Quick Answer
Running a car engine to stay warm is not a safe choice, as it can lead to carbon monoxide poisoning and waste fuel, especially in an enclosed space such as a snowed-in vehicle.
Risks of Carbon Monoxide Poisoning
Running a car engine in an enclosed space can lead to a rapid buildup of carbon monoxide, a colorless, odorless gas that can be deadly in high concentrations. The American Automobile Association (AAA) recommends keeping a vehicle’s windows open slightly to prevent this buildup, but even then, the risk remains. In a snowy environment, it’s essential to prioritize ventilation to avoid carbon monoxide poisoning.
Fuel Efficiency and Waste
Idling a car engine in cold temperatures can quickly deplete the fuel tank, leaving you stranded with a dead battery and a empty tank. A 2014 study by the US Department of Energy suggests that idling a car engine for more than 30 seconds in cold temperatures is less efficient than turning off the engine and restarting it when needed. Additionally, a cold engine can waste up to 20% more fuel than a warm one.
Alternative Heating Methods
If you must stay warm in your stranded vehicle, consider alternative heating methods such as hand and body warmers, which can be purchased at most outdoor stores. These warmers produce a low-level heat that can help keep you warm without the risks associated with idling the engine. It’s also essential to keep your vehicle’s air vents open to provide some airflow and prevent carbon monoxide buildup.
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