Head to head · Robot vacuums
Roborock Saros 20 vs Roborock Saros 20 Sonic
Same chassis, same suction, same 45 mm threshold: the Saros 20 mops with two spinning pads, the Sonic with a vibrating pad, and the two navigate differently.
Manufacturers' published figures, scored by the same engine as the rankings. Nothing here is from a test we ran. · Published
Verdict
The Roborock Saros 20 has the higher Verdict Score, 86 to 81.
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 highest, 92 against 80, 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, 86 to 81, on mopping, cleaning and what the dock does on its own. If floors are mostly hard and get mopped often, take the spinning pads. The Sonic makes sense if you prefer LiDAR mapping or if it is the cheaper of the two in your market, which it is in some and not in others; the price row below has the current figures.
Where the Roborock Saros 20 is ahead
- Cleaning93 · 83
- Mopping92 · 80
- Automation89 · 74
- Ease of Use95 · 81
Where the Roborock Saros 20 Sonic is ahead
- Navigation96 · 94
- Reliability73 · 64
- Value41 · 40
Subscores are from our engine; the specification rows are the manufacturers' published figures, listed only where the better direction is beyond argument.
Full specification, side by side
| Compare | Roborock Saros 20 | Roborock Saros 20 Sonic |
|---|---|---|
 |  | |
86/100 $1,600Price in the manufacturer's shop | 81/100 $1,700Price in the manufacturer's shop | |
| Highest Verdict Score | ||
| Check price on Amazon.de | Check price on Amazon.de | |
| At a glance | ||
| Leads on |
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| Score breakdown | ||
| Verdict Score | 86/100 | 81/100 |
| Cleaning | 93 | 83 |
| Navigation | 94 | 96 |
| Mopping | 92 | 80 |
| Obstacle Avoidance | 95 | 95 |
| Automation | 89 | 74 |
| Ease of Use | 95 | 81 |
| Reliability | 64 | 73 |
| Value | 40 | 41 |
Specifications In green: the better figure where the direction is beyond argument, such as more lawn or less noise. Where it depends on your home, nothing is marked. | ||
| Cleaning | ||
| Suction | 36,000 Pa | 36,000 Pa |
| Brush system | Tangle-resistant | Tangle-resistant |
| Side brushes | 1 | 1 |
| Carpet boost | Yes | No |
| Dustbin | Not published | Not published |
| Noise, mop only | Not published | 55 dB |
| Hair length handled without tangling | Not published | Up to 40 cm |
| Navigation | ||
| Mapping | Solid-state 3D ToF + camera | Retracting LiDAR |
| Obstacle avoidance | Camera + depth sensor | Camera + depth sensor |
| Saved floor plans | Not published | Not published |
| Threshold climb | 45 mm | 45 mm |
| Mopping | ||
| Mop type | Twin spinning pads | Vibrating pad |
| Mop lift | Detaches for carpet | Detaches for carpet |
| Extending mop | Yes | Yes |
| Water tank | Not published | Not published |
| Mop system | Not published | VibraRise 5.0 vibrating mop, extends to the edge, no side module |
| Mop pressure | Not published | 14 N |
| Dock | ||
| Self-emptying | Yes | Yes |
| Mop washing | Yes | Yes |
| Mop drying | Yes | Yes |
| Water refill | Yes | No |
| Plumbed drain | No | No |
| Dust bag interval | Not published | Not published |
| Mop washing temperature | 212 °F / 100 °C | 100 °C |
| Warm-air drying | 131 °F / 55 °C | 55 °C, mop, dust bag and dust path |
| Detergent dispensing | Automatic | Not published |
| Mop washing while vacuuming | Not published | Yes, the mop attachment is washed independently |
| Dock size | Not published | 409 × 440 × 470 mm |
| Software | ||
| No-go zones | Yes | Yes |
| Pet waste recognition | No | No |
| Power | ||
| Battery | Not published | Not published |
| Runtime | Not published | Not published |
| Charging time | Not published | 2 h 30 min |
| Connectivity | ||
| Wi-Fi | Yes | Yes |
| Bluetooth | Yes | No |
| 4G / LTE | No | No |
| Voice control | Yes | No |
| Physical | ||
| Weight | Not published | Not published |
| L × W × H | Not published | 350 × 353 × 80 mm |
| Noise | Not published | 63 dB |
| Support | ||
| Warranty | 12 months | Not published |
| Released | 2025 | Not published |
| Chassis | ||
| Carpet pile cleared | 1.18 in / 30 mm | Not published |
| Double-step threshold | Not published | 4.5 + 4.3 cm, 8.8 cm in all |
| Obstacles | ||
| Recognised object types | 300+ | Not published |
| Sensors | Not published | Structured tri-laser light, RGB camera, VertiBeam side laser |
Also worth a look
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- Dreame85
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