Quick question about VINs, engine numbers, and titles. So, because the Buick is out of the CA DMV computer, I had to have the VIN verified in order to transfer the title. The title supplied to me by the previous owner lists the engine number as the VIN instead of the serial number. This doesn't make sense to me and I had a hard time explaining this to the officer that conducted the inspection. Does anyone know the rationale behind this?