For every vehicle owner or potential buyer of a used car, the issue of transparency of history and legal purity is a priority.
The document of primary importance here is Vehicle registration certificate (STS), which contains key machine identifiers.
It is this data that allows you to conduct a deep check through the official traffic police databases and commercial services, identifying incorrect mileage, participation in an accident, or the presence of restrictions on registration actions.
Many motorists mistakenly believe that the STS is only needed for presentation to the inspector, but this plastic document hides a lot of technical and legal information available for analysis.
What is STS and what data does it contain?
A vehicle registration certificate is a standard document confirming ownership and the fact that the vehicle is registered with the state.
Unlike the PTS (Vehicle Passport), which is more of a technical passport and is kept at home, STS must always be in the car along with your driver's license.
On the front side of the document there are basic identification data, including the state registration plate, VIN code (vehicle identification number), make, model and category of the vehicle.
The year of manufacture, body color, engine size and power, as well as the weight of the vehicle without load and with a permissible maximum weight are also indicated here.
The reverse side of the document contains information about the current owner (full name and registration address), the date of issue of the certificate and special notes, which may include information about restrictions or design features.
It is important to understand that the data in the STS must fully correspond to the data in the PTS and the actual condition of the car; any discrepancies can lead to serious problems during sale or technical inspection.
⚠️ Attention: If you find a discrepancy between the body color or engine number in the STS and the real car, immediately contact the traffic police to make changes, otherwise the car may be impounded.
Always keep the CTC in a protective case, but do not laminate it, as this will invalidate the document due to the inability to verify the security elements.
Where to find the STS number and how to use it for verification
The vehicle registration certificate number is a unique identifier of a specific document form, assigned upon its issuance at the registration department.
You can find this number on the front side of the plastic, it is marked as Series and number and usually consists of two letters, six numbers and two more letters (for example, 77 AA 123456).
This detail is necessary for checking a car on the traffic police website, as it allows you to request information about whether the car is wanted or whether there are prohibitions on registration actions without knowing the VIN code, although the combination of VIN + STS number gives the most accurate result.
Using the STS number is especially important when buying a car, when the seller has not yet arrived for the meeting, but is ready to dictate the document data for the initial check.
There is a misconception that using the STS number you can find out the personal data of previous owners, however, legislation on the protection of personal data strictly prohibits the disclosure of such information to third parties.
To carry out the check, you need to go to the official traffic police portal or use specialized applications where the series and number of the document are entered in the appropriate fields.
The system will automatically generate a request to the database and provide results about the status of the vehicle, the presence of an accident and the passage of technical inspection.
Interpretation of special marks in the certificate
The “Special Notes” section in the STS is intended to include additional information that is not included in the main columns, but is legally significant.
Most often here you can find an entry about the category of the vehicle (for example, B, C, D), as well as information about the environmental class of the car, which is especially important for car owners planning to enter zones with limited environmental access.
This section also includes data on changes to the design of the vehicle, for example, installing gas equipment (LPG) or replacing the engine with a unit with different characteristics.
If the car is pledged to the bank, special marks may contain a corresponding entry, which makes it impossible to carry out registration actions without the consent of the pledge holder.
| Code/Record | Meaning | Impact on Operation |
|---|---|---|
| HBO | Gas equipment installed | Regular security check required |
| Bail | The car is pledged to the bank | Cannot sell without repaying the loan |
| Customs | Information about customs clearance | Confirmation of legality of import |
| Eco class | Euro-4, Euro-5, etc. | Restrictions on entry into city centers |
The absence of records of design changes, if they actually exist, is grounds for refusal to undergo technical inspection and cancellation of registration.
Owners should carefully study this section when receiving a new STS to ensure that the data entered by the inspector is correct.
What to do if there is an error in special marks?
If you notice an error in special marks immediately upon receipt of the document, request that it be corrected on the spot. If the error is discovered later, you will have to write an application to replace the STS and go through the procedure for making changes again, paying the state fee.
How to check a car's history using the VIN code from STS
VIN code (Vehicle Identification Number) is a 17-digit alphanumeric code that is a unique “passport” of the car and contains information about the manufacturer, year of manufacture and configuration.
Knowing the VIN code indicated in the STS, you can get the most complete picture of the car’s history, including data on repairs, insurance claims and mileage.
There are several verification methods: free (official website of the State Traffic Safety Inspectorate, website of the Chamber of Notaries for checking collateral) and paid (commercial services that aggregate data from many sources).
