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Robovations™
Robot Autonomy, Classified
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Comparison · 2 robots

Roborock Qrevo Edge 2 · Roborock Saros 20

All robot vacuums. Every measure below is plotted against the full class, so a difference can be read against how much the class itself varies.

  1. Roborock Qrevo Edge 2
  2. Roborock Saros 20

Up to three

01 Classification

What each one does on its own.

The Autonomy Ladder is the same five rungs for every robot on the site. A rung describes the conditions a robot handles without you, not how good it is.

V
Generalized
Any task, any setting
IV
Environmental
Handles new obstacles without help
III
Conditional
Finishes familiar jobs on its own
Roborock Qrevo Edge 2Roborock Saros 20
II
Assisted
Runs preset routines, needs rescue
I
Manual
One action, on command
02 Assessment

Where they actually differ.

The Robovations Score is nine inputs across three pillars, each weighted as shown and each scored so that more is better. A robot can lead on one and trail on another, which is the point of showing them apart. Cost of ownership and data handling are reported on each robot's own page and are never averaged into the score.

Capability

Task completion16% of score
Does it finish the job it is sold to do, unattended
  • Roborock Qrevo Edge 284
  • Roborock Saros 2097
18median 72 across 433 scored robots100
Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
  • Roborock Qrevo Edge 280
  • Roborock Saros 2088
0median 70 across 421 scored robots100
Edge-case recovery10% of score
Does it recover from the failures its category presents
  • Roborock Qrevo Edge 264
  • Roborock Saros 2030
18median 52 across 320 scored robots100
Operating envelope4% of score
How far conditions can vary before performance drops
  • Roborock Qrevo Edge 272
  • Roborock Saros 2075
28median 68 across 397 scored robots100

Dependability

Field failure rate16% of score
Documented hardware failures per owner-year
  • Roborock Qrevo Edge 270
  • Roborock Saros 2029
6median 70 across 359 scored robots100
Software stability14% of score
Whether updates fix more than they break
  • Roborock Qrevo Edge 265
  • Roborock Saros 2065
15median 65 across 342 scored robots100
Support longevity10% of score
Committed parts, service and updates, with dates
  • Roborock Qrevo Edge 260
  • Roborock Saros 2073
0median 62 across 429 scored robots100

Ownership burden

Routine maintenance12% of score
Hands-on time it asks for in normal operation
  • Roborock Qrevo Edge 280
  • Roborock Saros 20100
22median 67 across 434 scored robots100
Consumables8% of score
Parts that must be bought to keep it working
  • Roborock Qrevo Edge 266
  • Roborock Saros 2069
8median 69 across 434 scored robots100
03 Measured against the class

How far apart is a long way?

A number only means something next to the spread it sits in. Each track below is the real range across every classified robot in the class, with the median marked.

Price217 with a published figure
  • Roborock Qrevo Edge 2$1,299.99
  • Roborock Saros 20$1,599.99
$160median $799.99$2,599
Suction (mode not stated)210 with a published figure
  • Roborock Qrevo Edge 225,000 Pa
  • Roborock Saros 2036,000 Pa
1,000 Pamedian 10,000 Pa42,000 Pa
Weight191 with a published figure
  • Roborock Qrevo Edge 29.9 lbs
  • Roborock Saros 2011.1 lbs
3.6 lbsmedian 8.4 lbs25 lbs
Height232 with a published figure
  • Roborock Qrevo Edge 23.1 in
  • Roborock Saros 203.1 in
2.6 inmedian 3.8 in7.8 in

Not compared, because fewer than two of these robots carry a published figure: Runtime, Charge time, Noise.

04 Ownership

What the numbers leave out.

The trade-off

What each design gives up to be good at what it is good at.

Roborock Qrevo Edge 2

The retracting LiDAR buys a 3.14 in profile; the 240 mL bin is the space it gave up.

Carpet and mopping results led Vacuum Wars’ averages, while obstacle avoidance fell below its predecessor.

Roborock Saros 20

FlexiArm extends reach, not capability: the side brush and mop pad swing outward to meet corners and baseboards, which closes the edge gap most round robots leave, but the Saros 20 still picks nothing up, so floors have to be cleared before a run.

Who each one is wrong for

Stated by the record itself. A robot being wrong for a household is a fact about fit, not a fault.

Roborock Qrevo Edge 2
Floors cluttered with cords, laces and small toys
Vacuum Wars saw it avoid 14 of 24 obstacles, below average, and Basic Tutorials saw it suck up a shoelace in two of ten runs.
Homes with fluffy high-pile rugs
Basic Tutorials found a thick, fluffy rug hard for it to clean and to drive across.
Large homes with heavy debris
Vacuum Wars notes the 240 mL onboard bin is well below its 377 mL average and can overflow before the robot returns to empty.
Kitchens with stubborn dried-on stains
Basic Tutorials found heavily dried stains beyond the 8 N pad pressure without extra passes, and there is no automatic detergent dispensing.
Roborock Saros 20
Homes expecting the dock to need nothing at all
The dock washes, dries and re-washes the mop pads and cleans itself, but the clean and dirty water tanks are still filled and emptied by hand, the dust bag changes about every 65 days, and pads and brushes remain consumables. The daily routine is hands-off; the ownership burden is not zero.
Flat single-level units with no raised thresholds
AdaptiLift earns its cost by crossing raised door sills; in a level apartment there is nothing for it to lift over. Lower-tier models cover the same floor plan without paying for the chassis.

What stays your job

The upkeep ownership hands back to you, whatever the autonomy level says.

Roborock Qrevo Edge 2
  • As needed: Refill the 4 L clean water tank and empty the 3.5 L dirty water tank, per Basic Tutorials.
  • As needed: Add cleaning solution to the clean tank by hand; the dock does not dispense detergent.
  • As needed: Replace the 2.7 L dust bag, which Roborock says lasts up to 65 days.
  • As needed: Remove and rinse the dock’s washing insert, per Basic Tutorials.
  • As needed: Replace the rotating mop cloths; Roborock sells 4-packs.
Roborock Saros 20
  • Weekly: Check the dock’s clean and dirty water tanks. The dock washes and dries the mop pads itself, so hand-rinsing is for spills or unusually heavy soiling only.
  • Monthly: Clean filter; inspect dock seal and wash tray for dust and hair accumulation.
  • About every 65 days: Dust bag replacement in the auto-empty dock ($20-30), roughly six bags a year at Roborock’s rated interval.
  • Every 3-6 months: Replace side brush ($8-12); mop pad replacement ($18-24).
  • Annually: Deep dock cleaning.
05 Evidence

How much each of these is standing on.

Classifications rest on different depths of evidence. A pre-release assessment and a verified one are not the same kind of claim.

Evidence behind each classification
Robot Evidence status Sources reviewed Last assessed
Roborock Qrevo Edge 2 Provisional 4 Sep 2026
Roborock Saros 20 Provisional 8 Aug 2026

Robovations classifies robots; it does not rank them. Nothing on this page is a recommendation, and no manufacturer influences a classification or its placement here.