I am not crazy about winter and it appears my car isn't either. As I tried to learn all about how to drive my smart ED over the summer and fall, I was pleasantly surprised to find that the car's sensors and internal computer would consistently show a range of around 150 km.
Now that winter is here, I still am a little shocked when I get into the car and it shows me a potential range of 74 km! I had been advised that the cold weather and a cold battery would result in up to 30 percent lower range in the winter, but that was a loss of 50 percent of my warm weather standard.
So here is what I am learning. My car seems to under-estimate and over-deliver on range. If I rely solely on what the car calculates as my range, it understates what the battery capacity will actually deliver. I am picking up good tips such as pre-heating the cabin while the car is plugged in before I start out to help extend the range a bit, and I do that whenever I can. But that doesn't seem to impact how far my car tells me I can go.
As an example, on a recent cold, dark evening, I started out with the car showing a range of 74 km. Yes, the cabin was all pre-heated when I got in. I drove 45 km and used only 35 percent of the battery power. And on that trip I used the electric seat warmers for a while, the heater and fan for the entire trip, the wipers and lights. Assuming another 45 km would use a further 35 percent, it would still leave me with 30 km or more to go on 30 percent of the battery (although I haven't tested yet exactly what happens when I get down to the final 20 percent of power.) That would have been close to 120 km total range which was much better than the car was reporting it would do.
So I am starting to not panic as much when I get in and see how far the car tells me it can go. I now interpret this as my car not wanting to be out in the cold — much like me. It likes being plugged in and protected in the garage and I don't blame it one bit!