Bulk and delta files

When you download a bulk or delta file, you’ll receive an archive file containing vehicle records as gzip compressed JSON documents. You need to decompress the documents before you can use them.

The bulk vehicle data is spread across multiple JSON files. Each file contains approximately 500,000 records. Each line represents a complete vehicle record.

See the Bulk file format for more information.

Delta files contain a complete record, including test history, for any vehicle which has been created, updated or deleted since the previous delta was created.

See the Delta file format for more information.