Roborock Saros 20 Sonic
For homes that want the Saros 20’s slim build and threshold climbing with a retractable LiDAR and a sonic mop.
Amazon
4.2/5
Narwal’s cheaper FlowWash robot, with top-tier carpet cleaning and enough range for very large homes. A strong pick for big homes with hard floors to mop.
- Washes mop + emptiesDock
- 93% measuredCarpet pickup
- LiDAR + cameraNavigation
- RollerMop
- 3.7 inHeight
Check price at Amazon$1,099.99
Price checked October 26, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Lifted 93% of sand worked into carpet in Vacuum Wars’ test, among the best results
- Covered about 2,490 sq ft per charge in Vacuum Wars’ test, enough for a very large home in one run
- Track mop is rinsed with heated water and scraped as it goes, so it doesn’t smear dirty water
- Dock washes the mop at up to 212°F and hot-air dries it, cutting odours
- Left no hair wrapped on the brushes in the tangle test
Cons
- Picked up 87.5% of pet hair from carpet, behind some cheaper robots
- You add cleaning solution to the tank yourself rather than the dock dosing it
- Narwal doesn’t publish its runtime or dustbin size
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Independent tests
What independent testers measured, on their own test floors with their own units. Carpet deep clean and pet hair are the share of debris lifted; these feed the Cleaning score.
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 93% | 87.5% | 0 | 2,489 sq ft | Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped). |
Specifications
| Vacuum | |
|---|---|
| Claimed suction | 31,000 Pa |
| Main brush | Floating roller brush (DualFlow tangle-free system) |
| Extending side brush | No |
| Mopping | |
| Mop | Roller, extends to edges |
| Leaves mop at dock | No |
| Extending mop | Yes |
| Dock | |
| Dock | Washes mop + empties |
| Self-empties | Yes |
| Dust bag | 2.4 L |
| Washes mop | Yes |
| Hot-water wash | Yes |
| Hot-air drying | Yes |
| Detergent dosing | No |
| Navigation & app | |
| Navigation | LiDAR + camera |
| Obstacle avoidance | Dual RGB cameras with AI, recognises 300+ objects; structured-light edge sensors |
| Climbs thresholds | 40 mm |
| Build | |
| Height | 3.7 in (95 mm) |
| Battery | 5,900 mAh |
| Warranty | 1 year |
| Released | 2026-08 |
Alternatives in this type
MOVA V50 Ultra Complete
A solid self-cleaning robot for low furniture and thresholds, but at its current price the Mobius 60 measured better for less.
Amazon $899$899
Dreame X50 Ultra
Dreame’s 2025 flagship, now discounted: a good fit for homes with thresholds and low furniture that want leg-climbing and a lowering LiDAR for less than the X60.
Amazon $849.99$849.99
Compare
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