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Poll: Model 3 Efficiency (Battery-to-Wheels)

Discussion in 'Model 3' started by jsmay311, May 14, 2018.

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What is your Model 3's lifetime average battery-to-wheels Wh/mile efficiency?

  1. 0-159 Wh/mile

    0 vote(s)
    0.0%
  2. 160-179

    0 vote(s)
    0.0%
  3. 180-199

    2 vote(s)
    1.1%
  4. 200-219

    12 vote(s)
    6.4%
  5. 220-239

    74 vote(s)
    39.6%
  6. 240-259

    57 vote(s)
    30.5%
  7. 260-279

    24 vote(s)
    12.8%
  8. 280-299

    11 vote(s)
    5.9%
  9. 300-319

    3 vote(s)
    1.6%
  10. 320-339

    0 vote(s)
    0.0%
  11. ≥340

    4 vote(s)
    2.1%
  1. jsmay311

    jsmay311 Member

    Joined:
    Apr 22, 2016
    Messages:
    793
    Location:
    Chicago suburbs
    If you’re a Model 3 owner, please let us know what kind of average battery-to-wheels efficiency you’re seeing. (“Battery-to-wheels” just means the Wh/mile number displayed on the trip meter.) If you've reset both trip meters and don't have a lifetime Wh/mile number to check, just give your best estimate based on what you've observed.

    Also, if you have a very high or very low efficiency number, please post a comment with any particular reasons you think you might have for being an outlier.

    Also^2, if you happen to measure the energy used from the wall/outlet/EVSE and can calculate your overall (wall-to-wheels) efficiency including charging losses, please post that number in a comment along with your battery-to-wheels number so we can get an idea for typical charging+vampire losses.

    Thanks!

    (I also posted an identical poll on the M3OC forum. Please only vote in one poll to avoid double-counting responses.)
     
    • Like x 1
  2. GregRF

    GregRF Squirrel Power

    Joined:
    Jul 22, 2014
    Messages:
    431
    Location:
    CA
    237 Wh/mile at 400 lifetime miles. Aero wheels.
     
  3. OnceAScottie

    OnceAScottie Member

    Joined:
    Mar 18, 2018
    Messages:
    17
    Location:
    CA
    230 Wh/mi at 3100 miles. Aero wheels. Moderate temps in SoCal

    All inclusive wall outlet consumption (in 10 weeks) per mile driven is 298Wh/mi. This would account for vampire draw, consumption when not moving (ie AC when stopped/parked), battery cooling/heating, and wiring/charging efficiency.
     
    • Informative x 2
  4. jsmay311

    jsmay311 Member

    Joined:
    Apr 22, 2016
    Messages:
    793
    Location:
    Chicago suburbs
    Yikes. 30% overhead. :(

    But, just to clarify... what types of on-board energy consumption are actually excluded from the trip meter?

    From what I've read, I'd agree vampire losses are not counted. And I think I also saw in a thread somewhere that pre-conditioning HVAC loads while the car is "off" aren't counted either.

    But surely battery conditioning and HVAC loads while the car is on -- moving or not -- are counted towards the kWh consumption figures on the trip meter, right???
     
  5. Extrion

    Extrion Member

    Joined:
    Mar 15, 2016
    Messages:
    38
    Location:
    Clifton Park, NY
    243Wh/mi with 372 miles driven.
     
  6. Boourns

    Boourns Active Member

    Joined:
    Mar 9, 2016
    Messages:
    1,517
    Location:
    Dallas
    MVIMG_20180517_132127.jpg
     
    • Like x 4
  7. jackbowers

    jackbowers Jack Bowers

    Joined:
    Aug 23, 2009
    Messages:
    220
    Glad to see a thread on this. I've been amazed by the Model 3's efficiency with 18" wheels and covers. Some of the 250+ mile trips I've done at 65 mph have significant elevation gains (such as San Jose to Reno and Boise to Winnemucca), and I'm still ending up 40-50 miles to spare. It would be interesting to see how far the car can go on a flat course at 65 mph on a windless day in the 70s - I'm guessing it's well over 350 miles.
     
  8. novox77

    novox77 1.21 Gigawatts

    Joined:
    Nov 25, 2017
    Messages:
    1,210
    Location:
    NH, MA
    I did a round trip from home to a neighboring town at noon today. 22 miles, 160kW/hr. No HVAC, ambient temps around 70F. I even gunned it at one point because a mustang was tailgating me.
     
