Worst winter efficiency challenge

[SFBanks]

For a bit of fun thought we could see who could do the worst during these cold months.

I will go first - details taken from TeslaFi, most drives were short doing the school run after preconditioning the car not plugged in.

Start SOC (Monday) - 90%
Number of Drives - 22
End SOC (Friday) - 15%
Miles Driven - 54.04

TeslaFi says my efficency was 49% at 448 Wh/mile but I assume that is only for the actual driving parts as it would be much worse. I calculate it was actually closer to 615 Wh/mile.

 

[Medved_77]

Different reporting metric but my efficiency at around zero degrees is just below 40%

This is perhaps a better indication when broken down by month with average temperature:

 

[Gatsojon]

Ouch. I have about a 180 mile round trip this week and was hoping to comfortably do that without a charge. Do you think I'd better prepare for no cabin heating?

 

[Medved_77]

Ouch. I have about a 180 mile round trip this week and was hoping to comfortably do that without a charge. Do you think I'd better prepare for no cabin heating?

You'll be fine. Just keep your speed below 30mph and you'll be just fine

Seriously though, you'll be fine, especially on a long journey where the car warms and stays warm.

 

[GRiLLA]

Ouch. I have about a 180 mile round trip this week and was hoping to comfortably do that without a charge. Do you think I'd better prepare for no cabin heating?

This is about short journeys where the majority of the power goes to heating, rather than driving. 180miles in a P should be pretty straightforward. Leave the charger connected and preheat it well for about 25mins before you leave then you'll get more or less the same range as in summer.

 

[Gatsojon]

You'll be fine. Just keep your speed below 30mph and you'll be just fine

Seriously though, you'll be fine, especially on a long journey where the car warms and stays warm.

Thanks. - I'll warm the car right up whilst still plugged in and take it easy on the motorway. I'd have plenty of options for a supercharger stop but time will be tight so I'd rather not.

 

[jimmythefrack]

I wish the picture were a little clearer... but 820 wh/m at -9F

 

[SFBanks]

I wish the picture were a little clearer... but 820 wh/m at -9F
View attachment 615327

That is a high consumption, what was the average over the whole range of the battery? charge to charge?