Should You Warm up Your Engine by Letting Your Car Idle in the Winter?

It's not that cold out. Should I still be plugging in my car? - The Globe and Mail

How long can my car idle before I run out of gas?

Do I need to let my car warm up in winter?

Start your engine, but don't idle too long

Fact or Fiction: Is Warming Up Your Car in Winter Bad?

Engine Idling - A Quick Way to Waste Money

Tips For Warming Up Your Car in the Winter

In cold weather, how often should I start my car?

Winter storm weather: Why it may be a bad idea to warm up your car