# Roborock Qrevo Slim vs Roborock Saros 20

As of Oct 31, 2026, the Roborock Qrevo Slim costs $1,400 and the Roborock Saros 20 costs $1,600, so the Roborock Qrevo Slim is $200 cheaper. The Roborock Saros 20 has a published review score and ranks #39 in our robot vacuums ranking; the Roborock Qrevo Slim is not scored yet. Pick the Roborock Qrevo Slim for very low furniture. Pick the Roborock Saros 20 for low furniture and tall thresholds.

Prices checked Oct 31, 2026. HTML version: https://robotsforthat.com/vs/roborock-qrevo-slim-vs-roborock-saros-20/

## Side by side

| | Roborock Qrevo Slim | Roborock Saros 20 |
|---|---|---|
| Price | $1,400 | $1,600 |
| 3 year cost | $1,502 | $1,600 |
| Our score | Not scored yet | 5.8/10 |
| Rank in Floors | #81 | #39 |
| Status | on sale | on sale |
| Warranty | 1 year (Roborock US store) | 1 year limited (Roborock US store) |
| Suction | 11,000 Pa (Roborock) | 36,000 Pa (brand claim); Vacuum Wars measured 15 CFM airflow |
| Navigation | StarSight system with solid state 3D ToF LiDAR, optical flow sensor and RGB camera, no top turret (Roborock) | StarSight Autonomous System 2.0 with 3D ToF sensors and an RGB camera, no LiDAR turret |
| Obstacle avoidance | 73 object types with 3D sensors and RGB camera (Roborock); Tech Advisor saw it bump a low hearth and swallow a cat toy feather | Recognizes over 300 obstacle types (brand claim); Vacuum Wars scored 17 of 24 objects avoided |
| Mopping | Dual spinning mops at 200 rpm on a FlexiArm, 10 mm auto lift, 30 water levels (Roborock, Vacuum Wars); Tech Advisor found dried sauce still sticky | Yes, dual spinning pads with up to 13 N pressure, FlexiArm extending pad, 20 mm lift on carpet |
| Self empty | Yes, 2.7 L bag, up to 7 weeks (Roborock, Vacuum Wars) | Yes, auto empties into a disposable bag; Roborock says a bag lasts up to 65 days |
| Dock features | 8 in 1 dock with hot water mop wash, warm air drying, dock self cleaning, auto refill and detachable base (Roborock) | RockDock washes pads with water up to 212°F, dries at 131°F, auto refills water, doses detergent and dries the dust bag |
| Runtime | Up to 180 min (Roborock spec via Vacuum Wars); 5,200 mAh battery (Roborock) | 6,400 mAh battery; BGR cites about 200 min per charge and about 150 min to recharge |
| Dustbin | 220 ml (Roborock spec via Vacuum Wars) | 260 mL onboard bin (Vacuum Wars) |
| Height | 3.23 in (8.2 cm) (Roborock, Tech Advisor) | 3.14 in (79.8 mm) robot height per Roborock |
| App | Roborock app; 2.4 GHz Wi-Fi only; Hello Rocky offline voice control; Alexa, Siri and Google Home; Matter by future update (Roborock) | Roborock app with Matter, Alexa and Google Home support plus built in voice control |
| Threshold | Up to 20 mm (Roborock spec via Vacuum Wars) | Up to 3.46 in double layer thresholds with AdaptiLift Chassis 3.0 (brand claim); Vacuum Wars cleared a 57 mm single step |
| Pet hair | n/a | Vacuum Wars measured 88% flattened pet hair pickup and 0% hair wrap |
| Best for | very low furniture | low furniture and tall thresholds |
| Skip if | you have mostly carpet or want the best value | mopping is your top priority |

## What reviewers found

### Roborock Qrevo Slim

- Tech Advisor: Mostly good on vinyl but missed oats and flour, and left flour and oats on mid pile carpet even after a second max run. It bumped a low hearth and swallowed a large feather, but docked reliably and hair did not wrap the brushes. [Source](https://www.techadvisor.com/article/2492733/roborock-qrevo-slim-mopping-robot-vacuum-review.html)
- TechRadar: Measured noise from about 60 dB on Quiet to 70 dB on Max+, and 44 to 58 dB when mopping. Turbo picked up all the flour and nearly all the oats, while Quiet missed many oats. Hot sauce came off after two passes. It handled thick rugs and raised thresholds but missed edges in zone mode and the area in front of the dock. [Source](https://www.techradar.com/home/robot-vacuums/roborock-qrevo-slim-review)
- Vacuum Wars (3.21 Vacuum Wars stars): Picked up 80% of 2.5 inch pet hair on carpet against a 78% LiDAR robot average and scored 76% on carpet deep cleaning, the best among its peers. Scored 110 on the dried stain test and covered about 1,244 sq ft per charge. It mapped the test home in about 5 min. Raw suction and airflow readings were below average. [Source](https://vacuumwars.com/roborock-qrevo-slim-review-why-its-one-of-the-best-robot-vacuums-of-2024/)

### Roborock Saros 20

- Vacuum Wars (3.81/5): Lab tests found 89% sand removal from carpet, 88% flattened pet hair pickup, 0% hair wrap, 17 of 24 obstacles avoided, a record 57 mm threshold climb and an above average combined mopping score; battery coverage was slightly below average at about 1,038 sq ft per charge. [Source](https://vacuumwars.com/roborock-saros-20-review/)
- CGMagazine (8.5/10): Performed strongly on pet hair, sand and fine dust on carpet and hard floors and fit under low furniture; reviewer flagged middling battery life, a small bin and trouble with loose cables. [Source](https://www.cgmagonline.com/review/hardware/roborock-saros-20-robot-vacuum/)
- Tom's Guide: Picked up 100% of cereal and kitty litter on carpet and 70% of pet hair on carpet, but mopping left floors streaky and patchy and the pads fell off once crossing a cable. [Source](https://www.tomsguide.com/home/home-appliances/roborock-saros-20-review)

## Questions buyers ask

### Which is better, the Roborock Qrevo Slim or the Roborock Saros 20?

The Roborock Saros 20 has a published review score and ranks #39 in our robot vacuums ranking; the Roborock Qrevo Slim is not scored yet. Pick the Roborock Qrevo Slim for very low furniture. Pick the Roborock Saros 20 for low furniture and tall thresholds.

### Which is cheaper?

The Roborock Qrevo Slim at $1,400, versus $1,600 for the Roborock Saros 20, checked Oct 31, 2026. Over 3 years with running costs: $1,502 vs $1,600.

### What is the difference between the Qrevo Slim and the Saros 20?

Suction: 11,000 Pa (Roborock) on the Qrevo Slim, 36,000 Pa (brand claim); Vacuum Wars measured 15 CFM airflow on the Saros 20. Navigation: StarSight system with solid state 3D ToF LiDAR, optical flow sensor and RGB camera, no… on the Qrevo Slim, StarSight Autonomous System 2.0 with 3D ToF sensors and an RGB camera, no LiDAR turret on the Saros 20. Obstacle avoidance: 73 object types with 3D sensors and RGB camera (Roborock); Tech Advisor saw it bump a… on the Qrevo Slim, Recognizes over 300 obstacle types (brand claim); Vacuum Wars scored 17 of 24 objects… on the Saros 20.

Full reviews: [Roborock Qrevo Slim](https://robotsforthat.com/robot/roborock-qrevo-slim/index.md), [Roborock Saros 20](https://robotsforthat.com/robot/roborock-saros-20/index.md)