BMW has assigned specific chassis number ranges for each variant of the 8 Series. Most of these numbers were actually used in production, but some were not. In cases where a chassis number was not used, one or more of the following reasons apply:
- Market conditions prevented the complete expansion of the allocated chassis number range.
- Due to a manufacturing defect, the car was withdrawn from public sale.
- The transition to the new model/calendar year required a reorganization of the production series, which meant that several chassis numbers could no longer be used.
- The car was manufactured and used internally for assembly line training, prototype development, or other related activities.