Can the car still move when parked with the engine running?
3 Answers
Parking with the engine running means keeping the engine in an idle state, so the car cannot move. Conditions for keeping the engine running: Generally, it is only necessary to keep the engine running when the engine temperature is too high, allowing the coolant to continuously circulate and dissipate heat; another situation is when the battery is low on charge, requiring idling for a period to recharge. Introduction to engine idling: Engine idle performance has a significant impact on emissions, fuel consumption, and comfort, making it an important indicator for evaluating engine performance; during idling, the engine is disconnected from the transmission system, and the throttle pedal is completely released, so the engine only overcomes its own resistance without outputting power.
Having played with cars for years, I've found that keeping the engine running while parked does allow the car to move—just step on the gas and go without restarting. Idling keeps the AC running and charges the battery, which is super convenient for heating in winter. However, the downsides are significant: idling consumes an extra half-liter of fuel per hour, increases emissions, and pollutes the air, especially in congested cities, so I avoid it. Short stops like waiting at a red light might be okay to try, but for long stops or poorly ventilated areas, it's best to turn off the engine to prevent carbon monoxide poisoning. Developing good habits makes driving safer, more eco-friendly, and saves on maintenance costs.
When I first started driving, I was always afraid that the car wouldn't start after parking and turning off the engine, so I often let the engine idle to keep it ready for immediate departure. Idling also allowed the car to charge and use the air conditioning, which was simple and convenient. However, there were many hidden dangers, such as increased fuel consumption wasting money, and the accumulation of exhaust fumes in the garage posing a poisoning risk. Now, I only let the car idle for short stops like picking up or dropping off kids, and I turn off the engine for longer stops. From experience, this approach saves money and gives peace of mind.
