Every car leaves the factory with a build record: a list of order codes covering everything from the paint colour to the software in the head unit. Your build sheet lists them all — often well over a hundred — but at first glance they read like a foreign language. This guide explains how the codes are structured and how to work out what your car was actually ordered with.
Codes come in three kinds
Manufacturers don't only record the extras a buyer chose. A typical build sheet mixes three kinds of entry:
- Standard equipment — fitted to every car in the range, but still logged as a code.
- Ordered options and packages — the extras chosen by the original buyer, individually or bundled (packages usually start with a letter, like P47).
- Control codes — internal factory instructions covering market, compliance and production, with no effect on equipment.
Reading a code line
Each line pairs a short code with the manufacturer's own description. A few examples from a real Mercedes-Benz report:
Tip: paint and trim codes are the quickest authenticity check.
The exterior colour code on the build sheet should match the paint code plate on the car. If they disagree, the car has been resprayed — or worse.
Why the original spec matters
Options are the difference between two otherwise identical cars being worth very different money. A build sheet proves what the car left the factory with — useful when you're valuing a car, checking a used purchase, ordering the right parts, or simply settling an argument about whether the heated steering wheel was factory-fitted.
Because the record is keyed to the VIN, it can't be edited by a seller and doesn't rely on paperwork surviving twenty years of ownership. It's the same data a franchised dealer sees.