Roborock Saros 20 vs Roborock Saros 20 Sonic

Roborock sells the same 80 mm, 36,000 Pa chassis with two different mops, and that is the whole decision. Both extend a mop to the skirting and leave it at the dock before carpet, both climb a 45 mm threshold, both recognise obstacles with a camera fused with 3D sensing, and both docks empty the bin and wash and dry the mop.

The Roborock Saros 20 mops with two spinning pads, the mechanism our mopping subscore rates above a vibrating pad, and publishes a carpet boost mode and an automatic water refill at the dock. The Roborock Saros 20 Sonic mops with a single vibrating pad, navigates by a retractable LiDAR where the Saros 20 uses time-of-flight cameras, and is the only one of the two to publish a noise figure, 63 dB.

Our engine has the Saros 20 ahead on mopping, cleaning and what the dock does on its own; the score card beside this verdict has both Verdict Scores. If floors are mostly hard and get mopped often, take the spinning pads. The Sonic makes sense if you prefer LiDAR mapping, or if the price row below puts it well under the Saros 20 in your market.