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

[JanelleDella]

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 vehicles: When starting a fuel-injected engine, it is generally unnecessary to press the accelerator, as fuel-injected engines are equipped with cold-start enrichment and automatic fast idle functions, ensuring smooth engine start whether the vehicle is cold or warm. 2. Disadvantages of fuel-injected vehicles: When going downhill, releasing the accelerator reduces the generator's load, putting the vehicle in a "coasting" state. At this point, the fuel injection system automatically reduces fuel output. If neutral coasting is selected, the engine remains in idle mode, and fuel consumption does not decrease significantly. 3. Hazards of fuel-injected vehicles: With the gear lever in neutral, engine braking is not possible, accelerating brake pad wear and potentially leading to brake failure, which can easily cause traffic accidents.

[MacDallas]

Having repaired cars for over 20 years, I've noticed many drivers of fuel-injected sedans tend to coast in neutral, thinking it saves fuel. In reality, this is a major misconception. The fuel injection system is controlled by an intelligent computer. When coasting in gear with vehicle speed above idle, the computer automatically cuts off fuel injection - the engine simply rotates driven by the wheels, consuming almost zero fuel. But in neutral, the engine must maintain idle speed, continuously consuming fuel, which is actually wasteful. This differs from old carburetor vehicles, as fuel injection technology is far more efficient. Prolonged neutral coasting may also increase engine carbon buildup and wear, reducing smoothness. I suggest drivers test this: observe the instant fuel consumption display - it drops to zero when coasting in gear, but can't go that low in neutral. Combined with anticipatory driving techniques like early gear engagement and throttle lift-off, this can save about 5% in fuel costs while being environmentally friendly. Developing this habit will noticeably improve your fuel expenses.

[MollyMarie]

As an energy-conscious driver, I've personally tested multiple times that coasting in neutral in fuel-injected cars is far less fuel-efficient than coasting in gear. The onboard computer intelligently shuts off the fuel injectors when detecting sufficient wheel speed during gear coasting, burning zero fuel. Neutral coasting? The engine still consumes idle fuel, wasting about 10% energy. My OBD tool recorded zero instantaneous fuel consumption during gear coasting - the longer the coast, the greater the savings. After comparison, I abandoned neutral coasting and now save two tanks monthly. Fuel injection technology is designed for efficiency - no need for outdated methods. Combined with early throttle release and smooth driving, my overall fuel consumption dropped significantly. Choose gear coasting - eco-friendly and economical.

[CatherineFitz]

I drive my fuel-injected car for business every day, and high fuel consumption is my pain point. I tried coasting in neutral, but it didn't make much difference in fuel economy. Later, I learned that the car's computer automatically cuts off fuel injection when in gear, which is more effective for saving fuel. Coasting in neutral means the engine is still idling and burning fuel, which is a waste of money. Stop using outdated tricks—coasting in gear is the right way. A simple change in habit will make your wallet thank you. By the way, it's also safer, as the engine helps with braking when slowing down.