We’ve heard that in winter your car needs to warm up. But in fact, idling in winter has no benefit to newer model cars. Auto experts say no more than 30 seconds of idling is needed before you start driving. The engine will warm up faster being driven.
This is because most modern cars do not have carburetors, which needed to warm up to work well. New cars use electronic fuel injection. This makes the problem of warming up the car before driving irrelevant.
Even short periods of idling are significantly damaging. Indeed, it is better to turn your engine off and start it again. If every car in the U.S. idles for 6 minutes per day, 3 billion gallons of fuel is wasted annually and costs drivers $10 billion. That’s lots of vehicle exhaust containing pollutants that are harmful to your family’s health and the environment that are unnecessarily being released into the atmosphere also contributing to climate change.
Information from the Washington Post – Dec. 29, 2014