When we talk about “car number,” in colloquial speech, rarely does anyone think about the accuracy of the wording. Drivers, buyers and even traffic police officers often use simplified names without going into legal details. However, in order to properly fill out documents, pass a technical inspection, or challenge fines, it is critical to understand the difference between the identifier visible on the bumper and the code hidden in the body.
An error in terminology can lead to oddities or, worse, legal problems when filling out purchase and sale agreements. Registration plate and identification number - these are two completely different concepts that absolutely cannot be confused. In this article we will analyze all the nuances of the automotive nomenclature.
Understanding that What is the correct name for the car number? in official documents will help you avoid unnecessary bureaucracy and quickly navigate the legal requirements. Let's figure out what's hidden behind the usual words.
Official name of the visible number
What in everyday life is usually called simply a “number”, “plate” or “piece of iron”, in the language of the law is called state registration mark (abbreviated as GRZ). It is this term that appears in the Vehicle Passport (PTS) and the Vehicle Registration Certificate (VRC). The use of the term "license plate" is acceptable, but less legally accurate in the context of modern regulations.
GRZ serves to visually identify a vehicle in traffic and link the car to a specific owner in the traffic police database. It is a metal plate with alphanumeric symbols, a country flag and a region code printed on it. It is important to understand that the sign itself is not the property of the owner, but is issued by the state for the duration of the vehicle’s operation.
⚠️ Attention: Unauthorized replacement of a state registration plate with an unreadable, modified or non-compliant GOST is an administrative offense and entails a fine or deprivation of rights.
There are several types of GRZ, depending on the category of the vehicle. For example, signs of reduced size are used for motorcycles, and paper or plastic analogues with a limited validity period are used for transit vehicles. Recently there have also been square numbers for cars imported from Japan and the USA, which have their own mounting and display features.
VIN code: main passport of the car
If the license plate can be changed when selling a car or at the owner’s request (for a fee), then VIN code (Vehicle Identification Number) remains with the vehicle forever, from production line to disposal. This is a unique 17-digit alphanumeric code that is stamped on the body or frame. The VIN is the main identifier in international databases and insurance policies.
Unlike the visible number, the VIN code contains encrypted information about the manufacturer, model, year of manufacture, engine type and even body color. Checking the car's history before purchasing is carried out exclusively based on this parameter. No other number will give such a complete picture of the vehicle's past.
The location of the VIN may vary depending on the make and model. Most often it can be found:
- 📍 On a metal plate in the engine compartment, attached to a glass or spar.
- 📍 At the bottom of the windshield on the driver's side (visible from the outside).
- 📍 On the central pillar of the body under the driver's doorway (on a sticker or stamped on metal).
- 📍 In the trunk under a mat or removable panel (relevant for some models BMW and Mercedes-Benz).
When buying a car, you need to check the VIN code in the documents with what is stamped on the body. Any traces of corrosion, tinting or changes in the thickness of the metal in the area where the number is stamped should alert the buyer, as this may indicate a criminal past of the car.
Engine number and other markings
Another important identifier is engine number. For a long time in Russia it was not required for registration, and if the engine was replaced with a similar one, this was not included in the documents. However, modern rules require that the engine number be indicated in the STS. This is done to combat theft and use of parts from stolen cars.
The engine number is usually stamped on the cylinder block in the area where it connects to the gearbox. It can be difficult to find due to access and contamination with oil or dirt. When undergoing a technical inspection or registration with the traffic police, the inspector may request verification of this number, especially if the engine model is subject to frequent thefts.
In addition, other markings may be present on the car:
- 🔧 Chassis number (relevant for frame SUVs and trucks).
- 🔧 Body number (for some Japanese cars, where VIN and body number are different things).
- 🔧 Factory tags on seat belts and windows with production dates.
⚠️ Attention: If the engine number is unreadable due to corrosion, you will need a certificate from the dealer or a forensic expert to confirm the originality of the unit. Without this, it will be impossible to register the car.
It is important to distinguish the engine number from the engine model. The model is often specified as an alphanumeric code (for example, 1ZR-FE or EJ20), which is embossed in a visible place. The serial number itself is usually longer and located in a less accessible place.
