A green liquid is found under the front of a vehicle. Which fluid is most likely leaking?

The presence of a green liquid under the front of a vehicle typically indicates a leak of antifreeze, also known as coolant. Antifreeze is commonly colored green, although it can also come in other colors depending on the specific formulation. It plays a critical role in regulating engine temperature, preventing overheating, and protecting against corrosion in the cooling system.

When a vehicle is running, the coolant circulates through the engine and radiator, assisting in temperature management. If there is a leak, it can result in visible pools of green liquid beneath the vehicle, especially near the front where the radiator is located.

In contrast, gasoline has a clear or light amber hue, motor oil is usually dark brown or black, and water would be colorless and typically would not exhibit a distinctive color unless it's mixed with contaminants. Therefore, considering the color of the fluid and its typical location, antifreeze is the most accurate identification in this scenario.