Where to Find the Complete Engine Number?

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The engine number is generally located on the outer surface of the engine cylinder block, or on the vehicle's nameplate or the nameplate inside the engine compartment. You can also find the engine number on the car purchase invoice, the factory certificate of compliance, the operating permit for commercial vehicles, the vehicle purchase tax payment certificate, the registration records at the public security authority, the vehicle insurance card, or the simplest and most direct method is to check the vehicle registration book or the vehicle's driving license. The engine number is like a person's ID number, representing each vehicle. It contains very important information about the vehicle. The engine model is an identification code assigned by the engine manufacturer according to relevant regulations, corporate or industry practices, and the attributes of the engine. It represents information such as the manufacturer, specifications, performance, features, technology, purpose, and batch of the engine, including fuel type, number of cylinders, displacement, and static braking power. Engines installed in passenger cars or multi-purpose passenger vehicles are required to indicate the professional manufacturer, model, and production number of the engine. It is important to note that the engine number is not the same as the engine model. The engine model refers to the specifications 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, with each engine having a unique number that cannot be duplicated. Composition of the vehicle engine number: First part: Includes the product series code, generation symbol, and local or corporate code, which are selected by the manufacturer as needed and must be approved and filed by the industry standardization unit. Middle part: Consists of the cylinder number symbol, cylinder arrangement symbol, stroke symbol, and cylinder diameter symbol. Rear part: Composed of structural feature symbols and usage feature symbols. Tail part: Distinguishing symbol. When differentiation is needed due to improvements or other reasons within the same product series, the manufacturer selects appropriate symbols, and the rear and tail parts can be separated by a hyphen.