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.
SB-0001 REV-A
ORION: SUGGESTION OF MITIGATION MEASURES ON CERTAIN BUSES THAT ARE HYBRID, TO HELP REDUCE POTENTIAL DOUBLE ENDED GROUND FAULTS AND POSSIBLE LITHIUM-ION ENERGY STORAGE SYSTEM (ESS) THERMAL EVENTS. MODELS VII, VII NG. NO MODEL YEARS LISTED. *PE
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.