Pete UK
Member
Thank you for this, really appreciate it.
I tried to do some research last night on this. From what I found, Tesla use 270Wh/m for the rated consumption. But this is the consumption including charging losses and heat loss. In reality it has absolutely no bearing on daily use (for reference at least) as you can't account for this. Its just a pure calculation to show absolute total energy used.
The actual range calculation is using 242 Wh/m. However, this does not include the energy used by the on-board electronics, ac and thermal management system, just the energy used by the motors and remaining battery capacity through BMS - to display the remaining range. Again no bearing on the actual energy used.
To account for this, the Wh/m needed in the real world (as shown on the display) to achieve the rated range is 225Wh/m
So exactly what you have calculated!
I think the 19" wheel variant needs to achieve 217Wh/m to get its rated range.
All interesting but for me, now I know the magic number is 225Wh/m and I can quickly calculate the actual remaining range. E.g. our current lifetime Wh/m is 9% higher than the rated figure, very easy to know how many miles remaining.
Before anyone says, just rely on nav, routing etc, I do, I just like to have a reference point.
No Problem, you're welcome.
Yeah, interesting going down the rabbit hole on this but in the real world, as you say it's pretty meaningless. Same as planning a trip in an ice car using the manufacturers quoted MPG.
Best way for simplicity is just take 10% off the estimated remaining range, as a rough and ready guide. You won't be far off.
or multiply the % of your battery remaining by 3 gives you the 'real' number of miles range left !
100% = 300 miles
66% = 200 miles
33% = 100 miles
20% = 60 miles
10% = 30 miles
1% = oh
Pretty easy