Validate any 17-character VIN and decode everything available - chassis and engine codes, full factory specs, safety equipment, and open recalls. Built for enthusiasts: F80 and S55, not just "2018 BMW M3."
Every vehicle built since 1981 carries a 17-character VIN, standardized under ISO 3779. It breaks down into three sections:
Three layers, in order of arrival: an instant pattern ID from our own curated VIN-prefix database (the same technique commercial decoders use, focused on BMW M, Porsche, and tuner platforms); full specifications from the U.S. NHTSA vPIC database - the federal registry every manufacturer must file vehicle data with; and recall campaigns from the NHTSA recalls database. The VIN you enter is sent only to these government services; TunerBench never stores it.
Government data says "2018 BMW M3." Enthusiasts say "F80 with an S55." Our enthusiast database maps both the raw VIN prefix and the decoded model/year to the platform and engine codes used in forums, parts catalogs, and tuning software. Pattern IDs are marked as such - if one ever disagrees with the government data, trust the government data and tell us so we can fix the pattern.
The VIN identifies the car - but the individual options it left the factory with (packages, paint, interior codes) live in the manufacturer's production records, which have no free public interface. To get a complete build sheet: any franchise dealer can print it from your VIN in seconds, some manufacturers expose it through their owner portals or customer service, and marque-specific communities maintain lookup tools of varying reliability. Once you have your option codes, the chassis code above is what you'll use to search parts and tuning info.
Characters 1-3 (the WMI) identify the country and manufacturer, 4-8 describe the vehicle (model, body, engine), 9 is a mathematical check digit, 10 is the model year, 11 is the assembly plant, and 12-17 are the production serial number.
Not directly. The VIN identifies the vehicle, but factory option codes live in the manufacturer's build records, which have no free public API. A dealership can print the full build sheet from the VIN, and some marques offer official owner-portal lookups.
Yes - recall campaigns are filed with NHTSA by year, make, and model. This decoder checks the federal recalls database automatically and lists any campaigns affecting the decoded vehicle. Whether a specific recall was already performed on one exact car still requires a dealer check or NHTSA's VIN recall lookup.
Government records describe a car as, say, a 2018 BMW M3. Enthusiasts, parts catalogs, and tuning software use the internal chassis code (F80) and engine code (S55) instead. This decoder maps the VIN pattern and the decoded model/year to those codes so you can search parts, tunes, and forums with the terms people actually use. See our chassis code and engine code guides for the full reference.
A VIN is not secret - it is visible through the windshield and printed on the title and insurance documents. This tool decodes the structure offline in your browser and only sends the VIN to NHTSA's free government services for full specifications and recalls. TunerBench does not store the VIN you enter.
The ninth character is a mathematical check digit. Each of the other 16 characters is converted to a number, multiplied by a fixed position weight, summed, and divided by 11; the remainder is the expected check digit (10 is written as X). If it does not match, the VIN has a typo or has been altered, so the decoder flags it.
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