Automotive sourcing teams often move from prototype parts to repeat production under compressed timelines. The RFQ should distinguish what is temporary for prototype learning from what will remain mandatory when the job scales, otherwise the quote can understate the documentation burden.
Separate prototype assumptions from production controls
State the expected phase of the order and whether the supplier is quoting one-off development parts, bridge quantities, or repeat production. Prototype work may tolerate temporary workholding or manual inspection steps that would be inefficient later, so the commercial assumptions should not stay hidden.
Define drawing package completeness
Release the current drawing revision, CAD source, key dimensions, GD&T interpretation, and approved notes for marking, deburring, coatings, or assembly interfaces. If some dimensions are still under review, isolate them clearly so the supplier can note quote exceptions instead of carrying silent risk.
Specify the records needed at each stage
For prototype buys, the practical need may be dimensional feedback on a short list of features. For repeat production, the buyer may also need ongoing inspection plans, part identification, revision traceability, or packaging controls. Putting those stages in writing prevents prototype pricing from being mistaken for a production-ready scope.