How much water does an car engine block hold?

The amount of water an engine block can hold varies significantly depending on the size and design of the engine. As a rough estimate, a typical 4-cylinder engine block might hold around 5 to 7 liters (1.3 to 1.8 gallons) of water, while a larger V8 engine block could hold upwards of 10 to 12 liters (2.6 to 3.2 gallons) or more. The exact water capacity of an engine block can be found in the vehicle's owner's manual or by consulting with a qualified mechanic.