Actually I wasn't referring to ICE, just that the climate influenced the realistic daily range too. But your remark is very interesting, I would have thought that combustion did not suffer much from the cold.
I believe those were factors once upon a time, but modern cars tend to heavier and more aerodynamic than they once were, so drag is less of a factor... and the air gets warmed up prior to combustion, which minimizes the impact of its initial temperature.