Do I Need To Warm My Car Up Before Driving in Cold Weather?
No. There is no need to Warm Your Car Up before driving unless you want a warm interior when you get in.
Warming your car up is a waste of gas and actually terrible for your engine. The computer system in your car is designed to start the car and warm it up as quickly as possible, for fuel economy and emission, most cars warm up quicker when being driven not just idling.
If you need to Defrost your Windshield, a simple homemade solution in a spray bottle will do the trick: Combine 1/3 cup of water and 2/3 cup of rubbing alcohol. Spray onto your windshield and watch the ice melt immediately. This works because rubbing alcohol has a freezing point 128 degrees below zero.