How to Check the Vehicle Engine Number?

1 Answers
HazelLee
07/29/25 7:58pm
The engine number is usually found on the outer surface of the engine block, or on the vehicle's nameplate or the nameplate inside the engine compartment. You can also check the engine number on the car purchase invoice, the factory certificate, the operating license for commercial vehicles, the vehicle purchase tax payment certificate, the registration record at the public security authority, or the vehicle insurance card. The simplest and most direct method is to look at the vehicle's administrative green book or the vehicle registration certificate. 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 production batch of the engine, including fuel type, number of cylinders, displacement, and static braking power, among others. Engines installed in passenger cars or multi-purpose passenger vehicles must be marked with the professional manufacturer's name, model, and production number as required. It's 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 product line, and multiple engines can share the same model. The engine number, however, refers to the production number of the engine, with each engine having a unique number. Composition of the vehicle engine number: Front part: Includes the product series code, generation symbol, and regional or corporate code. Manufacturers can choose the appropriate letters as needed, but these must be approved and recorded by the industry standard regulatory body. Middle part: Consists of symbols for the number of cylinders, cylinder arrangement, stroke, and cylinder diameter. Rear part: Composed of symbols for structural features and usage characteristics. Tail part: Distinguishing symbol. When differentiation is needed due to improvements or other reasons within the same product series, manufacturers can choose appropriate symbols. The rear and tail parts can be separated by a hyphen (-).
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