Why is a 9-digit engine number only showing 6 digits?

[AmirLee]

Engine numbers are assigned by the engine manufacturer, with each digit or letter having its specific meaning. There is no international standard for numbering. Typically, it consists of a combination of 7 to 8 digits and letters. Apart from the above method, the engine number can also be checked in the following 4 ways: The vehicle's driving license prints the engine number, usually located on the second last line; The motor vehicle registration certificate will state the engine number; The car purchase invoice will state the engine number; The vehicle purchase tax payment certificate will state the engine number. It's important to note that the engine number is not the same as the engine model. The engine model refers to the specification and size of the engine within the manufacturer's range, and engine models can be the same. The engine number refers to the production number of the engine, where each engine can only have one unique engine number, and each engine's number is different.