Is it a myth?
There are all sorts of tips and hints about proper car care that are passed down as words of wisdom. Sometimes they're helpful and sometimes they're completely outdated and only applied back when the Model T was a wonder of the modern age. What about the old advice to warm up your car in winter?
The idea behind this advice is that a cold car isn't ready to start moving. Fluids are thick and sluggish, so everything needs a few minutes to come up to temperature and start operating properly during the winter. Letting everything warm up will, theoretically, reduce engine wear and prolong engine life.
According to AAA Northeast's Car Doctor, John Paul, in a Boston.com article, you're buying into a myth. You don't need to warm up your car before you start driving, even in frigid winter temps that set your teeth chattering. That does not mean you can get in and start driving it hard the second you start the engine. Although you don't need to wait for your car to warm up, you should take it easy when you first start driving. Many cars even have a blue light the illuminates to let you know the engine is cold. While that light is lit, avoid hard acceleration, but once it's off, you're good to go.