What is the fuel consumption difference between 1.5 and 2.0 engines?

[DelMaverick]

1.5L and 2.0L displacement engines typically differ by approximately 2.5 liters per 100 kilometers. Below is relevant information about automobile displacement: 1. Cylinder working volume: Displacement refers to exhaust volume. Cylinder working volume means the volume swept by the piston moving from top dead center to bottom dead center, also called single-cylinder displacement, which depends on cylinder bore and piston stroke. Engine displacement is the sum of all cylinders' working volumes, generally expressed in liters (L). 2. Displacement classification: Micro cars have displacement ≤1.0L; compact cars range 1.0-1.6L; mid-size cars range 1.6-2.5L; executive cars range 2.5-4.0L; luxury cars have displacement >4.0L.