This April, we started an aggressive no-idling campaign in
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MYTH #1: In the winter, vehicles must be warmed up for a few minutes before they are driven.
FACT: Modern vehicle engines do not need to be warmed in the winter before they are driven. Ever since electronics were introduced to control engines, the need to warm up a vehicle before driving it has been eliminated. So now, sitting in your car in the winter waiting for it to warm up is a waste of time and gas, increases pollution, and does not protect your engine at all. To make matters worse, emissions from an idling vehicle in winter conditions are more than double the normal level immediately after a "cold start".
MYTH #2: It takes more gas to stop and restart an engine than it does to idle it.
FACT: Ten seconds of idling uses more fuel than turning off the engine and restarting it. So if you are stopping for more than 10 seconds – except in traffic, turn off the engine.
MYTH #3: Idling the engine for a few minutes warms up the vehicle.
FACT: Warming up the vehicle means more than warming the engine. The tires, transmission, wheel bearings and other moving parts also need to be warm for the vehicle to perform well. Most of these parts don't begin to warm up until you drive the vehicle away. The catalytic converter – the device that cleans pollutants from the vehicle's exhaust – doesn't function at its peak until it reaches between 400°C and 800°C. The best way to warm the converter is to drive the vehicle. Driving a vehicle cuts warm-up times in half. This reduces fuel consumption and greenhouse gas emissions.
MYTH #4: Restarting a vehicle is hard on the engine and starter.
FACT: Restarting a car many times has little impact on engine components such as the battery and the starter motor. The wear on parts that restarting the engine causes adds about $10 a year to the cost of driving – money that you'll likely recover several times over in fuel savings.
MORE IDLING FACTS: