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7 things about the VIN code that most drivers don't know

Back to blog 7 things about the VIN code that most drivers don't know
Guides & Fun Facts 2026-07-30 4 min

To most people, a VIN code is just a random string of 17 characters. You copy it from an ad, paste it into a search bar, get the car's history, and... forget about it. In reality, the VIN is one of the most intelligently designed identification codes in the automotive world. It doesn't just identify a specific vehicle – it can tell you where it was made, its model year, and in some cases even help spot a fraud. Here are seven facts worth knowing.

1. The VIN is the only thing that never changes on a car

License plates change. Owners change. The country where the car is registered can also change multiple times. However, the VIN remains the same from the day the car rolls off the factory floor until the day it is scrapped for parts. That is precisely why a car's history can be gathered using its VIN. It acts like its personal identification number – the single identifier that accompanies the car throughout its entire life.

2. You will never see three specific letters in a VIN code

Try opening your car's VIN. There is a high chance you will notice an interesting detail for the first time. The letters I, O, and Q are nowhere to be found. Not because manufacturers dislike them. They simply look too much like the numbers 1 and 0, so the decision was made long ago to discard them. The less room for error, the smaller the chance of misidentifying a vehicle. It seems like a small detail, but that is exactly how the whole system is built.

3. Until 1981, it was complete chaos

While every VIN today has exactly 17 characters, it wasn't always this way. Before 1981, every manufacturer used their own system. Some made VINs short, others made them long, and some followed their own custom rules entirely. If you tried to automatically check the history of a 1975 car today, you would quickly understand why it is so complicated. Only in 1981 was the VIN standardized worldwide. That was when the familiar 17-character structure came into existence.

4. The first three characters already reveal a lot

Just looking at the beginning of a VIN reveals where the car was manufactured and who made it. For example: W usually means Germany; J – Japan; S – United Kingdom; Y – Sweden or Finland; 1, 4, or 5 – United States of America. This doesn't mean the car spent its entire life in that country. However, that is where its history began.

5. One single character tells you the year of manufacture

The tenth character of the VIN indicates the model year. However, there is a catch. Those exact same characters repeat approximately every 30 years. Therefore, just by looking at a single letter, you cannot be one hundred percent sure whether the car was manufactured in 1994 or 2024. You need to evaluate the entire context – the model, production period, and other VIN data.

6. In some cars, the VIN "checks" itself

This fact is far less known. In many cars built for the US market, the ninth character of the VIN is a check digit. It is calculated using a special mathematical formula based on the remaining characters. If someone were to change a single number or letter in the VIN code, the check digit would no longer match. It serves as a clever mathematical fuse against errors and forgery. There is just one catch. In Europe, such a check digit is not mandatory, so many European cars do not have one. As a result, online VIN "decoders" don't always work seamlessly with cars produced in Europe.

7. Fraudsters sometimes steal the car's identity instead of the car itself

One of the most dangerous types of fraud is called VIN cloning. The scheme is simple. Criminals take the VIN code of a legally driving car and place it onto another vehicle – one that is stolen, heavily damaged, or otherwise problematic. On paper, everything looks legitimate. In reality, however, it is a completely different vehicle. That is why it is always worth checking the VIN not only in the documents. Compare whether it matches in all locations on the car where the manufacturer stamped it, and whether its history aligns with what you see in front of you. If the car tells one story and the VIN tells another, it is time to think very carefully.

In conclusion

Most people look at a VIN code as a random sequence of numbers and letters. In fact, it is one of the car's most important identifiers. It links technical specs, service history, registrations, technical inspections, and numerous other records that help you better understand a car's past. Next time you see those 17 characters, you'll know they are much more than just a code.

Got an eye on a specific car? Enter its VIN code on Autoistorija.lt and find out what story it holds.

Do not hesitate and learn as much as possible about the vehicle you are interested in.
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