What's your mileage (mi/kWh)

4.8 at -3 without heater shows what I mean. My best ever over a long trip was 273km range (about 6mi/kWh). This was at the height of winter at around 23C, so no AC. At -3F, you have around 15% more drag. To get the best from the battery, it is heated - using more power. All adds up to using 4.8 vs 6.

 

So what you're saying is denser air causes decrease in range. I was referring to temperature of batteries. There sure are many variables that affect range, and with the SE's relatively short range the variables can make noticeable differences.

 

Without allowing for types of wheels and road conditions I don't think you can attribute the range difference solely to air density.

 

Totally agree - I am just saying that lower temps incur more air friction if all else stayed the same. You also have the battery monitoring/temp system (batteries don't like low temps), HVAC (which brave souls have tested without), tyres and a miriad of other things. The ideal temp is somewhere around 20-25C, where the battery is happy without much (if any) thermal management, the air is not as dense, and HVAC is not needed as the temperature is good. If the sun is shining and the humidity is low, with no standing water on a good road with no headwind (ideally a tailwind), you have the ideal environment for EVs (ie. Brisbane winter). You can get quite impressive efficiency and range values.

If you are in -3F with the heater on and there is ice/snow on the road and you are using hard winter tyres, then you can probably expect far less efficiency/range. Just a fact. ICE cars are no different, this isn't just an EV thing.

 

Winter driving range comparison by make/model - using stock wheels and Nokian WGR4 all weather tires my car is very close to what is on this chart.

 

Continental Extreme contact DWS. Don't know if they would be considered cheap or not. Husband bought and don't know what we paid. The wheels would probably be both open and sharp so that's probably hurting us. We didn't have it titled yet when we had the power spoke wheels and stock tires on it so can't compare range with those. Probably will put those back on in the spring and see how much difference it makes.

 

Recurrent's crowd-sourced data really annoys me because it aggregates preconditioning + EVSE, heated garages, and outdoor cold-soaked parked EVs. To be fair, all the vehicles would have to be parked outside cold soaking with no EVSE connected. Range loss would be more pronounced between different vehicles.

The mythical "heat pump" seems to be the energy saving device at 20-30F, but it doesn't seem to help much for 10F and lower.

 

(SE display showing 50,001 miles, -14 ºF, 16% SoC, 80% e-power)

 

So going off your GoM, that's 2.595mi/kWh?

 

Using Range Calculator it was close to that, 2.82 mi/kWh. I think that's about the worst I've had.

***********************************
Dec 22, 2022 at 17:59 ** -8.05°F ** Wind: 15.603 mph from NW ** Humidity: 0.72% ** Driven: 46.4 Mi ** Start-Batt: 73% ** End-Batt: 16% ** Mi / kWh: 2.82 ** GOM Reading: 12 Mi ** Range Left: 13.04 Mi ** Total Range (From 73% charge): 59.44 Mi ** Total Range (From 100% charge): 81.498 Mi


Earlier today I got a bit better, 3.19 mi/kWh:

***********************************
Dec 22, 2022 at 09:54 ** -10.552°F ** Wind: 13.136 mph from NW ** Humidity: 0.77% ** Driven: 39.6 Mi ** Start-Batt: 100% ** End-Batt: 57% ** Mi / kWh: 3.19 ** GOM Reading: 40 Mi ** Range Left: 52.55 Mi ** Total Range (From 100% charge): 92.15 Mi ** Total Range (From 100% charge): 92.191 Mi

The interesting difference between morning and evening is I used the cruise control more in the morning. Or maybe the evening had more resistance from blowing snow, or the cold-soaked batteries were a factor.

 

22 kWh/100km? Not terrrrible, considering the temps.

 

2.82 mi/kWh @ -14F
4.84 mi/kWh @ -3F (Green+ and no heated seats, climate off)

Just imagine if you had a heated steering wheel in the 2021 SE.

 

I love the heated steering wheel in my 23. FWIW, I only turn off all mod cons when I know I’m pushing the envelope a little bit on the range, and too lazy to take a short detour and 15 minute break. Otherwise, if my butt is cold or my knuckles are sore, the bum warmer and heated wheel are on. Every time I use the bum warmer, I laugh, because BimmerCode allows you to turn up the settings and I already find on low it gets too hot within a couple of minutes. With the MY Lounge Leather, these are easily the hottest heated seats I’ve ever sat upon.

 

I've never driven a car with a heated steering wheel, but I'm so happy with my activated AM radio that I don't notice any problems until I reach my destination and try to get out, but my hands are frozen in place.

 

I assume it is a Kona. No it is not terrrrrible depending on a lot of things. I am getting between 15.5 to 17.7 kWh/100km. And it is not not really cold here in SW Ontario ... yet. I normally drive in Normal mode but in the cold months I set my driving style to ECO and the temp to 20C. 90% in city driving. There is an other benefit to ECO mode. Short trips don't help either. It helps to keep the front tires from spinning. Give me more control. My average consumption over the last 6501km is 13.7kwh/100km - between the end of August to date.

 

Trade you 1.49mi/kWh from the GoM! Windchill is -23F right now so that makes it about a 70% range reduction from summer efficiency.

 

It is -13C today, windchill -20. On a 50km round trip, approx 50/50 highway and city, I scored 20kWh/100km.

 

Windchill doesn’t affect inanimate objects, though the wind can accelerate a heated object’s cooling to ambient temperatures. But 20 kWh/100km at -13°C seems ok indeed with wind (and I assume roads that aren’t clear and dry).

 

In a very unscientific test I did a morning cold soak test for 2.36mi/kWh with 30% e-power. After charging to 100% at noon, I set an evening departure time and will see the results tomorrow after I charge back up to 100% (parked outside and snowing). My consumption tracker said the evse started recharging the car around 30-45 min before departure time.

Departure time allowed for 100% e-power and temp outside was around 2-5F.

 

Thanks for the lesson in physics. You are correct but by referring to the presence of windchill I was implying that was also driving against some fierce wind. Considering the circumstances I am not surprised at 20kWh/100km. Merry Christmas