Funny you should ask as I just completed another test on my Model X yesterday. Here’s my (simplistic) method.
I knew the car would be sitting for awhile, so I charged it to 60%, made note of the time, and let it sit. The next time I looked at the car it had used 14% in 510.5 hrs while sitting...
I knew my R1T would use energy while sitting in the garage looking pretty. So does my Tesla MX and I’ve monitored its phantom drain for years. In fact, I started just thinking of it as my cars resting metabolism - the energy draw while sitting in the garage - and that’s how I refer to it.
When...
Not exactly… at least not for me.
The trip meter method for me is highly inconsistent and inaccurate. I don’t know why. It can report anything from .2 to 3 kWh In a 24 hour period. Maybe it’s just my truck?
What I do know is that my truck has sat in the garage for a documented total of 479.25...
Bingo!
I’m keenly aware of the metabolism of my house and can measure (and somewhat control) how much I use. In fact my PV Solar (installed 2017) has provided almost all the electric power I’ve used during the past 6 years (I’ve purchased only 5,232 kWh of the 100,244 kWh my house has used...
You are correct. The metabolism is not consistent. I believe there are some reasons for that (another book) - however keeping all previous data for the times the car sits (over a year and a half time frame now) makes me feel like I have a very accurate average. It pretty much aligns with what...
There’s much discussion about phantom drain so, like you, I did my own study. I’m not an engineer, mathematician, or anything like that so my method is pretty simple - but I believe quite accurate (over time). I own both a Tesla MX and a Rivian R1T and use the same method to determine phantom...