Bosch Performance Line CX Gen 4 reliability

A two-sided record: the most-reported Gen 4 'fault' is the freewheel clack (85 members) which never broke anything, while the genuine killer is water ingress (~40 first-person cases, and ~80% of one UK repairer's failed-Gen-4 ledger).

Bosch's rolling warranty (every replacement motor restarts a fresh 2-year clock) repeatedly turned failures into inconvenience rather than loss. Out of production since the Gen 5 handover; buy on wash habits and service history, not on the rattle.