Roborock Qrevo Curv 2 Flow vs Roborock Saros 20 Sonic
Researched by Riley Hart · prices checked Nov 4, 2026
As of Nov 4, 2026, the Roborock Qrevo Curv 2 Flow costs $800 and the Roborock Saros 20 Sonic costs $1,700, so the Roborock Qrevo Curv 2 Flow is $900 cheaper. The Roborock Qrevo Curv 2 Flow has a published review score and ranks #22 in our robot vacuums ranking; the Roborock Saros 20 Sonic is not scored yet. Pick the Roborock Qrevo Curv 2 Flow for hard floor apartments. Pick the Roborock Saros 20 Sonic for homes with tall thresholds and lots of carpet. The Roborock Saros 20 Sonic wins 4 of 8 points we can measure (1 tied).
Who wins, point by point
The Roborock Saros 20 Sonic wins 4 of 8 points we can measure (1 tied). Built from today's prices, the specs and independent tests for these two robots.
| Qrevo Curv 2 Flow | Saros 20 Sonic | Winner | |
|---|---|---|---|
| Price today | $800 | $1,700 | Qrevo Curv 2 Flow |
| 3 year cost | $800 | $1,777 | Qrevo Curv 2 Flow |
| Warranty | 1 year | 1 year | Tie |
| Suction | 20,000 Pa | 36,000 Pa | Saros 20 Sonic |
| Runtime per charge | 125 min (tested) | 3 h | Saros 20 Sonic |
| Onboard bin | 325 mL | 228 mL | Qrevo Curv 2 Flow |
| Climbs thresholds up to | 0.8 in | 2.0 in (tested) | Saros 20 Sonic |
| Robot height (fits under furniture) | 4.7 in | 3.1 in | Saros 20 Sonic |
- You want to spend less (saves $900)
- You care most about onboard bin (325 mL vs 228 mL)
- Best for hard floor apartments
- You care most about suction (36,000 Pa vs 20,000 Pa)
- You care most about runtime per charge (3 h vs 125 min (tested))
- You care most about climbs thresholds up to (2.0 in (tested) vs 0.8 in)
- Best for homes with tall thresholds and lots of carpet
- Suction
- 20,000 Pa
- Navigation
- LiDAR
- Mopping
- Roller mop
- Runtime
- 100 to 125 min tested
Roller mop robot for mostly hard floor homes at a midrange price
Full Roborock Qrevo Curv 2 Flow review, pros and cons →- Suction
- 36,000 Pa claimed
- Navigation
- RetractSense
- Mopping
- Extendable VibraRise
- Runtime
- Up to 180 min vac
Slim flagship with a vibrating pad mop and huge threshold climbing
Full Roborock Saros 20 Sonic review, pros and cons →Side by side
| Roborock Qrevo Curv 2 Flow | Roborock Saros 20 Sonic | |
|---|---|---|
| Price | $800 | $1,700 |
| 3 year cost | $800 | $1,777 |
| Our score | 7.2/10 | Not scored yet |
| Rank in Floors | #22 | #105 |
| Status | on sale | on sale |
| Warranty | 1 year (Roborock US store) | 1 year limited (Roborock US store) |
| Suction | 20,000 Pa (Roborock); Vacuum Wars measured 16 CFM airflow | 36,000 Pa claimed (Roborock); PC-WELT said it could not verify the figure in home testing |
| Navigation | PreciSense LiDAR, multi level maps for up to four floors | RetractSense retractable LiDAR (Roborock); PC-WELT mapped about 103 m² in about 12 min |
| Obstacle avoidance | Reactive AI with structured light and an RGB camera, 200+ object types (Roborock); Vacuum Wars scored it 16 of 24 objects avoided | Reactive AI 3.0 with tri laser structured light, RGB camera and VertiBeam side laser (Roborock); Vacuum Wars scored 19 of 24 against a 16 average |
| Mopping | Yes, SpiraFlow 270 mm self cleaning roller mop with up to 15 N pressure, lifts 15 mm and deploys a guard on carpet; no mop only mode | Extendable VibraRise 5.0 flat vibrating pad, about 4,000 vibrations per min and 14 N pressure, lifts over carpet (Roborock); Vacuum Wars combined mopping score 15.8 against a 20.3 average |
| Self empty | Yes, empties into a disposable 2.5 L dust bag in the dock | Yes, disposable bag in the dock (Roborock); PC-WELT cites a maker claim of up to 65 days per bag |
| Dock features | Washes the roller with 167°F water and dries it with warm air up to 131°F; about 4 L clean and 3 L dirty water tanks; no detergent tank and no plumbed refill | Mop washing with water up to 212°F, warm air drying at about 131°F, auto detergent dosing (Roborock, PC-WELT) |
