KR license plates on a car: full explanation, where they are and how to check

What are KR numbers and why are they more important than VIN?

Have you ever looked under the hood of your car or in the trunk looking for mysterious letter plates? KR? These metal nameplates are not just factory tags, but a key to the history of the car. Unlike VIN code, which identifies the vehicle as a whole, KR numbers (body, frame, engine) talk about each of its “parts” separately. They help to track whether the body was damaged after an accident, or whether the engine was replaced with a counterfeit one.

In Russia, since 2011, these numbers are required to be checked when registering with the traffic police. But even if you do not plan to re-register the car, knowledge KR numbers will protect you from buying a “damaged” car with a criminal record. For example, scammers often falsify VINs, but forget about the numbers on the frame or engine - and this is already a criminal offense. Next, we’ll figure out where to look for these numbers, how to read them correctly, and what to do if they don’t match the PTS.

Where are the KR numbers: detailed location map

Numbers KR (body, frame, engine) do not have a single standard for placement - their location depends on the make, model and even year of manufacture of the car. However, there are places where to look for them first. Let's start with the most obvious:

• 🚗 Body number: usually stamped on A-pillar (driver or passenger side), under the hood on partition between the engine compartment and the passenger compartment, or on doorway (if you open the door and look at the counter).
• 🔧 Engine number: search on cylinder block (most often on the top, closer to the windshield), sometimes on oil pan or block head. Diesel engines may have fuel pump.
• 🏗️ Frame number: relevant for SUVs and trucks. Knocked out on frame side members (front or back), sometimes on cross members.

On foreign cars the numbers are often duplicated on nameplates (metal plates) in the trunk, under the seats or on the door sills. For example, at Toyota body number may be on driver's door glass, and Volkswagen - on partition under the hood.

Car make	Body number	Engine number
VAZ (Lada)	On A-pillar or trunk floor	On cylinder block (front, under the hood)
Toyota	On driver's door glass or under the hood	On block head (above, closer to the cabin)
BMW	On engine compartment partition	On cylinder block (on the side, under the intake manifold)
Nissan	On doorway or under the driver's seat	On oil pan or front of the block

⚠️ Attention: On some models (for example, Mercedes-Benz or Audi) numbers can be hidden under plastic panels. If you can't find them, check with repair manual specific brand - there are usually layout diagrams there.

How to decipher KR numbers: what do the letters and numbers mean?

Unlike VIN code, which has a unified standard ISO 3779, numbers KR do not follow the same rules. Their format depends on the manufacturer, but there are general principles:

• 🔢 First 3–4 characters - usually a model or series code (for example, XTA at Toyota Corolla or 2110 at Frets).
• 📅 Next 2–3 digits - year of manufacture (can be encrypted with letters, for example, A=2010, B=2011).
• 🏭 Last 6–8 characters - a unique serial number assigned at the factory.

Example of body number decoding Toyota Camry: 4T1BF22KX5U123456:

• 4T1 - model code (Camry for the US market).
• B - body type (sedan).
• F22K - engine and transmission code.
• X5U - year of manufacture (X=2014, 5=month May, U=US plant).
• 123456 - serial number.

Engine and frame numbers often contain only the serial number without additional information - their main purpose is to confirm the originality of the part.

How to find out the year by letter in the KR number?

Most manufacturers use the Latin alphabet to encode the year (excluding I, O, Q). For example:

- A = 2010 (or 1980, depending on model)

- B = 2011 (or 1981)

-...

- J = 2019 (or 1989)

- K = 2020 (or 1990)

To accurately determine the year, check the manufacturer's table - for some brands the cycle repeats every 30 years.

Checking KR numbers: how to identify a fake or alteration

Number switching is one of the most common schemes used by scammers when selling damaged or stolen cars. To avoid running into problems, follow this algorithm:

1. Check the numbers with the PTS. All three numbers (body, engine, frame) must match the data in vehicle passport. If even one symbol does not match, this is a cause for concern.
2. Check visually. The original numbers are clearly stamped, without burrs or different fonts. Those who have been killed often have:
   • 🔍 Uneven edges of numbers.
   • 🎨 Traces of paint or putty around the number.
   • 📏 Different size or depth of characters.

Use a magnifying glass or flashlight. Under the angle of light, traces of the old stamp are visible on the broken numbers.

Check the history through the traffic police. Order extract from the register (via Public services or website traffic police) - all number changes are indicated there.

