[ssh]

~5000 miles, EcoPro and B, 3.6 mi/kWh since factory. March-July 4.28 mi/kWh avg.

My battery likes it quite warm. Saw the GOM at 303 mi @ 80% SoC with 112 F degrees indicated on the dash today. Car had finished L2 charging 30-80% a few hours before, sitting in the sun. Ambient temp around 100 F.

Last time the GOM showed 301 mi was on delivery day at 100% SoC

Speed still messes with this. I saw it coming home on E-470 last night with 90ºF temps but driving at what you'd expect on a relatively empty highway with a 75mph speed limit.

 

[Filous]

Hello gentlemen, I have question regarding impact of i4 specific config on the car consumption. Do you have experiance, what config impacts car's comsumption and how? Specificaly I have eDrive40 with sport packet, towing equipment and 19 wheels and most of the time I am around 17-21Kwh/100km. Normal driving combinations of the city and some highway. However when I tested eDrive40 with basic confiq the comsumption was rather somewhere around 17Kwh/100km. Could this equip influence the comsumption? Thanks

 

[ssh]

Hello gentlemen, I have question regarding impact of i4 specific config on the car consumption. Do you have experiance, what config impacts car's comsumption and how? Specificaly I have eDrive40 with sport packet, towing equipment and 19 wheels and most of the time I am around 17-21Kwh/100km. Normal driving combinations of the city and some highway. However when I tested eDrive40 with basic confiq the comsumption was rather somewhere around 17Kwh/100km. Could this equip influence the comsumption? Thanks

There is extensive information on the forum about this.

Wheels and tires are the #1 impact, including how they are inflated. Also, your driving style (especially acceleration) will impact it. The other configuration elements don't impact it.

 

[Filous]

There is extensive information on the forum about this.

Wheels and tires are the #1 impact, including how they are inflated. Also, your driving style (especially acceleration) will impact it. The other configuration elements don't impact it.

Thanks for the note. I tried to search for it prior to the asking question, however did not find it particularly. i will look more info about wheels. Pointing in the right direction would be welcome.

 

[ssh]

Thanks for the note. I tried to search for it prior to the asking question, however did not find it particularly. i will look more info about wheels. Pointing in the right direction would be welcome.

There are quite a few threads in this forum:

https://www.i4talk.com/forums/consumption-batteries-range.45/

It really depends on what you're seeking to learn, specifically. I did my best to give you the TL;DR, but if there are specific questions you have, feel free to review threads there or make a new one in that forum.

 

[toitjie.cillie]

Very well explained and true, but even though cabin heat is "free" in an ICE, even an ICE uses more petrol when it is cold, wet, snowy, windy, dark and so on. The only thing is that we never really thought about that before we started driving electric. But sure, in an EV, if you keep high cabin temperatures the heating needed is huge due to very "poor" heat loss from the electric motor or the battery. The higher the cabin temperature the more battery energy is used due to the poor cabin insulation, especially in the i4 which can't even have thicker, laminated windows due to the frameless doors, so the heat loss is huge. I don't know if we get back some of this during the summer, maybe not having that enormous heat generator in front of us all the time is reducing the cooling needs also, but I think that regarding cabin temperature, an ICE has it's obvious advantage here even with the possible summer benefits of an EV.

Anyway, personally I think that the range anxiety is mostly caused by the slow charging. Even 20 minutes is too slow, especially since you have no idea how fast you will be able to charge when you plug in the car, since even if the car allows very fast charging, maybe the station does not. If we could charge from zero to 100% in 3-6 minutes every time and anywhere, like we can fill up the tank of an ICE, then nobody would bother or worry about the GOM figures, especially if every petrol station had an equal number of chargers as they have pumps today. So the problem is not the range or the GOM, but the slow charging and finding a charger.

The power usage to heat the car is infinitesimal by comparison to the power usage to move it.

 

[ashley1960]

The power usage to heat the car is infinitesimal by comparison to the power usage to move it.