    • Like x 1
  9. silentsnow31802

    Joined:
    Feb 26, 2016
    Messages:
    428
    Location:
    Napa, Ca
    Wow mine is not efficient at all... Im the only 280-299 vote. Although I do commute 90% of my driving at 80Mph with the heater or AC running to keep the interior at 68 degrees. Aero wheels with the covers off.
     
    • Informative x 2
  10. jsmay311

    jsmay311 Member

    Joined:
    Apr 22, 2016
    Messages:
    793
    Location:
    Chicago suburbs
    [​IMG]

    ;)
     
    • Funny x 2
  11. woof

    woof Fluffy Member

    Joined:
    Apr 30, 2009
    Messages:
    1,409
    Really depends on your local weather. Here in New England, I was getting over 360 on trips during the Winter. Now that a mild Spring is here, I'm getting 200 for the exact same trips. My current lifetime is 300, and dropping fast (it was 320 two weeks ago). Need at least a year's worth of seasons to really know.
     
    • Informative x 2
  12. gtmotor

    gtmotor Member

    Joined:
    Apr 8, 2018
    Messages:
    193
    Location:
    Arizona
    254 Wh/mile over 2100 miles, A/C blasting the entire time, lots of freeway driving, 19" wheels. I'm super happy with this number!
     
    • Like x 1
  13. geometro

    geometro Member

    Joined:
    Jun 24, 2015
    Messages:
    315
    Location:
    Bay Area, CA
    Part of my commute is similar to yours and I have the same poor efficiency on this leg.
    The return trip is slower and more efficient, bringing my average down to 250-260.

    Speeds over 65mph seem to cause efficiency to drop a lot.
     
  14. insaneoctane

    insaneoctane Active Member

    Joined:
    Apr 6, 2016
    Messages:
    2,592
    Location:
    Southern California
    I am not a fan of the aero covers (mine were removed at delivery) but 90% at 80 MPH....You would likely actually see a measurable difference.
     
    • Like x 1
  15. novox77

    novox77 1.21 Gigawatts

    Joined:
    Nov 25, 2017
    Messages:
    1,210
    Location:
    NH, MA
    I had a brain fart. I usually get my units right. Looks like I had a sudden unintended acceleration on the forums.
     
    • Funny x 4
  16. novox77

    novox77 1.21 Gigawatts

    Joined:
    Nov 25, 2017
    Messages:
    1,210
    Location:
    NH, MA
    Oh, I did a 100-mi round trip at 80mph, no HVAC, and I averaged 254 Wh/mi. Ambient was around 60F.

    I usually stay around 70mph on the interstate, but this particular morning, I saw a Model S, so I decided to keep up with it.

    My lifetime number is 214 Wh/mi and dropping. As someone else mentioned, cold weather driving in New England with heater on pushed the average up.
     
    • Informative x 1
  17. SomeJoe7777

    SomeJoe7777 Marginally-Known Member

    Joined:
    Mar 28, 2015
    Messages:
    1,665
    Location:
    Houston, TX
    Although many trips are on Houston freeways, my commute is typically a lot of surface streets with many traffic lights, so I do a lot of stop and go. I'm seeing 240-250 Wh/mi average in 2500 miles with 19" sport wheels.

    One thing that makes a large difference for me on the stop-and-go portion is using chill mode. I can drop my morning commute from 250 Wh/mi to 210 Wh/mi using chill mode. It doesn't make any difference on freeway drives, though.
     
    • Informative x 2
  18. Boourns

    Boourns Active Member

    Joined:
    Mar 9, 2016
    Messages:
    1,517
    Location:
    Dallas
    Hmm. A large portion of my commute is stop and go highway traffic, usually with AP on. I wonder if I'll see a difference using chill mode when AP is engaged.
     
    • Like x 1
  19. silentsnow31802

    Joined:
    Feb 26, 2016
    Messages:
    428
    Location:
    Napa, Ca
    I have noticed this too. On my way home when there is no traffic my consumption is very high. On my way to work when there is some traffic, slower speeds, and the ability to get a slight draft going behind traffic I get way better consumption. It averages pretty high still though.

    I did a very long test of my consumption with the aero covers on VS off for my commute and saw about a 4% difference if I remember right. Not enough for me to use the aero covers for commuting. Just looks so much better with them off.
     
    • Like x 1
  20. Nfuzzy

    Nfuzzy Member

    Joined:
    Aug 27, 2015
    Messages:
    17
    Location:
    CO
    214 lifetime, over 900 miles now. Aeros. Majority at or below 65 mph.
     
    • Like x 3
    • Informative x 1

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