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      05-07-2021, 03:09 PM   #47
Lieutenant General

Drives: BMW F11 535i Touring
Join Date: Mar 2007
Location: Scotland, Highland Region

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Originally Posted by PeakyJ View Post
Another thing that has a bit of an effect on engine warm up time is the climate control temperature.

If you have the A/C blowing cold air into the cabin the engine will warm up slightly quicker than if you have it blowing warm air into the cabin, due to it taking heat from the engine.
This will also be influenced by the ambient temperature. At colder winter temperatures the auxiliary electric heater will be active, assisting the cabin heating. Leaves a bit more waste heat to warm the engine. Some of remember how slow diesels were to heat without the auxiliary heater elements.

The other factor which is key to heating times, besides temperature, is fuel consumption. You canít heat the engine fast without higher consumption.

Those who heat fastest must be burning more fuel.
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