The successor to the best robot vacuum of 2025 has arrived in Switzerland. We analysed every aspect of the Roborock Saros 20 Sonic Complete, from the sonic mopping system to the doubled suction power, to find out whether it’s really worth the price.
Category: Robot vacuum and mop with self-emptying station. Availability: April 2026 (Switzerland).
Overview
When we reviewed the Roborock Saros 10R, we called it the most complete package on the market. It was slim, smart, and had taken first place in every independent ranking. The problem with such claims is that technology doesn't stand still, and Roborock decided to raise the bar further with the Saros 20 Sonic.Unveiled at CES 2026, the Saros 20 Sonic brings a generational leap in almost every specification: suction power goes from 22,000 to 36,000 Pa, threshold climbing doubles to 8.8 cm, mopping moves from rotating pads to VibraRise 5.0 Sonic technology that vibrates 4,000 times a minute, and the dock washes the mops with water at 100°C instead of the previous 80°C.
On paper, it looks like an upgrade in every single area. But numbers on paper and real-world performance are two different things. Here’s what we found by analysing the data from the independent tests run by the most rigorous labs in the world.
Design and dimensions: the same ultra-slim profile, a revolutionary chassis
The Saros 20 Sonic keeps the ultra-slim profile that made its predecessor famous: 7.98 cm tall (or 3.14 inches, for those who appreciate the mathematical reference). It weighs 5.05 kg, about a kilo more than the Saros 10R, a reasonable compromise considering the extra mechanics under the shell.The real star of the design is the AdaptiLift 3.0 chassis. Where its predecessor lifted by 4 cm to clear thresholds (with inconsistent results beyond 3 cm, as we had documented), the Saros 20 Sonic handles single thresholds up to 4.5 cm and double thresholds up to 8.8 cm. The mechanism works like real robotic legs that lift the robot, letting it tackle transitions between floors that would throw any other model.
NotebookCheck tested the system in real conditions and confirmed that the Saros 20 clears double thresholds of 4.5 + 4.3 cm without hesitation. For anyone living in Swiss houses or flats with pronounced thresholds between rooms — and we all know how high they can be — this is a concrete, everyday advantage.
Navigation: 300+ obstacles recognised
The StarSight Autonomous System 2.0 is an evolution of the 3D Time-of-Flight sensor and RGB camera that earned the Saros 10R a perfect 24/24 score in the Vacuum Wars tests. The Saros 20 Sonic now recognises over 300 types of obstacle (against 108 for its predecessor), thanks to the new RockMind AI processor, which processes sensor data at a sampling rate 21 times higher than traditional LDS systems.The VertiBeam side-detection system is still there to cover blind spots, and navigation under low furniture works down to 3.13 inches of clearance. In practice, it gets under pretty much any piece of furniture that isn’t resting directly on the floor.
One interesting addition is pet recognition: the Saros 20 Sonic identifies dogs and cats and adapts its cleaning behaviour, slowing down or changing route so as not to frighten them. Anyone with a nervous cat will appreciate it.
Suction: 36,000 Pa you can really feel
The jump from 22,000 to 36,000 Pa HyperForce isn't just marketing. NotebookCheck confirmed excellent performance on both hard floors and medium-pile carpets, with the robot picking up fine sand, crumbs and pet hair "very well". Suction power has almost doubled compared with the Saros 10R, and the difference is most noticeable on carpets.The brush system has been improved further:
- DuoDivide anti-tangle main brush with a claimed tangle rate of 0%. Two counter-rotating rubber rollers that stop hair from wrapping around the axle
- FlexiArm Arc side brush that extends to reach corners and skirting boards, also with an anti-tangle design
Noise
NotebookCheck measured noise levels precisely:- 38 dB on standby and while the mops are drying (at 1 metre)
- ~60 dB in standard mode and while the mops are being washed
- ~70 dB at full power
Sonic mopping: the real revolution of the Saros 20 Sonic
This is where the Saros 20 Sonic stands clearly apart from its predecessor and most of the competition. The VibraRise 5.0 Sonic system replaces the classic rotating mops with a vibrating pad that oscillates at 4,000 vibrations a minute, applying up to 14 newtons of pressure to the floor.Why does this matter? The Saros 10R’s rotating mops worked well for everyday maintenance cleaning, but were mediocre on dried-on, stubborn stains. We noted this in our previous review, and every test lab flagged the same limitation. The Saros 20’s sonic system attacks stains with much more aggressive mechanical action, similar to that of a manual floor scrubber.
The pad is D-shaped and can extend sideways to reach the edges of walls and corners, solving the long-standing “unwashed strip” along the walls that afflicts practically every robot vacuum with round mops.
For carpets, the automatic lifting system remains: the pad rises when the robot detects a carpet, preventing it from getting wet. On high-pile carpets up to 3 cm, the AdaptiLift chassis raises itself to adapt dynamically to the thickness.
