Idling your car does little to warm up your engine. As Popular Mechanics says, “The best thing to do is start the car, take a minute to knock the ice off your windows, and get going.”
Unnecessary idling adds extra emissions to the air and can damage your engine over time. As long as your windows are clear, it’s safe to drive your car. It will warm up best as you drive.
Yes, this might contradict the advice your parents or grandparents gave you when you learned to drive. Carbureted engines from the 1980s and before required an engine warm up, but today’s vehicles are designed differently.
Learn more in this Popular Mechanics article here.