There is a common misconception among many drivers that keeping a vehicle’s engine running while stationary—known as idling—is better for the engine than turning it off and restarting it. However, automotive experts and recent reports indicate that modern engine technology has rendered this belief outdated. Frequent starting and stopping of an engine no longer causes the excessive wear and tear that older vehicles experienced, meaning that idling provides no mechanical advantage for engine longevity.

Beyond mechanical wear, the practice of idling has significant implications for fuel consumption and environmental impact. When a vehicle is idling, it consumes fuel without moving the car, leading to unnecessary emissions and wasted energy. While some drivers may choose to idle to maintain cabin temperature or out of habit, the consensus among mechanics is that turning the engine off is the more cost-effective and environmentally responsible choice for most short stops. The Independent notes that the practice does not help an engine last longer, contradicting the long-held belief that frequent restarts are more damaging than letting the engine run idle.