The RockDock station: 100°C water
The Saros 20 Sonic's base station is a substantial upgrade over the Saros 10R's Multifunctional Dock 4.0:- Mop washing with 100°C water (bidirectional) — 20 degrees more than its predecessor
- Drying with 55°C hot air — identical to the previous model
- 99.99% bacteria removal
- Self-emptying for up to 65 days with no manual intervention
- Automatic detergent dispensing with a 590 ml tank
- 2.7-litre dust bag
Battery and runtime
The 6,400 mAh battery delivers up to 200 minutes of runtime in quiet mode. NotebookCheck measured about 1.5 hours to clean 50 square metres, with 40% battery left. They estimate real-world coverage of around 70 m² on a single charge in standard mode, and the full recharge time is 2.5 hours (40% faster than previous models).Estimated monthly consumption for a daily clean of 50 m² is around 11 kWh, with standby consumption below 5W. In a country like Switzerland, where the cost of energy is not negligible, that’s a figure worth considering.
App and smart home
The Roborock app has always been among the best in the sector, and the Saros 20 Sonic adds the SmartPlan 3.0 system with artificial intelligence. You can schedule cleans room by room, define no-go zones, adjust power by area and monitor the robot's status in real time.Matter support is the most significant novelty on the smart home side: the Saros 20 Sonic works natively with Apple Home, Google Home, Amazon Alexa and Siri, with no need for bridges or third-party skills. For anyone who already has a home automation ecosystem, integration is immediate.
The built-in voice assistant (“Hello Rocky”) allows basic commands without a smartphone, and the video call & cruise function turns the robot into a mobile camera to keep an eye on the house while you’re out.
Comparison: Saros 20 Sonic vs Saros 10R vs the competition
| Specification | Saros 20 Sonic | Saros 10R | Dreame X50 Ultra |
|---|---|---|---|
| Suction | 36,000 Pa | 22,000 Pa | 20,000 Pa |
| Max threshold | 8.8 cm (double) | 4 cm | 6 cm (double) |
| Mopping | Sonic 4,000 vib/min | Rotating mops | Rotating mops |
| Height | 7.98 cm | 7.98 cm | ~10 cm |
| Obstacles recognised | 300+ | 108 | ~100 |
| Battery | 6,400 mAh | 5,200 mAh | 6,400 mAh |
| Dock wash temp. | 100°C | 80°C | 70°C |
| Matter support | ✅ | ❌ | ❌ |
| Price CH | CHF 1'099 | CHF 899 | CHF ~1'200 |
Who is the Roborock Saros 20 Sonic for?
The Saros 20 Sonic is the most complete robot vacuum you can buy in Switzerland today. It's aimed at anyone who:- Has high thresholds between rooms — AdaptiLift 3.0 clears transitions that stop every other robot
- Wants serious mopping, not token mopping — the sonic system with 4,000 vibrations/minute and 14N of pressure is an enormous qualitative leap over rotating mops
- Has pets — anti-tangle brushes, AI pet recognition, and 36,000 Pa for hair embedded in carpets
- Is looking for native smart home integration — Matter support makes it compatible with any ecosystem without compromise
Who it's NOT for
- Tight budgets — at CHF 1'099 it isn't cheap, even if the price is very competitive against the Dreame X50 Ultra
- Small flats with no thresholds — the Saros 10R or the Qrevo Edge offer 90% of the features at a lower price
- Anyone who just wants a powerful vacuum — if mopping doesn't interest you, there are cheaper options with comparable suction
Final verdict: 9.2/10
The Roborock Saros 20 Sonic Complete isn't a revolution — it's a masterly evolution of a formula that already worked excellently. The sonic mopping system fixes the predecessor's one real weak point, AdaptiLift 3.0 makes thresholds that used to be a problem irrelevant, and the doubled suction power removes any doubt about carpet performance.At CHF 1’099 on Galaxus, value for money is excellent for a 2026 flagship. The Dreame X50 Ultra costs more and offers less in the areas that matter day to day. If you’re looking for a robot vacuum and mop that does everything well, with no significant compromises, the Saros 20 Sonic is the most sensible choice on the Swiss market today.
Full specifications
| Suction power | 36,000 Pa HyperForce |
|---|---|
| Mopping system | VibraRise 5.0 Sonic — 4,000 vib/min, 14N pressure |
| Navigation | StarSight Autonomous System 2.0 (3D ToF + RGB + VertiBeam) |
| Obstacles recognised | 300+ types |
| Robot dimensions | 353 x 350 x 79.8 mm |
| Robot weight | 5.05 kg |
| Dock dimensions | 381 x 475 x 488 mm |
| Dock weight | 10.54 kg |
| Battery | 6,400 mAh — up to 200 min runtime |
| Charging time | 2.5 hours |
| Threshold climbing | 4.5 cm single / 8.8 cm double (AdaptiLift 3.0) |
| Dust bin | 259 ml (robot) / 2.7 L bag (dock) |
| Noise | 38 dB (standby) — 60 dB (standard) — 70 dB (max) |
| Main brush | DuoDivide anti-tangle (0% tangle rate) |
| Smart home | Matter, Apple Home, Google Home, Alexa, Siri |
| Dock washing | 100°C hot water + 55°C drying |
| Price Switzerland | CHF 1'099 (Galaxus) |
Roborock Saros 20 Sonic Complete
Translated from the Italian original. Read in Italian
