What engine displacement is unaffected by air conditioning usage?

[Jonah]

An engine displacement around 2.0L is generally unaffected by air conditioning usage. Below is relevant information about automotive engine displacement: 1. Displacement and automobiles: The volume of space traversed by a piston moving from top dead center to bottom dead center is called cylinder displacement; if an engine has multiple cylinders, the sum of all cylinders' working volumes constitutes the engine displacement, typically measured in liters (L). Engine displacement is one of the most important structural parameters, representing engine size more accurately than bore diameter or cylinder count, with many engine performance indicators being closely related to displacement. 2. Displacement classification: China's passenger vehicle classification is determined by displacement size. Micro cars have displacements ≤1.0L; compact cars range 1.0-1.6L; midsize cars range 1.6-2.5L; executive cars range 2.5-4.0L; luxury cars have displacements >4.0L.