Hey thanks for the reply!
You are correct with your educated guess, I was trying to get a sense of how much mileage one charge was going to give me, but I didn't drive a lot last week, so it did sit idle most of the time!
I'll keep in mind the idle energy draw and try to factor that in. Does this community have a sense of how much draw is normal? I know everybody has different settings and conditions, and here are some of mine for reference if it helps give somebody an idea of how much I could expect:
- Summon standby - I don't have FSD so I'm assuming this doesn't apply to me?
- Sentry mode - it is off at home (which is where I've been most of the time)
- Cabin overheat protection - off
- External temperature - it's been pretty hot last week with temperatures between 30-40 degrees C.
I did check the app daily to see if there was a lot of overnight draw, and the mileage remaining seemed consistent day-over-day, leading me to believe the draw was negligible. I know checking will also consume energy since it wakes the car up, so I tried to keep it to once a day.
I did manage to put 185km on it in one day yesterday though, and the remaining mileage said 162km (mostly highway). I had charged to 100% the night before for testing purposes, so it read 398km at the start of the day.
185+162 = 347km
Considering it was mostly highway driving, that seems more like the typical efficiency loss than the data I was seeing over the last week.
If the ultimate takeaway is just to plug it in more often on weeks where it is not being driven much, that's okay.
If I had seen the day-over-day loss, then it would have been more clear last week. But because it looked like not much idea energy was being lost overnight, it made me believe that there wasn't much idle energy loss.
But as of now, the small road trip taken yesterday does make me feel a lot better!
Mine loses between 1 kWh to 3 kWh per day via phantom drain, as calculated/verified by TeslaFi.
During winter, I expect the phantom drain to increase even more. It's a bit of a bummer but c'est la vie.