Roborock Saros 20 vs Roborock Qrevo Slim
Quick take: The Roborock Qrevo Slim costs $201 less; the Roborock Saros 20 has stronger suction (36,000 vs 11,000 Pa); the Roborock Saros 20 runs longer per charge (200 vs 180 min).
Which one to buy
Raised doorways are the main reason to spend about $200 more on the Saros 20. Its AdaptiLift 3.0 chassis set a record in testing by clearing a 57mm single step and handles stacked transitions up to 8.8cm in two moves, and Roborock rates it for double-layer thresholds up to 3.46 in. The Qrevo Slim has no comparable climbing claim. Despite its name, the Slim is also the taller robot, 3.2 in against the Saros 20's 3.1 in, though owners of both say they get under low furniture.
The Saros 20 also posts strong measured cleaning: 89% embedded-sand pickup on carpet against a 78% average, zero hair wrap, 88% flattened pet hair and a 116 dried-stain mopping score with very little water. Its owners' complaints are obstacle avoidance that's only mid-pack at 17 of 24, a heavy dock, an app that buries multi-floor setup, and below-average coverage per charge.
The Qrevo Slim holds its own. It ranked #2 overall in independent testing, mapped a floor in about 5 minutes, placed third in obstacle avoidance and outscored several pricier flagships at mopping. Owners upgrading from an older Qrevo describe a night-and-day improvement. The caveats are a small 220 ml bin, zone-cleaning confusion after furniture moves, thin long-term data and one owner whose unit damaged itself running unattended after its first map.
Without tall thresholds or thick carpet, the Slim delivered most of the flagship experience for about $200 less, but it is now discontinued; Roborock's successor is the Saros 10R at $900. The Saros 20 earns its premium in split-level homes and carpet-heavy houses with pets.
Roborock Saros 20
Worth about $200 more for split-level homes, tall door transitions and thick carpet, where its record threshold climbing and carpet scores pay off.
Roborock Qrevo Slim
For a single-level home with low furniture and mostly hard floors, its tested mopping and avoidance deliver most of the flagship experience for about $200 less; now discontinued, with the Saros 10R as its successor.
| Spec | Roborock Saros 20 | Roborock Qrevo Slim |
|---|---|---|
| Price | ~$1,600 | ~$1,399 |
| Type | Robot Vacuum & Mop | Robot Vacuum & Mop |
| Suction | 36000 Pa | 11000 Pa |
| Battery | 200 min | 180 min |
| Navigation | LiDAR + Camera | LiDAR |
| Filtration | — | — |
| Cordless | Yes | Yes |
| Bagged | — | — |
| Noise | 60 dB | — |
| Dustbin | 259 ml | 220 ml |
| Water tank | 69 ml | 550 ml |
| Self-empty dock | Yes | Yes |
| Auto mop washing | Yes | Yes |
| Hot water washing | Yes | Yes |
| Obstacle avoidance | Yes | Yes |
| Carpet detection | Yes | Yes |
| Auto mop lifting | Yes | Yes |
| Multi-floor mapping | Yes | Yes |
| App control | Yes | Yes |
| Dimensions | 13.8 x 13.9 x 3.1 in | 13.78 x 13.9 x 3.2 in |
| Weight | 11.1 lbs | — |
| Warranty | 1 year | 1 year |
Pros & cons
Roborock Saros 20
- ✓AdaptiLift 3.0 chassis climbs double-layer thresholds up to 3.46 inches - unmatched for split-level homes
- ✓36,000Pa suction and a 6,400mAh battery cover large homes with up to 200 minutes of runtime
- ✓Embedded 3D ToF StarSight 2.0 LiDAR keeps the body at 3.1 inches to slide under low furniture
- ✓Dual spinning mops apply adaptive pressure up to 13N and get washed in 212°F hot water at the dock
- ✓Recognizes around 300 obstacle types with VertiBeam lateral avoidance for cables and clutter
- ✗At $1,599.99 it costs flagship money without the Sonic's vibrating deep-scrub mop
- ✗Small 69ml onboard water tank means constant dock returns on big mopping jobs
- ✗259ml dustbin is modest for a vacuum aimed at large, complex homes
- ✗Tall multifunction dock demands a lot of floor and vertical clearance
Roborock Qrevo Slim
- ✓3.2in ultra-slim body reaches under furniture that stops every full-height robot
- ✓Ranked #2 overall in independent testing, with mapping completed in about 5 minutes
- ✓Mopping scored higher than several pricier premium competitors
- ✓Above-average pet hair pickup despite the slimmed-down chassis
- ✓Multifunctional dock automates emptying, mop washing, drying, and water refilling
- ✗Small 220ml internal dustbin — needs frequent auto-empty cycles in heavy-pet-hair homes
- ✗Navigation occasionally struggled during zone cleaning after furniture was moved around
- ✗Bench-tested raw suction numbers ran below category average (though real-world cleaning didn't show the gap)
- ✗At roughly $1,400 you're paying flagship money specifically for the slim engineering
- ✗Manufacturer doesn't publish a noise level for this model
Roborock Saros 20 vs Roborock Qrevo Slim: common questions
Is the Roborock Saros 20 worth about $200 more than the Qrevo Slim?▾
Only if thresholds or carpet are a problem. The Saros 20 cleared a record 57mm step and pulled 89% of embedded sand from carpet. Without those needs, the Qrevo Slim's #2 overall ranking and stronger obstacle avoidance make it the better value, though the Qrevo Slim is now discontinued.
Which avoids obstacles better, the Saros 20 or the Qrevo Slim?▾
There is no head-to-head result, because they were scored in different tests. The Qrevo Slim placed third in obstacle-avoidance testing among competitors, while the Saros 20 avoided 17 of 24 objects on another course, which owners call mid-pack for a 2026 flagship.
Is the Qrevo Slim actually slimmer than the Roborock Saros 20?▾
No. The Qrevo Slim is listed at 3.2 in tall and the Saros 20 at 3.1 in. Owners of both say they reach under sofas and beds that stop taller robots, so either works for low furniture.