I've just found this thread and I'm with Malcolm on this one, as Tooks and others will have guessed.
I got 1.8 on my 12 mile, 23 minute drive to work this morning. I deliberately didn't preheat to see how bad it would be at -1.
My windows were all defrosted though, as if the car was keeping itself warm.
I check back on the app to last winter and the lowest I ever got in the Golf was 2.5
It's not the cost, that tiny, my question is why is it using so much power to heat the car/battery. I've changed to EV to be more efficient, this just isn't.
Now it will be at its worst but is it still going to be less efficient than many EVs right through the spring and autumn? I expect so unless VW do something in the software so I wasn't them to know they need to be working harder at that. Maybe they know that, maybe they don't care.
You see for me, as an aviation professional, this doesn’t scare me. Maybe I’m used to vehicles using more fuel/energy in the startup and takeoff phase, it’s consumption in the cruise I’m more concerned about and ultimately ‘how far can it go mister’!
Using your figures, the e-Golf was about 28% more efficient than the ID.3.
Some other figures are the ID.3 is at least 12% heavier, 33% more powerful and its temperature controlled battery about 42% higher capacity.
I think there is a lot of battery warming going on early doors in a journey, something the e-Golf could never do, that alone will likely account for most of the difference. It’s also a more powerful car.
I think there might be some mileage in VW being able to tweak software somewhere down the line, if they agree it’s a problem, but I guess we’ll see what happens when it warms up, and in any event they need to finalise the general software first.
Have you tried pre-heating with the seatbelt clicked in and the car powered up? I know it can’t be in drive mode in that configuration, but I wonder if that will start the battery heating/cooling circuits and take power from the wall box rather than the traction battery? I wonder if it does whether the software even accounts for that in the reported consumption number.
I suspect we’re all starting to overthink it to be honest, like you I can’t see why it would be any less efficient from a cold start than an e-tron, but they do have heat pumps, and an owner on here stated he’s seeing 2 to 2.5 in current temps.