Roborock Saros 20 Sonic

What testers say about the Roborock Saros 20 Sonic

The Roborock Saros 20 Sonic is the top of the Saros line with a vibrating mop pad instead of spinning pads, a retractable lidar that keeps the robot under 3.1 inches tall, and a lifting chassis for high thresholds. The station washes the mop in boiling-hot water, dries with hot air and doses detergent. Vacuum Wars ranks it 12th of 20 and calls it strong in almost everything except mopping.

In the tests it lifted 92 percent of the sand embedded in carpet, the fourth-highest score Vacuum Wars has ever measured, and after the long-hair test nothing was wrapped around the split main brush or the extending side brush. The chassis cleared a single 2.2 in threshold, the same as the standard Saros 20 and the best result to date. Obstacle recognition avoided 19 of 24 objects, better than the Saros 20, and the battery lasted longer than average. The app offers live video, pet finding and Matter.

The big drawback is the mop: dried stains and combined vacuuming and mopping scored well below average, on one of the most expensive robots around. Pet hair pickup reached 78 percent, less than the competition, and the onboard bin is small. If you have a lot of carpet and mostly vacuum, this is one of the best robots you can buy; if you want stains mopped away, the standard Saros 20 is the better choice.

Each point sums up, in our words, the review of the test it names, and its link leads to that review. We do not summarize RTINGS or Wirecutter: their lists are linked above.