ronk wrote: ↑Thu Dec 08, 2022 4:32 pm
It’s maybe not the most fuel effective way
It was always quoted in the 'old days' that a car used around 10% more fuel with the a/c compressor running. As refrigerant has become a LOT more efficient over the years the compressors have got smaller, needing less energy to drive them. Electronics now control them a lot more efficiently too. Cars in general produce a lot more power, so the percentage of engine power is very very low.
I would be surprised if fuel efficiency drops by more than a couple of percent with the a/c on these days TBH. I heard that opening the window is worse for fuel efficiency!
If you look at the back of your modern domestic fridge, running on R600a (butane!!
), the compressors are absolutely tiny these days. Yes folks you have highly combustible butane under massive pressure in your kitchens. Scary, huh?
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!