Can the VIN number tell you what size engine is in a car?

No, a VIN number does not directly tell you the engine size. While the VIN contains information about the vehicle's make, model, year, and manufacturing plant, the specific engine details (like displacement) are usually not encoded within it. You'll need to check the vehicle's documentation (owner's manual, registration) or the vehicle itself (engine block or sticker under the hood) to find the engine size.