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.

Some of the best robot vacuums we've tested are on sale for Prime Day, 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, saving you $300 or more on top designs.