Comparison table of identifiers
To finally systematize the knowledge of how various numbers are correctly called, consider a comparative table. It will help you quickly navigate the differences between the main marking elements of the car.
| Parameter | GRZ (Government number) | VIN code | Engine number |
|---|---|---|---|
| Place of application | Removable metal plates front and back | Body, frame, engine compartment partition | Engine block |
| Changeability | Can be replaced upon sale or upon request | Unchangeable, assigned during production | Changes when replacing engine |
| Main purpose | Identification on the road, traffic control | Global identification, history, insurance | Powertrain identification |
| Where indicated in the documents | STS, PTS (in the column "Registration plate") | PTS, STS, OSAGO/CASCO Policy | PTS, STS (required from 2020) |
As can be seen from the table, The VIN code is the only unchangeable identifier that accompanies the car throughout its entire life, regardless of changes in owners, regions of registration or replacement of units. That is why when checking a car through online services, the request always begins with entering the VIN.
Understanding these differences helps not only in communicating with officials, but also when servicing the car yourself. When ordering parts, you will often use the VIN rather than the vehicle number. And when discussing fines with friends, it’s GRZ.
What to do if the VIN is damaged by corrosion?
If the VIN code on the body is heavily corroded and cannot be read, this is a serious problem. You need to contact a specialized expert bureau to conduct a forensic examination. The expert will establish the authenticity of the number and issue a conclusion with which you can contact the traffic police to make changes or restore the marking. Self-cleaning or touch-up is prohibited!
Legal aspects and placement rules
The rules for installing state registration plates are strictly regulated by GOST R 50577-2018. Violation of these rules may result in fines. The sign must be installed in the designated place, horizontally, without distortion. The use of frames that cover part of the letters, numbers or flag is prohibited.
A clean license plate is also a legal requirement. If the traffic police inspector decides that the license plate is covered with dirt on purpose (to hide it from the cameras), he has the right to issue a fine. Although this is more lenient in winter, basic readability should be maintained.
Owners of cars with non-standard mounts (for example, American or Japanese cars with square niches) should be especially careful. Installing a rectangular Russian license plate in a place intended for a square one, using adapters or bending, may be considered a violation of the installation rules.
When purchasing frames for license plates, choose models with a larger window for the flag and region to ensure compliance with GOST, even if the sign moves slightly inside the frame.
It is also worth remembering legality of acquisition numbers. Buying “nice” license plates secondhand through car resale is formally possible, but requires caution. Transferring the rights to use such a number without an official deregistration and registration procedure is a gray area and can lead to loss of money.
Common errors in terminology
In everyday speech, drivers often make terminological errors, which, however, are understandable to all road users. For example, the phrase “check by number” usually means checking by VIN code, and not by visible license plate number. The databases are designed in such a way that the key to the history is the VIN.
Another common mistake is confusion between the “technical passport” and the “PTS”. A vehicle passport (PTS) is a document for the car itself (like its “birth certificate”), and a Registration Certificate (CRC) is a document for a specific owner at the current moment. In both documents, the numbers are called the same, but their status is different.
Using terms incorrectly can create confusion when communicating with insurance agents. If you say that your number is “burnt”, meaning VIN, you may be misunderstood or misunderstood. Always clarify: we are talking about a piece of hardware (GRP) or a “code stamped in the body” (VIN).
☑️ Checking documents before buying a car
FAQ: Answers to frequently asked questions
Is it possible to drive without a license plate on the first day after purchase?
No, you cannot drive without license plates. When you buy a car, you can receive transit plates (if you buy from a dealer or in another region) or you must immediately install permanent plates. Driving without a license plate entails a fine of 5,000 rubles or deprivation of rights for a period of 1 to 3 months.
What to do if your license plate is stolen?
You must immediately contact the police to file a report of theft. With a notification coupon from the police, you need to go to the traffic police to obtain duplicate license plates. Driving with a stolen number plate (leaving one plate) or a homemade replacement is prohibited.
Is it possible to change the VIN code of a car?
The VIN code cannot be replaced. It is “sewn into” the body structure during production. If the entire body is replaced (for example, after a serious accident), changes are made to the title indicating the new VIN, but the old code remains in the car’s history. Attempting to change a stamped number is a criminal offence.
Is it necessary to register the replacement of an engine with a similar one?
Yes, starting from 2020, replacing an engine requires changes to the PTS and STS, even if the engine model remains the same. The new engine number must be included in the documents. This rule came into force to improve control over the turnover of units.
Knowing the exact terminology (registration number, VIN, engine number) is not just bureaucracy, but a way to protect your rights as an owner and avoid problems with the law during transactions and inspections.
In conclusion, it is worth noting that a car is a complex technical and legal device. Each element has its own name and purpose. Understanding that What is the correct name for the car number? in a variety of contexts, makes you a more competent road user and a confident vehicle owner.