Introduction
Many drivers believe restarting a vehicle uses more fuel than leaving the engine running. However, modern engines are designed to start efficiently and often use very little fuel during startup.
Fuel Used During Idling
When a car idles, the engine continues to burn fuel even though the vehicle is not moving. Over time, this can add up to unnecessary fuel consumption.
Fuel Used When Starting the Engine
Modern fuel-injected engines use only a small amount of fuel during startup. In most cases, restarting the engine uses less fuel than idling for an extended period.
When It Makes Sense to Turn Off the Engine
If you expect to be stopped for more than about 30 to 60 seconds, turning off the engine can help save fuel.
Conclusion
For modern vehicles, restarting the engine typically uses less fuel than letting the car idle for long periods.
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