* Vehicle's documentation: This is the most reliable method. Check your vehicle's owner's manual, registration papers, or the manufacturer's website. The engine displacement will be clearly stated.
* Engine block: The engine block itself may have the displacement cast or stamped onto it. However, this requires knowing where to look and often involves some searching. The location varies wildly between engines and manufacturers.
* Vehicle identification number (VIN): You can sometimes use the VIN to decode the engine specifications, including displacement, using online VIN decoders or contacting a vehicle history service. However, this isn't always reliable and depends on the availability of comprehensive data for your specific vehicle.
* Online resources: If you know the make, model, and year of the vehicle, you can search online (e.g., Google, car forums) for the engine specifications. Be aware that this information may not always be accurate.
In short, don't try to calculate it; look it up. The manufacturer knows the exact displacement and provides this information.
