How to Check a Car's Engine Number?

1 Answers
CorbinFitz
07/29/25 7:00pm
The engine number is generally located on the outer surface of the engine block, or on the car's nameplate or the nameplate inside the engine compartment. You can also check the engine number on the purchase invoice, the factory certificate, the operating permit for commercial vehicles, the vehicle purchase tax payment certificate, the registration records at public security authorities, or the vehicle insurance card. The simplest and most direct method is to look at the vehicle registration certificate or the car's driving license. The engine number is like a person's ID number, representing each vehicle. It contains very important information about the car. The engine model is an identification code assigned by the engine manufacturer according to relevant regulations, industry or company practices, and the engine's attributes. 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. Engines installed in passenger cars or multi-purpose vehicles must display the manufacturer's name, model, and production number as required. 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 multiple engines can share the same model. The engine number, however, is the production serial number of the engine, with each engine having a unique number. Structure of a car's engine number: Prefix: Includes the product series code, generation symbol, and regional or company code, chosen by the manufacturer as needed but subject to approval and filing by the industry standardization authority. Middle section: Consists of symbols for the number of cylinders, cylinder arrangement, stroke, and cylinder diameter. Suffix: Comprises symbols for structural features and usage characteristics. Tail: A distinguishing symbol. If differentiation is needed due to improvements or other reasons within the same series, the manufacturer selects an appropriate symbol. The suffix and tail can be separated by a hyphen.
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