You would be surprised how much power it takes to warm the car when the weather is cold, it affects consumption massively. On a cold day if I have to use the heater, my trip to the gym, which is downhill, the consumption is around 5 miles per kWh, when the heater is running it drops to around 2 miles per kWh, that is some penalty. Of course as you travel further the loss isn’t as bad but it is very noticeable.

 

[ssh]

You would be surprised how much power it takes to warm the car when the weather is cold, it affects consumption massively. On a cold day if I have to use the heater, my trip to the gym, which is downhill, the consumption is around 5 miles per kWh, when the heater is running it drops to around 2 miles per kWh, that is some penalty. Of course as you travel further the loss isn’t as bad but it is very noticeable.

True. But also much better with preconditioning for departure. Especially on shore power.

 

[barty]

The power usage to heat the car is infinitesimal by comparison to the power usage to move it.

I disagree and am with ashley1960 on this. Nothing hurts consumption more than heat (in my experience, I don't claim to be all-knowing). Not hills or wind or 85mph speeds. Heats saps my battery the most.

 

[i4.phil]

Usually i get awesome mi/kwh driving slowly at 50 mph on the freeway. But that can't happen too often because i have a lead foot problem lol.

 

[ashley1960]

Usually i get awesome mi/kwh driving slowly at 50 mph on the freeway. But that can't happen too often because i have a lead foot problem lol.

Wear trainers and you might get better consumption!

 

[ssh]

I disagree and am with ashley1960 on this. Nothing hurts consumption more than heat (in my experience, I don't claim to be all-knowing). Not hills or wind or 85mph speeds. Heats saps my battery the most.

I completely disagree with this. Outside temp impact on battery chemistry, altitude changes, and speed/wind resistance far outpace any heating costs, especially when I precondition for departure (which I do pretty religiously throughout our Colorado winters). This is demonstrable by very little difference in mi/kWh in winter/summer trips to/from Copper from home in Boulder (threads about this route on i4talk).

 

[barty]

I completely disagree with this. Outside temp impact on battery chemistry, altitude changes, and speed/wind resistance far outpace any heating costs, especially when I precondition for departure (which I do pretty religiously throughout our Colorado winters). This is demonstrable by very little difference in mi/kWh in winter/summer trips to/from Copper from home in Boulder (threads about this route on i4talk).

I guess that's why they make chocolate and vanilla. I am an OCD numbers guy and my M50 is worse than my wife when it gets the least bit chilly. Also, I think you may disagree less than you think. When the heat is on, it's because it's cold. So, I felt it was implied (but probably communicated it poorly) heat = very cold out. So, yes, outside temperature -- which I equate to the need for heat - is far and away my biggest drain. In my own experience, temperature far surpasses altitude and wind, with a notable caveat that I live where there are no mountains (many many hills) and we rarely have extreme wind.

 

[ashley1960]

By far and away the biggest drain on the battery is making heavy use of the cars performance, you could drain the entire battery in under an hour using the cars performance on a race track or driving at very high speeds, nothing hurts more than that. Using the heating is a big drain initially, then the car gets warm and it’s not too bad after that, of course pre warming the car when it’s plugged in helps here. Driving up hills is another heavy drain which can’t be helped, driving in the rain creates massive drag, I would imagine that might cost about 40 miles on your range, it seems to hurt more than cold weather, although the UK isn’t as cold as as where some of you guys live, my worst consumption has been about 280 miles at around 3.5 miles per kWh and best in Summer around 375 at 4.7 miles per kWh. I normally drive around 60 mph.

 

[ssh]

I guess that's why they make chocolate and vanilla. I am an OCD numbers guy and my M50 is worse than my wife when it gets the least bit chilly. Also, I think you may disagree less than you think. When the heat is on, it's because it's cold. So, I felt it was implied (but probably communicated it poorly) heat = very cold out. So, yes, outside temperature -- which I equate to the need for heat - is far and away my biggest drain. In my own experience, temperature far surpasses altitude and wind, with a notable caveat that I live where there are no mountains (many many hills) and we rarely have extreme wind.

