Vehicle identified
Open the permanent record to add ownership and photographs.
BN1 and BN2 chassis numbers
Austin-Healey 100 VIN Decoder
The original Austin-Healey 100 uses BN1 and BN2 chassis prefixes. BN1 identifies the earlier three-speed cars, while BN2 identifies the later four-speed family and also encompasses cars that may have been built or converted to 100M specification.
AU
MODEL DECODER1001953–1956
Universal VIN Input
Decode from this page
This page explains 100, but the input accepts every PetrolJunky-supported identifier.
Decoder Reference
What this identifier can tell you
BN1 Austin-Healey 100BN2 Austin-Healey 100
BN1 and BN2 define the Austin-Healey 100 family
The earliest Big Healey uses the BN1 chassis prefix, followed by BN2 for the later four-speed 100. PetrolJunky reads the prefix and car number together, accepts common LHD notation, and records the normalized identifier so a vehicle can accumulate photographs, ownership history and supporting documentation in the registry.
A chassis number cannot authenticate every special model
The BN2 family includes cars associated with 100M specification, but a BN2 chassis number by itself does not establish that a particular vehicle left the factory as a 100M. PetrolJunky deliberately avoids that valuable-car trap. Factory build records and other provenance should be used to establish 100M authenticity.
Useful identification without overclaiming
The decoder can confidently identify BN1 versus BN2 and the appropriate production family while leaving options, exact build date and special specification open for documentary evidence.