Air conditioning doesn’t have a big impact anymore? The numbers vary of course from manufacturer to manufacturer (as well as weather, size etc), but the normal numbers are 10%-20%, which correspond to our current car (we lose around 11% on average, sometimes more if it’s really hot outside and we crank it up).
That’s actually quite substantial. Ours also isn’t on by default, it saves the last setting. Unless of course we set it below ambient, which then requires the compressor to kick in – but it turns itself off again as soon as the air is dehumidified and the correct temperature reached.
I do vape in the car when i’m by myself, vinegar with a good microfibre cloth is the answer for me.
Prior: SEAT Ateca Xcellence Lux 1.5 TSI DSG MY19, VW Golf GTE PHEV DSG MY23
Current: Hyundai Ioniq 6 Ultimate
Next: we'll see what's available in 2028.