Robot vacuums can live for years if batteries, brushes, filters and wheel modules remain available. Their biggest weakness is the combination of many wear parts with software and dock dependencies.
What commonly determines lifespan
Battery, rollers, wheel modules, filters, charging contacts, sensors, dock components
This profile is an editorial summary of sourced lifespan context, common service points, maintenance leverage and repairability. See the linked methodology and primary reference before treating any range as a guarantee.