Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register

high energy use

saz25

Member
Oct 11, 2014
74
2
Johns Creek, GA
Hi,
I've had my S85D since August. Today was the coldest day yet; about 34 degrees.

Normally when I drive I notice the average energy usage is about 250-325 Wh/mi.
I have never seen it go above 350 unless I punch it and drive very aggressive.

Today, I saw it go above 480 Wh/mi and consistently stay above 400. It eventually came down to the low 300s.
Is this normal in cold weather? Since I live in New Hampshire I can expect temps in the single digits.

I just thought I'd ask you folks whether this is normal.

thanks in advance.
 

Lloyd

Well-Known Member
Supporting Member
Jan 12, 2011
6,334
2,200
San Luis Obispo, CA
Yes, especially if Battery heating is happening. If your battery gets cold soaked, then the car will use energy from the pack to heat the battery.
 

aronth5

Long Time Follower
Supporting Member
May 8, 2010
2,823
1,849
Boston Suburb
Hi,
I've had my S85D since August. Today was the coldest day yet; about 34 degrees.

Normally when I drive I notice the average energy usage is about 250-325 Wh/mi.
I have never seen it go above 350 unless I punch it and drive very aggressive.

Today, I saw it go above 480 Wh/mi and consistently stay above 400. It eventually came down to the low 300s.
Is this normal in cold weather? Since I live in New Hampshire I can expect temps in the single digits.

I just thought I'd ask you folks whether this is normal.

thanks in advance.

Saz25, You might find this a very helpful link from a Canadian forum member who has driven thru several cold winters.
http://www.teslamotorsclub.com/entry.php/194-Cold-Weather-Driving

You also may want to repost this to a Model S thread not the Model X area
 
Last edited:

David99

Active Member
Jan 31, 2014
4,856
7,166
Brea, Orange County
Yes the weather makes a big difference. Once the battery gets too cold it needs to be heated which is draining energy. Once the battery has reached a decent temperature, the battery heater will turn off and the energy usage will drop down again. If you drive short distances and then park the car (where it cools down again) and then drive again, you will always have a high energy usage. Cold temperatures definitely costs extra energy.
A normal ICE car produces a lot of heat which is very wasteful but it comes in handy in winter where the excess heat is actually useful. An EV, that is much more efficient and doesn't produce much heat under normal operation has to provide the extra heat needed in winter using the main battery.
 

CHG-ON

Still in love after all these miles
Jun 24, 2014
3,079
648
Santa Cruz Mountains, USA
Yes. Cold weather will significantly reduce your range. If it works for your schedule, turn on smart preconditioning, which will warm the cabin and the battery while plugged in. That will help reduce the amount of battery energy used to heat the battery itself.
 

saz25

Member
Oct 11, 2014
74
2
Johns Creek, GA
Yes. Cold weather will significantly reduce your range. If it works for your schedule, turn on smart preconditioning, which will warm the cabin and the battery while plugged in. That will help reduce the amount of battery energy used to heat the battery itself.

Smart Preconditioning won't help when my car is parked in a cold parking lot at work all day. True?
Should I remotely (via the app) turn on the heat before I walk to my car (5-10 minute walk) to heat it up for a while?
Is that a good thing?

Thanks
 

mknox

Well-Known Member
Aug 7, 2012
10,103
1,894
Toronto, ON
Well, it must be winter time for new owners once again :smile:

Yep, normal. And it will get worse at the weather worsens.
 

jerry33

(S85-3/2/13 traded in) X LR: F2611##-3/27/20
Supporting Member
Mar 8, 2012
20,001
24,684
Texas
Smart Preconditioning won't help when my car is parked in a cold parking lot at work all day. True?
Should I remotely (via the app) turn on the heat before I walk to my car (5-10 minute walk) to heat it up for a while?
Is that a good thing?

Smart preconditioning is supposed to, but it's not all that reliable yet. Using the App works just fine. Note that if you are plugged in shore power will be used rather than battery power.
 

Products we're discussing on TMC...

About Us

Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.

Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


SUPPORT TMC
Top