Should the Engine Be Turned Off in Traffic Jams?
4 Answers
Whether to turn off the engine in a traffic jam depends on specific circumstances, as detailed below: Short-term stops do not require turning off the engine: If the waiting time is less than one minute, there is no need to turn off the engine. Restarting the engine after turning it off can actually increase fuel consumption. The correct approach is to shift an automatic transmission car into N (neutral) gear and engage the handbrake, while a manual transmission car should be shifted into neutral with the handbrake engaged. Long-term stops require turning off the engine: In prolonged traffic jams, it is advisable to turn off the engine directly to avoid prolonged idling. This fundamentally addresses fuel consumption issues. If the car is not moving while the engine is idling, it continues to consume gasoline and increases exhaust emissions, polluting the air. Prolonged idling also tends to cause carbon buildup, increasing engine maintenance costs.
Turning off the engine during traffic jams does save fuel and money, as idling continuously consumes gasoline—approximately 0.5 liters per minute—which adds up significantly over time while also reducing emissions and benefiting the environment. However, avoid frequent restarts to prevent premature wear on the starter motor and battery, which could lead to higher repair costs. If the expected standstill exceeds 1 minute (e.g., during highway gridlock), shutting off is advisable; refrain from doing so during short red lights or slow-moving traffic. Note that AC stops working when the engine is off, compromising comfort in extreme winter/summer heat. Safety first—never turn off the engine on slopes or in rainy/foggy conditions to avoid rolling or reduced visibility. Balance savings and convenience wisely, adopting the habit moderately without overdoing it.
Veteran drivers remind that turning off the engine in traffic jams requires caution to avoid vehicle damage. Frequent starts and stops place a heavy burden on the engine's starting components and accelerate battery depletion, potentially leading to unexpected breakdowns. While idling consumes fuel, it helps maintain stable engine temperature and reduces wear from cold starts. Turning off the engine for over 30 seconds to save fuel can be reasonable, but ensure that the air conditioning circulation doesn't compromise comfort. Beginners should first familiarize themselves with their vehicle's manual to avoid blind actions that could harm the car, especially with older models requiring extra caution. Regular maintenance of the lubrication system helps reduce friction noise—there are many cost-saving tricks, but never at the expense of driving safety. Only turn off the engine when completely stuck, and stay flexible in response.
Whether to turn off the engine in traffic jams depends mainly on safety and comfort. Stopping the air conditioning causes rapid temperature spikes or drops inside the car, which can be uncomfortable, especially when traveling with family or children—this should be a top priority. Turning off the engine also affects brake assist, requiring more effort for braking and making steering stiff, which slows emergency response and increases risks. It's advisable not to turn off the engine lightly to maintain a stable cabin environment. Try fuel-saving measures only when the weather cools or traffic conditions improve. Weigh the trade-offs to avoid minor issues leading to major trouble.
