dgpcolorado
high altitude member
While I agree generally with this, keep in mind that cold air is more dense and that increases drag. So, it depends on how much the temperature drops while you are driving. I realize that it usually wouldn't be much on a given trip, so you are right that the cabin heater would likely be the biggest factor in reduced range.i would assume that if the temperature drops while you are driving you shouldnt get much range loss as the battery gets heated passively by being used and the extra energy consumption comes from the cabin heater? Anyone got any words on this?
I'd also like to point out that using the AC in hot weather can lead to a big range hit when the AC is running full blast to cool the motor and battery as well as the cabin (which is common when driving at highway speeds in the desert, especially uphill). One way to get a "snapshot" of how much power the AC or heater is using is to shift to neutral. You can read the power being used on the meter in the Instrument Cluster; it is usually near zero in neutral when the AC or heater aren't running. I've seen readings in the 5-7 kW range for AC when driving in the desert, which is a big range hit and explained why my energy graph kept falling below the initial projection. I would guess that it is not something one faces in the UK (or Canada for the OP)...