Start with the least acrobatic location
On many modern cars, the VIN sits on a plate visible through the lower edge of the windscreen. Stand outside in good light and look across the base of the dashboard; the exact side varies between models.
Reflections have a talent for turning 8 into B and 0 into almost anything. If a character is obscured, change your angle rather than guessing from a blurry photograph. You need all 17 characters in the correct order.
Then check the car itself
Common secondary locations include the driver’s door pillar or door shut, the engine bay, bulkhead and floor beneath a small trim flap. Your handbook should identify the approved VIN locations for that model without requiring an archaeological dig through the interior.
Labels often contain several codes. Look for the full chassis identifier rather than accidentally copying a paint code, type-approval number or engine reference. A stamped VIN should be clean and consistent with the surrounding metal.
Match it to the paperwork
For a UK vehicle, the VIN appears on the V5C registration certificate. It may also be shown on insurance, finance, service and inspection documents, although the vehicle and V5C are the most useful starting points.
Compare at least two sources. If the car and paperwork disagree, stop and investigate before ordering a report—or buying the vehicle. That is not the moment for an optimistic theory about typographical errors.
Give the number one final check
A standard modern VIN contains 17 characters and does not use the letters I, O or Q. Those exclusions reduce confusion with 1 and 0, but transposed digits remain a very human way to ruin a lookup.
VIN locations vary by manufacturer, model and year. If it is not immediately visible, consult the handbook or manufacturer guidance. Do not remove fixed trim or disturb airbags and other safety equipment simply to satisfy your curiosity.