
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. The simplest and most direct method is to check the vehicle's green book (registration certificate) or the vehicle's driving license. The engine number, like a person's ID number, represents each vehicle and contains very important information about the vehicle. The chassis number is stamped on the vehicle's frame. The exact location varies by manufacturer, so you can refer to your vehicle's user manual. The engine model is an identification code assigned by the engine manufacturer in accordance with relevant regulations, corporate or industry practices, and the attributes of the engine. It represents the manufacturer, specifications, performance, features, technology, purpose, and production batch of the engine, including details such as fuel type, number of cylinders, displacement, and static braking power. Engines installed in passenger cars or multi-purpose vehicles are required to display the professional manufacturer's name, model, and production number. The chassis number, commonly referred to as the Vehicle Identification Number (VIN), is a unique code assigned by the manufacturer to identify a vehicle. The VIN consists of 17 alphanumeric characters, also known as the 17-digit identification code, chassis number, or 17-digit number. The arrangement of the VIN ensures that no two vehicles of the same model will have the same number within 30 years, making it a unique identifier for the vehicle, often referred to as the "car's ID." Common locations for the VIN include the driving license and the lower left side of the vehicle's front windshield. 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, is the production number assigned to each individual engine, making it unique to that specific engine. Engine Number Composition: Prefix: Includes product series code, generation symbol, and regional or corporate code, chosen by the manufacturer and approved by the relevant 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 intended use. Tail: A distinguishing symbol used to differentiate between improved versions or other variations within the same series, separated by a hyphen if necessary. The chassis number (VIN) consists of 17 characters divided into three parts. Part 1: WMI—World Manufacturer Identifier (positions 1-3); Part 2: VDS—Vehicle Descriptor Section (positions 4-9); Part 3: VIS—Vehicle Indicator Section (positions 10-17).

Having driven for over a decade, locating the engine number and VIN is an old topic. The VIN is most prominently displayed at the bottom left or right corner of the windshield, easily visible from outside the vehicle; alternatively, it's printed on a label on the driver's side door frame. The engine number is trickier—you'll need to pop the hood and locate the engraved spot on the engine block, usually on the top or front face. For common models like Volkswagen, it's typically stamped on a small metal plate near the engine. These numbers are essential for procedures like ownership transfers or insurance claims, so it's wise to record or photograph them in advance to avoid last-minute scrambling. Additionally, they're printed on the vehicle registration certificate and insurance policy—check those documents if you can't find them, saving time and effort.

As a car enthusiast, I find it quite interesting to locate these numbers! The VIN is conveniently visible at the corner of the windshield, while the engine number requires some hands-on exploration in the engine bay. I often use my phone's flashlight to illuminate the area during the search – their locations vary by model, like Ford vehicles which usually have a label on the inner side of the hood. Inputting the VIN in apps to check vehicle history is incredibly useful in daily life. Regular practice helps you remember the process, avoiding embarrassment during inspections. When the engine gets dirty, just clean it up – shiny numbers become instantly legible, and sharing these findings with fellow car lovers makes for endless fun and knowledge exchange.

With my extensive experience in car repairs, I can spot these numbers at a glance. The engine number is engraved on the surface of the engine block, with the exact location varying by model—usually near the front of the engine. The VIN (Vehicle Identification Number) is fixed beside the windshield or on the door pillar. I recommend cleaning any engine grime and polishing the area for better readability before checking. If the numbers are too faint, refer to the vehicle manual or registration documents.


