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Is coasting in neutral or in gear more fuel-efficient?

1 Answers

VanGarrett

07/30/25 5:00am

Coasting in gear is more fuel-efficient than coasting in neutral. Here are the specific details about coasting in gear: Principle: Coasting in neutral is equivalent to idling, where the engine still continuously supplies fuel, albeit more economically than during normal driving. When coasting in gear, the engine operates between low-speed fuel cut-off and high-speed fuel cut-off. At this point, the vehicle's computer detects that the car is in an idling state, but the speed is higher than the engine RPM, prompting the computer to control the engine to stop supplying fuel. Coasting in neutral: During vehicle operation, the driver shifts the gear lever to the neutral position, disengaging the clutch between the engine and the drive wheels, and utilizes the vehicle's inertia to coast.

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