Finding a Vehicle Identification Number is one of the first tasks a car owner faces when registering, selling, or checking a vehicle's history. There is often confusion between the concepts VIN code and body number, although in the modern automotive industry this is usually a single 17-digit identifier. Knowing the exact location of these markings is critical to preventing you from purchasing a stolen or mis-plated vehicle.
The vehicle number is a unique code that is assigned to the manufacturer and contains information about the country of production, plant, model, year of manufacture and configuration. Unlike the engine number, which can change during the life of the car, this identifier remains with the car until it is scrapped. That's why traffic inspectors and insurance agents always require its exact indication in documents.
There are several main places where the manufacturer is required to place this information: on a metal plate (nameplate) in the engine compartment, on the driver's side body pillar, and also in registration documents. However, unscrupulous sellers may try to hide real data, so it is important to be able to find all duplicate markings, including hidden embossing on the frame or interior elements.
The difference between the VIN code and the body number in documents
Many car owners mistakenly believe that the chassis number and VIN are different things, and often look for them in different places. In fact, for the vast majority of modern cars manufactured after 1980, these concepts are synonymous. VIN (Vehicle Identification Number) is an international standard that has completely replaced the old numbering systems. In documents such as PTS or STS, this 17-digit code is indicated today in the “Body number” column.
However, there are exceptions typical for some Japanese and American cars of the late last century. They could have a separate short body number, which did not carry complete information about the configuration, and a separate VIN for export. If you own a rare retro car or vehicles from Japan in the 90s, the “Vehicle Model” column may indicate a body code other than the VIN. In such cases, a long identifier is still used to check history through online services.
It is important to understand the structure of the code to avoid errors when entering data on verification sites. It consists of three parts: WMI (manufacturer code), VDS (vehicle description) and VIS (distinctive part). An error in even one character will result in the system displaying data for a completely different vehicle. Therefore, when copying data from the nameplate, always double-check the symbols “0” and “O”, “1” and “I”.
⚠️ Warning: Never use photos of license plates from the Internet to check a vehicle's history. Attackers often publish ads with other people's VIN codes in order to hide the real history of the car being sold. Always check the number on the body with the number on the PTS in person.
When purchasing a used car, be sure to check the license plate number PTS with a number on the body. Even a minimal discrepancy in one digit can cause a refusal to register with the traffic police. Police officers are extremely alert to signs of document falsification or alteration of markings.
Physical search for license plates on the car body
Manufacturers are required to apply the identification number in several places to ensure its safety even if one of the zones is damaged. The most common place is a metal plate located in the engine compartment. Usually it is mounted on the shock absorber, on the partition between the engine and the passenger compartment, or on the mudguard. This plate, in addition to the VIN, often indicates the gross vehicle weight and permissible axle loads.
The second standard location, which is easily accessible without opening the hood, is located at the bottom of the windshield on the driver's side. The number is stamped on a metal plate that is visible from the outside through the glass. This was done specifically to simplify the work of road service employees and parking security systems. However, it is worth remembering that this plate is the easiest for scammers to replace, so you cannot rely on it alone.
- 🚗 Body pillar: Open the driver's door and look at the B-pillar (between the doors). Often there is an information sticker pasted there or a number stamped directly on the metal.
- 🔧 Thresholds and floor: For some models (for example, certain versions Volkswagen or BMW) duplicate markings may be located under the front passenger's carpet or on the threshold.
- 🏎️ Frame SUVs: If you have a frame car, the primary number is often stamped directly onto the frame rail, usually on the front right side, which may require removal of the wheel or guard to access.
Particular attention should be paid to cars that have undergone serious body repairs. If you see that the plate is glued to the sealant, has traces of corrosion underneath, or the numbers are embossed in an uneven font, this is a reason for a detailed examination. Factory markings are carried out using a laser or impact method with high precision and are always protected with a special varnish.
If the metal plate in the engine compartment is very dirty, do not scrub it with a rough brush. Use contact cleaner or WD-40 and a soft cloth to avoid damaging the protective layer and erasing the numbers.
Checking the vehicle number through electronic documents
The fastest and safest way to find out the vehicle number is to look at the official documents for the car. The main document is the Vehicle Passport (PTS). In the paper version, the body number (VIN) is indicated in column No. 3, and in the electronic PTS (EPTS) this data is available in the owner’s personal account on the portal of the electronic passport system. Data in EPTS is cryptographically protected and has the same legal force.
The Vehicle Registration Certificate (VRC) is a document that the driver should always have with him. In the new STS plastic card, the body number is indicated on the front side, usually at the bottom. In the old pink paper certificates, the information was also in the corresponding column. It is important that the number in the STS completely matches the number in the PTS; any discrepancies indicate that one of the documents is invalid or issued in error.
Information can also be found in the insurance policy OSAGO or CASCO. The policy specifies the VIN number of the vehicle that is covered. This is useful if the documents for the car are lost, and the car itself is not available for inspection (for example, it is in an impound lot). However, the data from the policy is not suitable for official procedures, since they are entered according to the applicant’s words and may contain typos.
| Document | Room location | Data reliability |
|---|---|---|
| PTS (paper) | Column 3 “Body number” | High (main document) |
| EPTS | Extract from the system, personal account | Maximum (digital register) |
| STS (plastic/paper) | Front side, VIN column | High (issued by the traffic police) |
| OSAGO policy | Section "Vehicle" | Medium (input errors are possible) |
If you find an error in the documents, you must immediately contact the traffic police or the insurer to make corrections. Driving with documents in which the body number is not readable or contains corrections that are not certified by a seal can lead to the detention of the car and its placement in the impound lot.
