There is lots of experience to tell. Understanding your vehicle requires more than just the engine. There is a deeper meaning to those seemingly random numbers printed on the dash of your BMW or on the door jamb on the driver's side. It is usually necessary to know the last 17 digits of the chassis number in order to identify your BMW. Are you interested in seeing a complete list of options for your vehicle? Also, the chassis number can be found under the bonnet of the vehicle, stamped / printed near the suspension mounting. All chassis numbers (bonnet, windscreen and V5C) should be identical.