A quality gas grill is highly repairable. Burners, grates, heat shields and igniters can be renewed while the cookbox and frame remain in service for many years.
What commonly determines lifespan
Burners, heat shields, grates, igniters, hoses/regulators, frame corrosion
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.