did Tesla change anything in the past few months?

    I hope people from the south can comment on this.

    Thanks!
     
  2. lphe

    lphe Member

    Joined:
    Mar 18, 2015
    Messages:
    108
    Location:
    Eagan, MN
    Using Tesla range calculator at their web site, the estimated range of an 85D at 65 mph at 70 F is 295 miles. The maximum energy you can get from the battery is about 75 kWh. 75 / 295 = 0.254 kWh/mile. So you are getting the expected mileage for the car.
     
  3. loco

    loco Member

    Joined:
    Feb 21, 2013
    Messages:
    120
    Location:
    Poznan, Poland
    Driving downwind maybe?
     
  4. krisg81

    krisg81 Member

    Joined:
    Dec 18, 2014
    Messages:
    309
    Location:
    CA
    If the calculator isn't accounting for weight in vehicle, elevation changes, and wind - then that is complete BS. In my P85D yesterday I averaged 65MPH with no AC on, 72F and barely got 210 miles out of a full charge. P85D all options and 21' staggered wheels and Michelin PS2 tires.
     

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