What does 2.0L mean?

[MacEthan]

2.0L refers to an engine displacement of 2.0 liters. The volume of space through which the piston moves from top dead center to bottom dead center is called the cylinder displacement. If the engine has multiple cylinders, the sum of the working volumes of all cylinders is called the engine displacement, usually expressed in liters. Displacement is a specialized term in hydraulic transmission, referring to the volume of fluid inhaled or discharged per stroke or cycle. Engine displacement is one of the most important structural parameters, more representative of engine size than bore diameter and the number of cylinders. Many performance indicators of an engine are closely related to displacement. A larger displacement means the engine releases more energy per unit time, resulting in better power performance, which is why off-road vehicles and sports cars typically have relatively larger displacements.