Paid reports often contain information about the car’s performance in a taxi, the number of owners according to the title, calculations for repair work, and even photographs from accident scenes.
When checking the VIN code on the car body and in the documents, pay attention to the absence of signs of tampering, overcooking or changing the numbers, which may indicate a “designer” or stolen car.
⚠️ Attention: Never buy a car if the VIN code on the body has traces of corrosion, is unreadable or differs from the data in the STS even by one digit.
For a professional assessment, it is recommended to use a comprehensive check, which includes not only the traffic police database, but also data from insurance companies and dealerships.
This approach allows us to identify incorrect mileage, which is often not recorded in government databases, but remains in the service history.
☑️ Check by VIN code
Recovering STS data if lost or damaged
Loss or damage to a vehicle registration certificate is an unpleasant situation that requires an immediate response, since operating a vehicle without a valid vehicle registration certificate is prohibited.
To restore the document, you must contact any traffic police department with an application, the owner’s passport and documents confirming ownership (PTS, purchase and sale agreement).
The procedure for restoring STS data does not require re-passing a technical inspection of the car if less than a certain period has passed since the last registration and the design of the car has not changed.
If a document is lost, it is also recommended to file a loss report with the police in order to protect yourself from possible fraudulent activities with your STS number, although in practice this is rarely done.
The cost of issuing a duplicate STS consists of the state fee for issuing the document and, if necessary, making changes to the registration data.
A temporary driving permit to replace a lost vehicle license is not currently issued, so the vehicle cannot be operated until a new document is received.
The production time for a duplicate usually ranges from one hour to one working day, depending on the workload of a particular MREO unit.
It is important to make an appointment in advance through the State Services portal to avoid queues and speed up the process of obtaining a new document.
If you lose your STS, you do not need to re-register the car or change the license plates; it is enough to get a duplicate document with the same data.
Electronic STS: features and status in 2026
In modern automobile legislation, the concept of an electronic vehicle passport (EPTS) and an electronic registration certificate (ECTS) is being actively introduced.
The electronic format allows you to store all data about the car in a single digital database, which simplifies the purchase and sale procedure and reduces the risk of loss or damage to paper media.
Owners of ECTS can confirm their rights to drive and own a car through a special mobile application by presenting a QR code to the inspector.
However, despite digitalization, the paper version of the STS still retains its legal force and is issued at the request of the owner or in the absence of the technical ability to issue an electronic analogue.
The transition to electronic documents requires car owners to have a smartphone with an installed application and stable access to the Internet to display data.
The electronic STS system is integrated with the databases of insurance companies, which should theoretically simplify the process of registering compulsory motor liability insurance and comprehensive insurance.
⚠️ Attention: Even if you have an electronic STS, when traveling abroad you will most likely need a paper version of the document or a notarized extract, since international standards may differ.
The technical implementation of ECTS implies a high level of data protection from unauthorized access and changes, which increases the reliability of storing information about the car.
In the case of selling a car with ECT, the procedure for changing the owner is faster, since the stage of physically filling out and handing over paper forms is eliminated.
Is it possible to exchange a paper STS for an electronic one?
Yes, during any registration action (change of owner, replacement of rights) you can declare your desire to receive an ECT instead of a paper document, however, it is not yet possible in all regions to completely abandon paper in favor of only digital ones.
Frequently asked questions (FAQ)
Is it possible to find out the owner of a car by its STS number?
No, information about the owner’s personal data (full name, address, telephone) is confidential and protected by law. Only law enforcement officers and the owner himself have access to it upon presentation of documents.
What to do if the data in the STS and PTS do not match?
You must contact the traffic police to make corrections. Operating a vehicle with discrepancies in documents is prohibited and may result in a fine and detention of the vehicle.
How long does the STS last?
The registration certificate does not have an expiration date; it is valid indefinitely until the car is sold, disposed of, or changes in design characteristics require changes to the documents.
Do I need to take my PTS with me if I have an STS?
No, the PTS (Vehicle Passport) is a document to keep at home. To drive a car and confirm ownership during verification, a vehicle registration certificate and a driver’s license are sufficient.
How to check if STS is wanted?
It is impossible to check the status of the STS form itself separately, but you can check the car by VIN code or STS number on the traffic police website in the “Vehicle check” section, where the search status of the vehicle itself will be indicated.