With the development of electronic fuel injection control systems, cars entering neutral are defaulting to idle state by the ECU (Engine Control Unit), while increasing fuel injection to maintain idle speed. In this case, coasting in neutral may actually lead to more fuel consumption, akin to "adding legs to a snake."
Actual Fuel Efficiency Impact
In the past, coasting in neutral with most vehicles might have slightly saved fuel, but in modern cars, it is not always effective. New-generation car engines and fuel systems are designed to be more intelligent, and coasting in neutral may no longer be the most fuel-efficient method.
Safety Considerations
Besides fuel efficiency, safety factors must also be considered. Coasting in neutral causes the vehicle to lose engine traction, relying solely on inertia for movement, which increases the frequent use of the brake system. This can lead to overheating of brake discs, longer braking distances, and even brake failure.
Whether coasting in neutral in manual transmission cars truly saves fuel is not absolutely certain. With advancing automotive technology, it's important to assess the situation carefully and choose the driving method that best suits your vehicle. While striving for fuel efficiency, prioritize driving safety as well. Finding a balance is the wise approach.
