BMW i3 REx 2014
A quick experiment to check out the kWh use for a standard pre-condition (30 mins?) at 1C ambient gives 2.9kWh!
Presumably, not preheating only saves that 2.9kWh if you then don't heat the cabin to the same extent when you set off driving.A quick experiment to check out the kWh use for a standard pre-condition (30 mins?) at 1C ambient gives 2.9kWh!
Yes, not unexpected, but I have my recorded KWh used at source to be way different to what the car states as a result of preheating. However, I expect this should be the most efficient way to heat the cabin as you shouldn't be dealing with the losses in converting AC to DC and back again to heat from the battery once underway.This is where some cars are a bit sneaky with consumption displays, I think, because if you preheat, the consumption displayed will be better