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UK standard range plus range on display

Discussion in 'Model 3: Battery & Charging' started by realscalextric, Sep 28, 2019.

  1. realscalextric

    realscalextric New Member

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    The UK range on the SR+ is stated as 254 miles. At 80% charge my car shows 184 miles, but 80% of 254 is 204. I realise actual range has many factors, but is this typical?
     
  2. TimothyHW3

    TimothyHW3 Member

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    This is the WLTP what you are seeing on the website. Tesla is using EPA for the internal calculation and display which is a pretty accurate measurement. In Germany it is WLTP rated at 409km, but the car shows around 380km inside.
    You will say, hey this is misleading, but blame it on WLTP, not Tesla. They are advertising EPA in the states. But better to have a real value than a deflated value. And if you are good with the pedal and don't overuse the AC you can easily achieve more than WLTP and EPA.

    I think it is 240 miles in the states, not sure if you guys use the same distance for miles. So you are still about 10 miles short. Try driving it for 1000km without going over 80-90% and charge it to 100% then and see.
     
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  3. realscalextric

    realscalextric New Member

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    Thanks. Super helpful answer and advise. much appreciated.
     
  4. KenC

    KenC Active Member

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    My understanding is that to convert WLTP to EPA, you need to divide WLTP/1.12 = EPA.

    Interestingly, on the UK site, the LR-AWD and the Performance get different ratings,
    LR-AWD 348 miles WLTP, ~310 miles EPA
    Performance 329 miles WLTP, ~293 miles EPA
     
  5. realscalextric

    realscalextric New Member

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    OK, so I've looked at this some more. I am seeing that people think it is a 50kWh battery, so 208 Wh/m gets you to 240 miles range. I've read that 217 is used for EPA calc, which does get me to the 185 range am seeing for 80% charge. Today, I started with 185 miles (80% charge). I've driven 62 miles at 279Wh/m which is 17kWh used. If the battery is 50kWh, that means there is 23kwH capacity left. Divide that by the 217, and I should see a range of 106 miles left. I actually see just 85miles. Everything I have read says the miles remaining on the battery item does NOT take into account how you are actually driving. If it did, the 85 miles would make a bit more sense, as this would seem to assume 270 W/m, which is in line with what I did for the 62 miles. This all seems very complicated, but the bottom line is that they range seems a LONG way short of the 240 EPA and the 256 WLTP advertised- todays 60 miles at 279wh would mean to total range of 180 miles, nowhere near 240. I'm sure I am not the only new owner trying to get there head around this and finding range is way less than expected. HELP!!!
     
  6. KenC

    KenC Active Member

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    50kWh was the guess for the SR model, not SR+.

    184 or 185 miles should be divided by 80% to get your rated range, which gives you 230 miles to 231 miles. The advertised EPA range for the SR+ is 240 miles. You're within the margin of error. So, your starting point is okay.

    Next, you're trying to figure out where your excessive battery usage is, due to driving or phantom drain while the car sits.

    You know, if you read some of the other battery threads, you learn that the more detail the less guessing people have to do when trying to understand your issue. The best way is to take pictures of your screen in order to eliminate confusion. I tried to follow what you wrote, but it's missing info. You need to take a pic of your screen at the start, and when you stop, and when you come back to your car and when you get home. Something like this:
    IMG_3455.jpg
     
  7. realscalextric

    realscalextric New Member

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    So I'm now a couple of weeks into having the car. The weather in the UK is still mild. I'm yet to charge the battery to 100%, I've been mainly going to 80% which displays 185 miles range. I've charged it once to 90% which gave me 200 miles, which is short of what it should be by about 16 miles (almost 7%).

    And however carefully I drive, I can't get anywhere close to projected range. Driving home this evening (440ft elevation gain over 19 miles) used an average of 340 wh/miles. Average speed was 22 mph. Close to no wind, and a mild 15degree's. To get the EPA range I think you need to hit 220 wh/miles and I can't imagine how I could come close to achieving that. The trip project screen (I've uploaded a screenshot), shows my actual efficiency was way less for the trip, but using that screen I should be eliminating the impact of elevation etc (my understanding is it takes that into account) I couldn't have driven more carefully/ non-aggressively. Does anyone have any suggestions. The range has been a massive disappointment to date. 20191015_165813532_iOS.jpg
     
  8. AlanSubie4Life

    AlanSubie4Life Efficiency Obsessed Member

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    #8 AlanSubie4Life, Oct 15, 2019
    Last edited: Oct 15, 2019
    To hit the EPA range you need to achieve 209Wh/mi. For the trip you show above, you started your trip with 136rmi + 18.8mi*317Wh/mi/(209Wh/rmi) = 164.5rmi

    This is not to be confused with the "Consumption" page of the Energy app, which will show your projected range matching your rated miles when your chosen averaging period is at 219Wh/mi.

    62mi * 279Wh/mi = 17.3kWh

    17.3kWh/209Wh/rmi = 82.8rmi

    So you should have 185rmi-83rmi = 102rmi left. (You show 85 rmi)

    However, if you did not record the remaining mileage exactly when you stopped, remember the trip meter does not show any of the energy used while the car is in Park. This can be a considerable amount of energy depending on what features you are using (Sentry, Summon Standby Mode, Cabin Overheat Protection, sitting in the car with the heat or AC on, etc.).

    If you want further clarification, just note the starting miles, the ending miles, and your trip data (miles traveled and Wh/mi). And then make a note again of these numbers on your way home. It'll all add up (most likely - it doesn't for everyone but for most it does).
     
  9. KenC

    KenC Active Member

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    Very strange. Your efficiency is terrible. Have you looked at your tires? Are they filled? They aren't wobbling or anything? At 25mph, even with an elevation rise, you should have amazingly good efficiency. Try turning off the heat next time. What's your lifetime efficiency?
     
  10. AlanSubie4Life

    AlanSubie4Life Efficiency Obsessed Member

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    #10 AlanSubie4Life, Oct 15, 2019
    Last edited: Oct 15, 2019
    It’s not that surprising with the interior temp set to 22C and exterior temp at 13C. Add a little elevation (440 feet over 19 miles in an SR is a minimum of ~40Wh/mi adder) and 317Wh/mi seems totally reasonable.

    Remember the slower you travel the worse is the penalty for heat use.

    Certainly should double check pressures though.
     

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