How to use this with the seller
If the report shows nothing of concern, ask to see the V5C in person and compare the VIN on the document to the one stamped on the chassis and printed on the dash. If the report flags something, raise it directly: a Category N write-off is not necessarily a deal-breaker, but a seller who claims a car has no history when MIAFTR shows otherwise is telling you something important about the rest of the conversation.
