TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

Motor efficiency - break in?

Discussion in 'Model S: Driving Dynamics' started by pairtrader, Jun 11, 2014.

  1. pairtrader

    pairtrader Member

    Joined:
    Jan 26, 2014
    Messages:
    204
    Location:
    Vancouver
    After a few thousand km on my Model S, it seems that my range has improved a bit. I have no data or expertise to back this up, but it really seems as though my efficiency has improved. My kWh/km continues to slowly trend down. Is there any chance that the motor has been broken in a bit and increased it's efficiency, or perhaps the gains are all from more efficient driving and slower speeds. Any input?
     
  2. David99

    David99 Active Member

    Joined:
    Jan 31, 2014
    Messages:
    2,048
    Location:
    Brea, Orange County
    I never heard of a break in time for electric motors. The design doesn't suggest that either.
    Maybe it's increasing temperatures? A less wet road can make a noticeable difference. Maybe you are getting more used to the car. I remember it took me a while to get used to driving with regenerative braking.
     
  3. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

    Joined:
    Mar 8, 2012
    Messages:
    12,752
    Location:
    Texas
    There is no break-in for an electric motor. There may be break-in for the reduction gears, though I doubt it. More likely it's weather related.
     
  4. djp

    djp Roadster 2.0 VIN939

    Joined:
    Aug 28, 2011
    Messages:
    1,108
    Location:
    Toronto, Canada
    Agreed, warmer air is less dense and rain will also hurt range. You'll see better numbers in summer than winter.
     
  5. pairtrader

    pairtrader Member

    Joined:
    Jan 26, 2014
    Messages:
    204
    Location:
    Vancouver
    Thanks. This is my first season change with my S85 and it bodes well for my summer road trips.
     
  6. darthvdr

    darthvdr Member

    Joined:
    Jul 13, 2013
    Messages:
    310
    Location:
    los gatos, ca
    I asked the same question when we first took delivery and DS told us we can drive our P85+ hard immediately.
     
  7. Brass Guy

    Brass Guy Member

    Joined:
    Jan 5, 2014
    Messages:
    505
    Location:
    Stoughton, MA
    Either the weather, or your demo thrill rides are diminishing as you've shown it off to all your friends by now.
     
  8. Alipapa

    Alipapa Member

    Joined:
    Jan 22, 2013
    Messages:
    230
    Location:
    Hong Kong
    Is there any oil or grease in the reduction gearing?
     
  9. drees

    drees Active Member

    Joined:
    Jun 23, 2009
    Messages:
    1,121
    Location:
    San Diego
    Tires will break in over the course of a couple thousand miles, and the rolling resistance will go down.
     
  10. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

    Joined:
    Mar 8, 2012
    Messages:
    12,752
    Location:
    Texas
    Yes, there is lubricant.
     

Share This Page