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- L20 Ultra vs Saros 20 Sonic
Dreame L20 Ultra vs Roborock Saros 20 Sonic
What L20 Ultra does better (7) and where Saros 20 Sonic wins (3) — every spec side by side.
vs
5.4Cleaning power8.9
9.5Navigation9.3
7.3Mopping7.4
9.2Base station7.6
9.5Battery9.0
Dimensions
Size comparison
L20 UltraSaros 20 Sonic
| L20 Ultra | Saros 20 Sonic | Difference | |
|---|---|---|---|
| Height | 104 mm | 80 mm | +24 mm |
| Width / diameter | 350 mm | 353 mm | −3 mm |
| Length | 350 mm | 353 mm | −3 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is L20 Ultra better than Saros 20 Sonic?
- Obstacle avoidanceAI camera + 3D structured light vs AI camera
- Mop typeRotating mop pads vs Vibrating / sonic mop
- Runtime260 min vs 190 min+37%
- Dustbin (robot)300 ml vs 228 ml+32%
- Dust bag (dock)3.2 l vs 2.7 l+19%
- Water tank (robot)80 ml vs 70 ml+14%
- Clean water tank (dock)4.5 l vs 4 l+12%
Why is Saros 20 Sonic better than L20 Ultra?
- Suction power7,000 Pa vs 36,000 Pa5.1×
- Height104 mm vs 80 mm+30%
- Charging time270 min vs 150 min+80%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 7,000 Pa | 36,000 Pa |
| Dustbin (robot) | 300 ml | 228 ml |
| Main brush | Single main brush | Single main brush |
| Anti-tangle brush | — | Yes |
| Side brushes | 1 | 1 |
| Extending side brush | — | Yes |
| Carpet detection | Yes | Yes |
| Dirt detection | Yes | — |
| HEPA filter | Yes | — |
| Noise level | 63 dB | 64 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Wall sensor | LiDAR laser (LDS), Retractable LiDAR, Wall sensor, Cliff sensors |
| Retractable LiDAR | — | Yes |
| Obstacle avoidance | AI camera + 3D structured light | AI camera |
| Threshold climbing | — | 88 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Rotating mop pads | Vibrating / sonic mop |
| Mop lifting on carpets | — | Yes |
| Mop lift height | — | 35 mm |
| Automatic mop removal | Yes | Yes |
| Extending mop (edges) | Yes | Yes |
| Water tank (robot) | 80 ml | 70 ml |
| Base station | ||
| Base station | All-in-one dock (empty + wash) | All-in-one dock (empty + wash) |
| Auto-empty dust station | Yes | Yes |
| Dust bag (dock) | 3.2 l | 2.7 l |
| Mop washing in the dock | Yes | Yes |
| Hot-water mop washing | — | Yes |
| Hot-air mop drying | Yes | Yes |
| Automatic water refill | Yes | Yes |
| Plumbed water connection | Yes | — |
| Clean water tank (dock) | 4.5 l | 4 l |
| Dirty water tank (dock) | 4 l | 3.5 l |
| Battery & runtime | ||
| Battery capacity | 6,400 mAh | 6,400 mAh |
| Runtime | 260 min | 190 min |
| Charging time | 270 min | 150 min |
| Recharge & resume | — | Yes |
| Size & weight | ||
| Width / diameter | 350 mm | 353 mm |
| Length | 350 mm | 353 mm |
| Height | 104 mm | 80 mm |
| Weight | 4.3 kg | — |
| Shape | Round | Round |
| Colours | White | Black |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant | Amazon Alexa, Google Assistant, Apple Siri |
| Matter | — | Yes |
| Live camera view / video call | — | Yes |
| Remote control | Yes | — |
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