Using diagnostic scanners and OBD-II
For modern cars, saturated with electronics, there is a digital way to check the vehicle license plate number, which does not require a physical search for plates. VIN information is stored in the engine control unit (ECU) and transmitted through the diagnostic connector OBD-II. This allows the number to be read even if all external plates are destroyed or replaced, although if the “brains” of the engine are replaced, the data may be changed.
To read the information you will need an adapter (for example, ELM327) and a smartphone with a diagnostic application installed, such as Torque, OpenDiag or CarScanner. By plugging the adapter into the connector (usually located under the steering wheel on the left), you can request vehicle identification data. This method is especially useful when buying a car to quickly compare the “digital” VIN with the one stamped on the body.
Request mode 09, PID 02 (Request VIN)
ECU response: 49 02 01 [VIN CODE]
It is worth noting that not all control units can provide this information via standard protocols. Some manufacturers such as BMW or Mercedes-Benz, use secure protocols and may require a professional dealer scanner to read the VIN. In addition, on very old cars (before 2000), this function may be completely absent.
⚠️ Attention: If during diagnostics the scanner shows a VIN code that differs from the number on the body and in the documents, this is a sure sign that the engine control unit was taken from another car. Such a car requires a thorough examination by criminologists.
Hidden markings and duplicate numbers
In the fight against theft, automakers are introducing a system of hidden markings. These are additional printed numbers, the location of which is not advertised and is known only to the plant and law enforcement agencies. They can be located on the inner surfaces of the side members, under the interior trim, on suspension elements, or even inside the headlights and taillights. It is almost impossible to detect them without completely disassembling the car.
There are also so-called “check digits” or hidden marks applied by invisible varnish or microparticles. To identify them, an ultraviolet lamp or special reagents are used. The presence of such marks is often indicated in the service book or on a special owner’s card that came with the car. Checking these marks is the job of professionals during in-depth pre-sale preparation.
- 🔍 Risk areas: Most often, hidden numbers are looked for on the partition of the engine compartment, hidden from view when the hood is closed.
- 🛡️ Protective film: Some brands put the VIN under a protective anti-gravel film on the sills, which cannot be removed without damage.
- 📷 Photo recording: During production, many factories take photos of the chassis with clearly visible numbers, which theoretically can be requested from the dealer, although in practice this is difficult.
If you are planning to purchase an expensive or rare car, it makes sense to order a “search for hidden markings” service at a specialized center. Experts know exactly where on a specific model Audi, Toyota or Lexus the manufacturer hides duplicate codes, and they can confirm the cleanliness of the body in 30-40 minutes.
What to do if the body number is rotten?
If the area with the body number is severely corroded and the numbers are not readable, operation of the vehicle is prohibited. You will need to undergo an examination by the traffic police, which will confirm that the number was destroyed by rust and not cut off. After this, the documents will be marked “Corrosion”, which will allow you to legally use the car, but it will be more difficult to sell it.
Online services for checking by number
Knowing the vehicle number, you can get extensive information about its history without leaving home. The official website of the State Traffic Safety Inspectorate of the Russian Federation allows you to check your car for free for participation in an accident, being on the wanted list and the presence of restrictions on registration actions. To do this, just enter the body number or VIN in the appropriate form on the portal.
There are many commercial aggregators (Avtotek, ProAvto and others) that collect data from various sources: reports on repairs at dealerships, mileage history from service books, data on working in a taxi. These reports are paid, but they often reveal incorrect mileage or facts of using the car for commercial purposes, which critically affects the price.
When using online services, be careful: enter the number without extra spaces or dashes, although most modern systems automatically format the input. If the system gives the error “Number not found,” double-check the symbols. The letter "B" and the number "8", or "Q" and "0" are often confused. Input accuracy is the key to obtaining correct results.
☑️ Check before purchase
A comprehensive check through online services using the VIN code allows you to weed out up to 80% of problem cars even before a personal inspection, saving time and money for a potential buyer.
Is it possible to find out the vehicle number by the license plate number?
It is impossible to officially find out the VIN code only by the car number (state registration number) through open databases. This is done for security purposes and to protect personal data. However, there are unofficial databases and assistant applications (for example, “OSAGO Assistant”) that can show the VIN if the car was involved in an accident, and data about this incident is in the general database of insurers. But there is no guaranteed way.
What to do if the numbers on the body and in the title differ by one digit?
Most likely, this was a mistake by the traffic police during initial registration or entering data. You need to contact the department where the PTS was issued with a request to correct the error. Until the error is corrected, you will not be able to sell the car or pass inspection. In rare cases, this may indicate a “double” - a stolen car with a different number plate.
Where is the VIN located on motorcycles?
On motorcycles, the number is stamped on the steering column (frame tube), usually on the right side. It is also duplicated on a metal plate, which can be mounted on the frame under the seat or on the pendulum. On modern scooters and motorcycles Yamaha, Honda The number is often located vertically on the front of the steering column, just below the steering wheel.
How to read the year of manufacture from the VIN code?
The year of manufacture is encoded in the 10th character of the VIN code. For example, the letter “L” means 2020, “M” - 2021, “N” - 2022. However, this code is cyclical and repeats every 30 years, so to accurately determine the year you need to know the decade code (usually the 7th character) or the context of the model. For 2026-2026 vehicles, the symbols R, S, T are used respectively.