Roborock Qrevo Slim vs Roborock Saros 20: Which to Buy

The Roborock Saros 20 is the better robot vacuum overall, rated 3.9 to 3.5. The Roborock Saros 20 leads on cleaning and mopping. The Roborock Qrevo Slim wins on value. The Roborock Qrevo Slim costs $200 less ($1,399.99 vs $1,599.99).

Higher rated

Roborock Saros 20

#82 in Self-cleaning dock3.9Full review

For mixed-floor homes with high thresholds and low furniture that want a flagship that also cleans carpet well.

Amazon Roborock $1,599.99

$1,599.99

Roborock Qrevo Slim

#102 in Self-cleaning dock3.5Full review

Only worth it deeply discounted for very low furniture; newer slim Roborocks clean better for less.

Amazon $1,399.99

$1,399.99

Prices were last checked October 27, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Which should you buy?

Choose the Roborock Saros 20 for cleaning (measured 89% of sand from carpet, 88% of pet hair, no hair tangled vs measured 76% of sand from carpet, 80% of pet hair, some hair tangled (0.2)) and mopping (Dual spinning pads, leaves its mop at the dock for carpet, extends to edges vs Dual spinning pads, lifts 10 mm, extends to edges).
Choose the Roborock Qrevo Slim for value ($1,400 vs $1,600).

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every self-cleaning dock robot vacuum; a clear win is highlighted. How we rank explains each one.

Factor weight	Roborock Saros 20	Roborock Qrevo Slim
Overall rating	3.9/5	3.5/5
Cleaning 30%	80 measured 89% of sand from carpet, 88% of pet hair, no hair tangled	40 measured 76% of sand from carpet, 80% of pet hair, some hair tangled (0.2)
Value 25%	7 $1,600	15 $1,400
Dock 20%	100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent, optional water hookup	100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent, optional water hookup
Navigation 15%	100 LiDAR + camera	100 LiDAR + camera
Mopping 10%	86 Dual spinning pads, leaves its mop at the dock for carpet, extends to edges	76 Dual spinning pads, lifts 10 mm, extends to edges

Independent tests

Roborock Saros 20

Tested by	Carpet deep clean	Pet hair	Hair tangle (0 = none)	Area per charge	Conditions
Vacuum Wars	89%	88%	0	1,039 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).