Prime Day is nearly as good a time to buy a robot vacuum on sale as Black Friday. For new robot vacuums that debuted at CES 2025, it's the first big sale event of the year — most of them were far too fresh to go on sale for Amazon's Big Spring Sale in March.

Our editors rounded up the best Prime Day robot vacuum deals, including savings of up to 50% on top-rated models from iRobot, Shark and Eufy.

Amazon Prime Day 2025 is an extended four-day event this year, lasting from July 8 to July 11.One of our favorite robot vacuums, the Eufy E20, is currently 42% off. We’re seeing very significant discounts of up to 50% off editor-tested and recommended models,