{"id":6273,"date":"2026-06-05T08:00:03","date_gmt":"2026-06-05T06:00:03","guid":{"rendered":"https:\/\/www.senses.se\/en\/review-roborock-saros-20-sonic-complete\/"},"modified":"2026-06-05T08:07:26","modified_gmt":"2026-06-05T06:07:26","slug":"review-roborock-saros-20-sonic-complete","status":"publish","type":"post","link":"https:\/\/www.senses.se\/en\/review-roborock-saros-20-sonic-complete\/","title":{"rendered":"Review: Roborock Saros 20 Sonic Complete"},"content":{"rendered":"\n

Roborock<\/strong> Saros 20 Sonic <\/strong>is the successor to Saros 10<\/a> which we tested last year and which then took over the throne on our reference list<\/a>. Virtually everything has been improved since its predecessor, from suction power to how the mop functions. But is it just impressive specifications, or is it actually better? Let’s find out!<\/p>\n\n\n\n

Incredibly good mop<\/h2>\n\n\n\n

Let me start with what is undoubtedly the best thing about the Saros 20 Sonic: namely, the mop. Instead of spinning mops, it features a wide, D-shaped plate that is pressed against the floor with significant pressure (Roborock specifies 14 N) and vibrates up to 4,000 times per minute. <\/p>\n\n\n\n

Roborock has really improved the design since its predecessor, the Saros 10<\/a>, whose simpler but similar mopping solution left a lot to be desired. Now, the entire plate can be extended sideways, allowing it to reach into corners and along baseboards in a way that round, spinning mops can only dream of.<\/p>\n\n\n\n

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No problem reaching all the way to the edges. Photo: Senses.se<\/figcaption><\/figure>\n\n\n\n

The result? During the first run, the mop removed basically everything. Only really ingrained, dried-on stains survive a single round and require the robot to go over the surface one more time. Everything else\u2014everyday dirt, sticky messes, and splashes\u2014disappears immediately. The fact that it also distributes water evenly and avoids those spiral streaks that multi-pad systems sometimes leave behind means the floor looks uniformly clean, all the way to the edges.<\/p>\n\n\n\n

It is also smart that you can set the water volume and vibration completely independently of each other and save the settings per room. Use a little water and high vibration on delicate wooden floors, and full power in the bathroom. When the robot moves onto carpets, the mop is automatically left in the dock to avoid wetting the carpets.<\/p>\n\n\n\n

Saros 20 Sonic has serious suction power<\/h2>\n\n\n\n

The suction power now reaches a full 36,000 Pa, which is a massive increase from the predecessor’s 22,000 Pa. This is noticeable primarily on carpets and large open floor surfaces, and it gets things clean. <\/p>\n\n\n\n

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Photo: Senses.se<\/figcaption><\/figure>\n\n\n\n

The underside is also worth mentioning. The main brush is split in two (Roborock calls it DuoDivide) and, together with the extendable side brush, it stays free from tangles. Those of us with long-haired family members, whether two- or four-legged, know how much time can otherwise be spent picking hair clumps out of a brush. I completely avoided that during the entire test period, and Roborock themselves claim it handles hairs up to 40 centimeters without getting stuck. This matches my experience.<\/p>\n\n\n\n

Thresholds: it gets over them, but sometimes it has to struggle<\/h2>\n\n\n\n
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Photo: Senses.se<\/figcaption><\/figure>\n\n\n\n

When the robot is faced with high and difficult thresholds, the new AdaptiLift chassis (version 3.0) is activated. Instead of getting stuck, the robot lifts its entire body from the floor. This means it should theoretically handle single thresholds up to 4.5 centimeters and double thresholds up to 8.8 centimeters (4.5 plus 4.3). Since the Saros 10 stopped at 3.5 centimeters, this is a significant improvement on paper.<\/p>\n\n\n\n

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High thresholds are a challenge. Photo: Senses.se<\/figcaption><\/figure>\n\n\n\n

Thresholds over 4 cm are a challenge, and sure, it gets over them. But it really has to struggle sometimes. On a couple of occasions, I stood and watched as the robot backed up, took a run-up, crawled up a bit, slid down again, and tried once more. It could take two or three minutes (!) before it was finally over. It’s frustrating to watch, but it actually never gives up, and it never got stuck to the point where I had to rescue it. If you have a home with high or tricky thresholds, this is still one of the few robots that can get everywhere; it’s just not always very elegant. Here is a video where it tries for three minutes without giving up; it doesn’t look very smart, but it gets across.<\/p>\n\n\n\n

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