| Runtime | Roborock claims 228 min vacuum only; CyberShack measured 100 to 125 min in mixed use; about 3 hr to recharge | Up to 180 min vac and mop at Balanced (Roborock); Vacuum Wars estimated about 1,225 sq ft per charge; PC-WELT used 103 min for 70 m² on turbo settings |
| Dustbin | 325 ml onboard (Vacuum Wars); 2.5 L bag in the dock | 228 ml robot bin (Vacuum Wars), against a 377 ml average |
| Height | 4.7 in (119 mm) | 79.8 mm, about 3.1 in, with the LiDAR retracted (Roborock) |
| Pet hair | DuoDivide main brush and anti tangle side brushes; 0% tangles in Vacuum Wars 7 inch hair test, 77.5% flattened pet hair pickup | Vacuum Wars measured 78% pet hair pickup against an 82% average, with 0% wrap on 7 in hair |
| App | Roborock app with no go zones, room selection and remote camera; works with Alexa, Google Home and Siri | Roborock app; Matter enabled and works with Alexa, Siri and Google Home (Roborock) |
| Threshold | 20 mm in Vacuum Wars testing | Roborock claims 8.8 cm on stepped double thresholds and 4.5 cm single sills; Vacuum Wars measured 57 mm; PC-WELT saw about 5 cm single thresholds in practice |
| Noise | n/a | PC-WELT measured about 55 to 58 dB(A) standard, 68 dB(A) max suction and 70 dB(A) while emptying (phone app at 1 m) |
| Best for | hard floor apartments | homes with tall thresholds and lots of carpet |
| Skip if | you need it to fit under low furniture | mopping sticky stains is your main job |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
Roborock Qrevo Curv 2 Flow
- Vacuum Wars (3.64/5): Strong vacuum with 87% carpet sand removal and 0% hair tangles, but a combined mopping score of 13.7 against a 22.75 category average and 16 of 24 obstacles avoided. Headline verdict: strong vacuum, disappointing mopping. Source
- CyberShack (8.7/10): Excellent hard floor vacuuming at 91% to 95% and good mopping close to skirting, above average on short and medium pile carpet, but weak on carpet pet hair and no edge or corner cleaning on carpet. Measured 100 to 125 minutes of real runtime. Source
Roborock Saros 20 Sonic
- Vacuum Wars (3.81 Vacuum Wars stars): 92% carpet deep clean (78% average), 0% hair wrap, 78% pet hair pickup (82% average), 19 of 24 obstacles avoided, 57 mm threshold climb, about 1,225 sq ft per charge. Dried stain score 62 against a 108 average, the main weakness. Source
- PC-WELT: Editors' Choice and named its new number one in the premium segment. Measured about 55 to 58 dB(A) in standard mode, cleaned 70 m² in 103 min on turbo settings, and handled single thresholds of about 5 cm in practice. Less effective than roller mops on dried dirt. Source
Questions buyers ask
Which is better, the Roborock Qrevo Curv 2 Flow or the Roborock Saros 20 Sonic?
The Roborock Qrevo Curv 2 Flow has a published review score and ranks #22 in our robot vacuums ranking; the Roborock Saros 20 Sonic is not scored yet. Pick the Roborock Qrevo Curv 2 Flow for hard floor apartments. Pick the Roborock Saros 20 Sonic for homes with tall thresholds and lots of carpet.
Which is cheaper?
The Roborock Qrevo Curv 2 Flow at $800, versus $1,700 for the Roborock Saros 20 Sonic, checked Nov 4, 2026. Over 3 years with running costs: $800 vs $1,777.
What is the difference between the Qrevo Curv 2 Flow and the Saros 20 Sonic?
Suction: 20,000 Pa (Roborock); Vacuum Wars measured 16 CFM airflow on the Qrevo Curv 2 Flow, 36,000 Pa claimed (Roborock); PC-WELT said it could not verify the figure in home testing on the Saros 20 Sonic. Navigation: PreciSense LiDAR, multi level maps for up to four floors on the Qrevo Curv 2 Flow, RetractSense retractable LiDAR (Roborock); PC-WELT mapped about 103 m² in about 12 min on the Saros 20 Sonic. Obstacle avoidance: Reactive AI with structured light and an RGB camera, 200+ object types (Roborock)… on the Qrevo Curv 2 Flow, Reactive AI 3.0 with tri laser structured light, RGB camera and VertiBeam side laser… on the Saros 20 Sonic.
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