Where do I find the VIN on a BMW?

On a BMW the VIN appears in at least four physical locations plus in the vehicle documents. The quickest spot, visible from outside, is the lower left corner of the windscreen on the driver's side: there you'll find a small plate or laser engraving showing the 17-character VIN, without having to open a door. In the engine bay, the VIN is usually stamped on the left chassis rail — clearly visible on many BMW model ranges once the bonnet is open. On the driver's-side door pillar there is a sticker or data plate with further vehicle data including the VIN. In Part I of the registration certificate (field E) and Part II (the vehicle title), the VIN is officially recorded. All entries must match character for character.

The windscreen is the first place to look on a BMW: the VIN is located at the bottom of the windscreen on the driver's side and can be read from outside without any tools. With tinted glass — which is common on many BMW models either from the factory or as a retrofit — reading it can be difficult in poor light. In that case, a torch shone through the glass from inside provides a clear view. The VIN should be recognisable as a clean, even engraving or stamped impression, without scratches or any signs of reworking. In the engine bay, on most BMW series there is a stamped VIN on the left chassis rail or on the bulkhead. This stamping sits directly in the body sheet metal and, on an untampered vehicle, is struck deep and evenly. Grinding marks, varying depth of the characters or unevenness in the metal around the stamping are warning signs that call for a professional inspection. On some older BMW model ranges from the 1990s and early 2000s, the engine-bay stamping can be hard to read due to dirt — a damp cloth can help here. On the driver's-side door pillar there is a sticker or data plate which, besides the VIN, also shows the tyre pressures and paint code. Since stickers are easier to replace than stamped impressions, the door-pillar entry should be regarded as a supplementary reference. On vehicles in the 5 Series, 6 Series, 7 Series and 8 Series as well as M models, a riveted metal plate is often fitted instead of a simple sticker. In the vehicle documents — Part I of the registration certificate (field E) and Part II (the vehicle title) — the VIN is officially recorded and serves as the reference for all physical checks. When buying a used car, the vehicle title should always be presented first and the VIN on it compared with all of the vehicle's stampings.

BMW uses several WMI codes depending on which model and which production plant the vehicle comes from. This means: two visually similar BMWs can have different WMI codes without that being a warning sign. An X5 produced in Spartanburg (USA) starts with 5UX, whereas an X5 from the German plant has WBX — that is normal and manufacturer-compliant. M models are clearly identifiable by the WMI code WBS. Anyone buying an M car should check whether the VIN begins with WBS if the vehicle is described as an M3, M4, M5 or similar. A supposed M car with a WBA prefix is not a genuine M car but a regular BMW — possibly with a cosmetic M package. On BMW vehicles with tinted windows — from the factory or as a retrofit — the windscreen VIN can be hard to make out from outside in poor light. In that case, simply shine a torch against the glass from inside: this makes the stamping clearly visible. When reading the VIN on a BMW, it is always advisable to cross-check at least two physical locations (for example the windscreen and the engine bay) as well as the vehicle documents. If one location does not match, that is a serious warning sign — even if just a single character differs.