The heater uses about 1kW to heat the cabin. In a 2-hour drive, that's 2 kWh (visible when at a full stop with the heat on). A typical 60mph drive in my M50 without wind or altitude changes is 120 miles and (at 3.2mi/kWh) uses about 37.5 kWh. Adding 2kWh to that use to 3mi/kWh, a reduction of about 6%. Note that it uses less if the cabin is preconditioned for departure since it only has to keep it at temperature, which is quite efficient in the i4. Note: the 9kW heaters are primarily for the batteries, and this is how cold weather impacts the i4 consumption more.

If I take that same 120 mile drive and go up the mountains, I'll get about 2.2mi/kWh, a 31% reduction.

Drives at 85mph without additional wind have about half the impact of the altitude climb.

 

[zonerone]

By far and away the biggest drain on the battery is making heavy use of the cars performance, you could drain the entire battery in under an hour using the cars performance on a race track or driving at very high speeds, nothing hurts more than that. Using the heating is a big drain initially, then the car gets warm and it’s not too bad after that, of course pre warming the car when it’s plugged in helps here. Driving up hills is another heavy drain which can’t be helped, driving in the rain creates massive drag, I would imagine that might cost about 40 miles on your range, it seems to hurt more than cold weather, although the UK isn’t as cold as as where some of you guys live, my worst consumption has been about 280 miles at around 3.5 miles per kWh and best in Summer around 375 at 4.7 miles per kWh. I normally drive around 60 mph.

I find even a slight elevation change on route has a great effect.

 

[Paul]

Cold weather is really killing my expected ranges. I drive conservatively in ECO Pro mode on 19" All Season tires. My current expected range is only 234.5km based on the 84.5km I've driven since charging and the GOM of 150km. In the summer I get GOM ranges over 400km. I have been driving lots of short distances and I know that has a negative impact on ranges. Do my numbers seem about right for cold weather driving?

 

[ashley1960]

Cold weather is really killing my expected ranges. I drive conservatively in ECO Pro mode on 19" All Season tires. My current expected range is only 234.5km based on the 84.5km I've driven since charging and the GOM of 150km. In the summer I get GOM ranges over 400km. I have been driving lots of short distances and I know that has a negative impact on ranges. Do my numbers seem about right for cold weather driving?

Yes it’s horrible this time of year. I generally get over 4 miles per kWh in Summer, it’s a different story in Winter. The cold weather has ruined my consumption, I’m currently running at 3.5 miles per kWh, only because I did a long journey of 190 miles at around 3.7 miles per kWh otherwise I would be just over 3! Running the heater doubles your consumption initially then it levels out on long journeys but the cold coupled with wind, wet roads and anything else it’s just miserable.

 

[Paul]

Yes it’s horrible this time of year. I generally get over 4 miles per kWh in Summer, it’s a different story in Winter. The cold weather has ruined my consumption, I’m currently running at 3.5 miles per kWh, only because I did a long journey of 190 miles at around 3.7 miles per kWh otherwise I would be just over 3! Running the heater doubles your consumption initially then it levels out on long journeys but the cold coupled with wind, wet roads and anything else it’s just miserable.

Thanks! I guess I'll count on crappy consumption in the city and a bit better on the highways.

 

[smatanovic]

Chiming in here with some anecdotal info from my road trip yesterday. We drove from our home in Philadelphia to New England to see family for Christmas:

• 332 highway miles
• 50.2 mph average (holiday traffic)
• It was windy and cold; temp never got much above 15f, but at least it was dry the whole way.
• 2.8 mi/kWh for the whole trip
• 2 charging stops (we left home with 36% SOC); first at a Chargepoint DCFC about 25 miles north of home, then at an Applegreen DCFC on the Merrit Parkway around Fairfield, CT. We arrived with ~10% SOC.

Given the temperature and traffic, I am happy with these numbers.

ETA: the chargers in CT were ICE'd when we arrived (GRRRRRRRRRRR!!!!!!!!!). I got out and asked the inconsiderate pieces of sh*t to move (which they did).