Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
Letter to dealer
This was a letter to our dealers we sent out when we first heard of the Kidde fire extinguisher recall, even though it was still unofficial. We knew our coaches on the dealers' lots contained Kidde and could not be sold unreplaced.
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.