Neato robots will last quite a bit. If well-maintained, I would say 5, 6, to 8 years. The excellent news is replacements parts for Neato are abundant. You can buy components like batteries, brushes, and filters from Amazon. Even obscure parts like the side brush motor and LIDAR are also available in Amazon. For everything else, there's eBay, and I see a lot of listings there. The most crucial element for longevity is maintenance. Always check the brushes for any hair or debris that may wrap around it. Empty the bin after every run and wipe the sensors using a clean cloth or Q-tip at least once a month.