Quote:
Originally Posted by xXRAGHAVXx
I hope everyone knows you don't need to idle your cars to warm them up if you have modern engines.
Cars with electronic fuel injection do not need to be warmed up before lightly driving off. This is because fuel injected engines can compensate for temperature changes. Cold engines run rich to compensate for poor fuel atomization. This means extra fuel is injected into the combustion chamber.
Now fuel is a solvent, so when extra fuel gets on the cylinder walls, it washes away the oil from the cylinders and pistons. Less oil on the cylinder walls means less protection, and because the oil is cold it makes it harder for it to be replaced. This means the longer you spend with your engine cold, the more wear you’ll have. Idling the engine doesn’t put much heat into it, so the car remains cold for a long duration.
If it’s cold outside, you can wait 15-30 seconds to ensure that oil is flowing, but you don’t need to wait for the engine to be warm. It will heat up faster by driving the car lightly. By heating it up faster, the oil gets to operating temperature more quickly, and this is what you want to prevent wear. If it’s really cold outside, the time it takes to scrape off the windows so you can see will be plenty of time for oil to start circulating, so you can get in and go once you can see out the windshield. - Engineering Explained
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All these are accurate points if the goal is maximizing longevity of the vehicle and reducing wear to the absolute minimum possible.
However this does not solve for the car interior/steering wheel/ seats being prewarmed before I get in. Or in the summer precooled before I get in. I am happy to sacrifice a few tenths off the longevity of the vehicle for the convenience of the feature. Seeing that most other manufacturers have incorporated this into most/all models in my opinion BMW should offer the functionality. Even if it only works through the app which means it is purely software code to make it work.
Much like auto stop start it is a feature that some like and some use and those that don't can shut it off. The fact BMW should deliver on the feature doesn't mean everyone wants it.