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Free Supercharger Miles inaccurate deduction

catware

Member
May 26, 2019
15
32
Bend, OR
Hello,

I just used a supercharger for the first time after receiving my M3 yesterday. I was plugged in for about 10 min, and the car said it added 63 miles, and my Tesla account says the car received 16kWh.

My "Loot Box" however now says I have 4800 free miles remaining, from the 5000 free miles I had previously from the referral. So it deducted exactly 200 miles, even though the car itself only received 63 miles.

What's up with that? Thx!
 

catware

Member
May 26, 2019
15
32
Bend, OR
I went back to the supercharger, to see if maybe it was rounding in increments of 200. The car received 18kWh this time, about 70miles of range, and it deducted another 225 miles from my balance.
 
  • Funny
Reactions: Leafdriver333

edigest

Member
Apr 16, 2019
154
151
AZ, Sometimes TX
Hmmm ... not a conspiracy buff but the numbers are interesting.

The normal calculation for those with 1000 mile annual free charging is 2.5 kW/mile. (400 kW ~ 1000 miles) You're being charged 12.5 kW/mi, five times the standard figure. (16 kw ~ 200 miles & 18 kW ~ 225 miles both to work out to 12.5 kW/mi) 5000 free miles is also five times the 'normal' free miles.

Might want to ask the service center how they calculate the free miles.
 

xp3nd4bl3

Member
May 14, 2019
18
10
Temecula, Ca
That's really odd, it's the opposite of my own experience and others I've spoken to. The dozen or so times that I've supercharged I've only been deducted about 60% of the miles that I actually charged compared to the rated efficiency (240Wh/mi).
 

Kuhz

Active Member
Oct 25, 2017
1,901
2,071
Mars
Hmmm ... not a conspiracy buff but the numbers are interesting.

The normal calculation for those with 1000 mile annual free charging is 2.5 kW/mile. (400 kW ~ 1000 miles) You're being charged 12.5 kW/mi, five times the standard figure. (16 kw ~ 200 miles & 18 kW ~ 225 miles both to work out to 12.5 kW/mi) 5000 free miles is also five times the 'normal' free miles.

Might want to ask the service center how they calculate the free miles.
You may be on to something here....
 
  • Like
Reactions: Leafdriver333
Jun 1, 2018
53
74
Florida
Thanks! Going off the kWh the vehicle received explains the rounding. And it's off by a factor of 5 on top of that. I will pass on this info to my delivery advisor who I already emailed.

Please keep us posted. I have not yet used any of my 5,000 miles and will be doing a 3K mile trip at the end of the month.
 
  • Like
Reactions: Pommie

karn101

Member
May 28, 2019
24
6
NY
Hello,

I just used a supercharger for the first time after receiving my M3 yesterday. I was plugged in for about 10 min, and the car said it added 63 miles, and my Tesla account says the car received 16kWh.

My "Loot Box" however now says I have 4800 free miles remaining, from the 5000 free miles I had previously from the referral. So it deducted exactly 200 miles, even though the car itself only received 63 miles.

What's up with that? Thx!

Just had the exact same experience. Went from about 60 miles left to 280 (so 220 miles). My balance dropped from 5,000 to 4,325 (675 miles).

That’s triple the rate...
 

catware

Member
May 26, 2019
15
32
Bend, OR
Just had the exact same experience. Went from about 60 miles left to 280 (so 220 miles). My balance dropped from 5,000 to 4,325 (675 miles).

That’s triple the rate...

Let me guess, your Tesla Account shows the car received 54kWh for that charge?

I emailed my delivery guy who then emailed Tesla Referral Program folks. I'll update this thread when I get a response! karn101, you might want to send out the same email for your situation.

Here's the email address:

[email protected]
 

Tha_Reaper

Member
May 13, 2019
89
46
Belgium
According to teslafi I added 722 km to my rated range from 2 times supercharging.
Out of my 7500km free supercharging, I have 7056 km left, so I got actually charged less than I used. Your case is odd
 

chloej

New Member
Jun 8, 2019
1
0
Seattle
I had the exact same issue today when I took my new M3 to a supercharging station for the first time. I charged around 120miles, but I got a 312 miles deduction from my account. Can't find any description about how they calculate the miles, but I think it is NOT OKAY if they advertised 5,000 free miles in the meantime calculate miles differently.
 

Leafdriver333

Somewhat Active Member
Mar 21, 2019
1,070
824
usa
Tesla is doing some shady practice to save money. Lol.
Meanwhile, on my 1000 referral miles.....19 kwh was charged yesterday and 48 miles were deducted.
 

dEEt

Member
Jun 9, 2019
9
2
Connecticut
Same thing here. Picked up new M3LR on Thursday. Decided to test the Supercharger yesterday (Saturday 6/8/19). Car was 59% full to start. Online Tesla account says 24 kWh were added but 300 miles were deducted from the "Loot Box"?! There was no possible way that 300 miles could have been added to the car. Best guess is that around 100 miles were added = 3X surcharge on the Free Supercharger Miles?! Not sure how to resolve this...
 

edigest

Member
Apr 16, 2019
154
151
AZ, Sometimes TX
... Online Tesla account says 24 kWh were added but 300 miles were deducted from the "Loot Box"?! There was no possible way that 300 miles could have been added to the car. ... Not sure how to resolve this...

That's another 'vote' for 12.5 kW/mile rather than the standard 2.5 kW/mi. My guess is somebody at Tesla made a math error. Once enough people point it out, they should fix it.

Contact your delivery agent or call the service center and ask for a delivery manager.
 

lingkai

Member
May 26, 2019
12
12
San Jose
I have emailed my owner advisor and ask her help to correct the mistake.

21 kwh for 262 miles is not correct.
 

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karn101

Member
May 28, 2019
24
6
NY
Let me guess, your Tesla Account shows the car received 54kWh for that charge?

I emailed my delivery guy who then emailed Tesla Referral Program folks. I'll update this thread when I get a response! karn101, you might want to send out the same email for your situation.

Here's the email address:

[email protected]

Yep, you were spot on. 54kWh.

I sent an email out to [email protected]. I'll send another one to this email as well.
 

duckm4n

Member
Jan 30, 2018
32
31
Fairfax, VA
This happened to me too. I emailed support. Here is what is happening. The supercharger credit is actually a kwh credit. Someone on the subreddit calculated that 5000 miles = 2000 kwh. Thereore 1000 miles = 400 kwh. The deduction is being calculated off of the non-bonus amount and then applied to the bonus amount. In my situation I charged 10 kwh and got by bonus deducted by 125 miles. Here's the math:

10 kwh / 400 kwh = .025

.025 x 5000 miles = 125 miles.

This math works out for everyone else's deductions as well.

Seems like their fix for people not getting the 5000 miles credit was just to multiply the standard bonus by 5 on the app and not change the back end math.
 

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