⚠️ Attention: If the seller refuses to provide access to the numbers (for example, “does not want to remove the crankcase protection” or “the trunk is jammed”), this is a clear sign of fraud. You should also be wary if the numbers too clean - they could have been polished to hide traces of intervention.

What to do if the KR numbers do not match the PTS

A number discrepancy is not always a death sentence, but it is almost always a problem. Here are possible scenarios and your actions:

Situation	Probable Cause	What to do
Engine number does not match	The engine was replaced with a contract one or after a major overhaul	Check the replacement documents (receipts, service station report). If they are not there, refuse to purchase.
Body number does not match	The body is broken after an accident or theft	Refusing the deal is a criminal offense (Article 326 of the Criminal Code of the Russian Federation).
Numbers are erased or unreadable	Corrosion or intentional damage	Contact the traffic police for restoration (an examination will be required).
The numbers match, but there are traces of alterations	Fraud (attempt to hide theft or interruption)	Submit a statement to the police to check the database of stolen cars.

If you have already purchased a car and find a discrepancy, you have two options:

1. Contact the traffic police to legitimize changes (if they are legal, for example, replacing an engine with permission).
2. Conduct an independent examination and sue the seller (if it is fraud).

In 2023, Russia tightened the punishment for falsifying KR license plates - now it threatens with imprisonment for up to 2 years (Article 326 of the Criminal Code of the Russian Federation).

How to check KR numbers online: services and databases

Before buying a used car, be sure to check the license plates KR through official and third-party services. Here are the most reliable sources:

• 📄 Traffic police (gibdd.rf): free check by VIN and body/chassis numbers. Shows registration history, accidents, restrictions.
• 🔍 Autocode (avtocod.ru): paid report with data on mileage, customs history, collateral obligations.
• 🚔 Stolen car database (MVD): checks whether the car is on the wanted list.
• 📊 CarVertical / Carfax: international databases for foreign cars (shows data from the USA, Europe, Japan).

⚠️ Attention: Some services (for example, Autocode) may not have up-to-date data on numbers engine or frame — they are checked only through the traffic police. Also be wary of “free” sites: they often sell your data or show outdated information.

Frequently asked questions about KR numbers: debunking myths

With numbers KR There are many misconceptions associated. Let's look at the most popular:

Myth 1: “If the engine number doesn’t match, but the car drives, everything is fine.”

Reality: Even if the car is running, a mismatch in the engine number is a violation Technical regulations of the Customs Union. At the next technical inspection or sale, you will be denied registration.

Myth 2: “You can restore the KR numbers yourself if they are erased.”

Reality: Independent “restoration” (for example, knocking out new numbers) is equated to counterfeiting. The only legal way is to contact the traffic police for an examination.

Myth 3: “KR license plates are not checked on foreign cars.”

Reality: In Russia they check everything numbers, regardless of brand. For example, during customs clearance Toyota or BMW body and engine numbers are checked with the manufacturer's data.

FAQ: Answers to pressing questions about KR numbers

Is it possible to drive if the engine number does not match the title?

Technically yes, but it's a violation. If stopped by a traffic police inspector, you face a fine of up to 2,500 rubles (Part 1 of Article 12.1 of the Administrative Code) or a ban on operation. To legalize an engine replacement, you need to:

1. Obtain a certificate from the traffic police about checking the license plates.
2. Pass inspection with a new engine.
3. Re-register changes in PTS.

What to do if the body number has been erased due to corrosion?

Contact expert organization, accredited by the State Traffic Safety Inspectorate. They will spend traceological examination and will restore the number using microtraces. You cannot restore it yourself - this amounts to a fake.

How to check if the KR license plates on a car are correct?

Inspect the rooms under good lighting and magnification. Please note:

• Different character depths.
• Traces of welding or putty nearby.
• The edges of the numbers are uneven (the original numbers are machine-stamped, so they are perfectly straight).

If in doubt, order forensic examination (costs from 3,000 rubles).

Can the traffic police refuse registration due to a mismatch of KR numbers?

Yes, refusal is possible for the following reasons:

• The numbers are unreadable or erased.
• There are signs of interruption.
• The numbers do not match the data in the PTS or the traffic police database.

In this case, an examination or restoration of documents through the court will be required.

Do I need to check the license plate numbers when buying a new car?

Even for a new car, it’s worth checking the license plates with the vehicle title - there have been cases when dealers, by mistake or intent, sold cars with non-original parts. This is especially true for:

• Cars brought from abroad (parallel import).
• Cars assembled at Russian factories from vehicle kits (for example, Hyundai or Kia from Kaliningrad).