Does coasting in neutral save fuel in manual transmission cars?

1 Answers
HopeLynn
07/30/25 3:48am
Coasting in neutral with a manual transmission does not necessarily save fuel and may even increase fuel consumption. The specific principles are as follows: 1. Many car models are equipped with electronically controlled fuel injection systems. When the car is shifted into neutral, the ECU defaults to the car being in an idle state, thereby increasing the fuel injection volume to maintain idle speed. 2. The electronic fuel injection control system inherently has the function of reducing or cutting off fuel. In this case, coasting in neutral loses this function and increases fuel injection volume. The damage caused by coasting in neutral in manual transmission cars is as follows: 1. Causes jerking sensations; 2. Reduces braking efficiency; 3. Affects engine lifespan; 4. Transmission gears are prone to breakage.
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