VIN Number - What It Is, Where to Find It and How to Check a Car History

The seller says: "no accidents, one owner, full service history". How do you verify that without driving out to see the car? All you need is 17 characters - the VIN number.

What is a VIN number

VIN (Vehicle Identification Number) is a unique vehicle identifier, mandatory since 1981 in Europe and the USA. It consists of exactly 17 characters and is not repeated worldwide for at least 30 years.

Each section carries specific information:

• Characters 1–3 - manufacturer code (e.g. WBA = BMW, WVW = Volkswagen, WAU = Audi)
• Characters 4–8 - model, engine type, trim level
• Character 9 - check digit (detects fake VINs)
• Character 10 - model year (e.g. G = 2016, H = 2017, J = 2018)
• Characters 12–17 - serial number from the production line

This isn't bureaucracy. The VIN is a car's passport - every database in the world uses it to record damage claims, thefts and warranties.

Where to find the VIN in a car

Every car has the VIN in at least two places. Always check both - if they differ, that's a serious red flag.

1. Lower edge of the windshield - visible from outside on the driver's side. The hardest to forge.
2. Driver's door pillar - sticker or stamping on the frame
3. Engine bay nameplate - on the firewall or sill
4. Registration document - field "E" or "VIN"
5. Vehicle card - required for imported vehicles

When buying, always compare the VIN on the windshield with the registration document. A scratched, matte or missing windshield VIN is reason to walk away immediately.

What you can check for free in CEPiK

CEPiK (Poland's Central Vehicle and Driver Register) is a free public database accessible at historiapojazdu.gov.pl - no registration required.

What you'll see:

• Registration dates and countries (whether the car was imported and from where)
• Odometer readings from successive roadworthiness tests - this is where you detect rolled-back mileage
• Continuous third-party insurance coverage (gaps are a warning signal)
• Damage claims recorded in Poland

What CEPiK won't show:

• Accidents that happened abroad (a collision in Germany won't appear in CEPiK)
• Thefts reported in other EU countries
• History from private garages and dealerships

If the car has never left Poland - CEPiK is more than enough. If it comes from Germany, France, Belgium or the USA - it's far from sufficient.

When to pay for a full VIN report

When CEPiK isn't enough, you turn to a full history report. CarVertical aggregates data from hundreds of sources simultaneously:

• Insurance damage databases from across Europe and the USA
• Stolen vehicle registries (Interpol, ANPR)
• History from private service networks and dealerships
• Auction and sales platforms (Copart, BCA, Autobid)
• CEPiK equivalents from 28 countries

Price: approx. €29. For a car worth €10,000–20,000, that's less than 0.3% of the purchase price. One report can save you thousands in hidden damage repairs.

How Autolert uses the VIN

When you paste a listing into Autolert AI, the VIN number is one of the first elements we analyse:

1. We check for its presence - a missing VIN in a listing is an automatic red flag. It's one of 10 risk signals Autolert verifies in 60 seconds - the full list is in the article what to watch out for in car listings.
2. We validate the structure - we check whether the check digit matches. A forged or fictional VIN is detected before you waste your time travelling to view the car.

A full history report from external databases can be ordered directly from within the analysis - one click, result in 2 minutes.