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Does Coasting in Neutral Save Fuel for Fuel-Injected Cars?

2 Answers

IkerRose

07/24/25 9:46pm

The behavior of coasting in neutral for fuel-injected cars: does not save fuel. Below is an introduction related to coasting in fuel-injected vehicles: 1. Advantages of fuel-injected cars: When starting a fuel-injected engine, it is generally unnecessary to press the accelerator, as fuel-injected engines have cold-start enrichment and automatic fast idle functions, ensuring smooth starting whether the engine is cold or warm. 2. Disadvantages of fuel-injected cars: When going downhill, releasing the accelerator reduces the load on the generator, putting the vehicle in a "coasting" state. At this point, the fuel injection system automatically reduces fuel output. If neutral is selected for coasting, the engine remains at idle speed, and fuel consumption does not decrease significantly. 3. Hazards of fuel-injected cars: With the gearshift lever in neutral, engine braking cannot be performed, which accelerates brake pad wear, leading to brake failure and a high risk of traffic accidents.

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DelSamantha

08/10/25 2:45pm

Ah, this question reminds me of my over ten years of driving experience. Many people think coasting in neutral saves fuel in fuel-injected cars, but that's actually a misconception. I've tested this on various car models, and coasting in neutral actually consumes more fuel. This is because, when coasting in gear, the engine is driven by the wheels, and the fuel injectors automatically shut off, resulting in almost zero fuel consumption. However, when coasting in neutral, the engine must maintain idle speed, continuously injecting fuel, which means burning extra fuel to keep running. The key to saving fuel is not to coast for too long and to use engine braking more often for deceleration. In terms of safety, coasting in neutral also increases the risk of losing control, extends braking distance, and slows reaction time in emergencies. I recommend developing the habit of simply lifting your foot off the accelerator when coasting without shifting to neutral—this saves money and ensures peace of mind. Over time, you can save a significant amount on fuel costs.

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