Compare Roborock QV 35A Robot Vacuum and Mop vs Roborock Saros 20

P1 Roborock QV 35A Robot Vacuum and Mop
P2 Roborock Saros 20

Comparison Takeaways

Roborock QV 35A Robot Vacuum and Mop

Where It Has the Edge

  • Bin and Bag is 4.0 vs 2.5. The onboard dust bin is praised as relatively large for a newer robot vacuum design.
  • Large debris handling is 4.5 vs 3.4. Large debris handling on hard floors is positive in one food-debris test, where two passes picked everything up.
  • Price and Value is 4.3 vs 3.3. Reviewers frame price as a major strength, especially below $500, though one says the deal improves when it...
  • Dock noise is 4.5 vs 3.8. Dock noise is rated positively in hands-on reviews, with auto-empty and drying described as not very loud or...

Roborock Saros 20

Where It Has the Edge

  • Odor control is 5.0 vs 2.0. Odor control is praised where heated drying and airflow were said to reduce mustiness and used-mop smells.
  • Suitability for heavy-duty use is 5.0 vs 2.5. Heavy-duty suitability is good for demanding homes and studio-style tests, though not every spill or deep carpet issue...
  • Hair‑Wrap / Tangle Resistance is 4.8 vs 3.0. Review evidence for Hair‑Wrap / Tangle Resistance averaged 4.8/5 across scored reviews.
  • Hair Pickup — Carpets is 3.7 vs 2.0. Review evidence for Hair Pickup — Carpets averaged 3.7/5 across scored reviews.
Average score
Product 1: Roborock QV 35A Robot Vacuum...
4.0
Product 2: Roborock Saros 20
4.1
Adaptive chassis lift
Product 1: Roborock QV 35A Robot Vacuum...
4.0

Threshold and chassis handling are rated well, with reviewers noting it can cross half-inch-plus and 3/4-inch transitions.

Product 2: Roborock Saros 20
4.6

Most reviewers praised AdaptiLift for thresholds, rugs and fewer rescues, though one negative test found threshold behavior unreliable.

Aesthetic design and finish
Product 1: Roborock QV 35A Robot Vacuum...
4.0

The finish and manufacturing are described positively, with one reviewer calling them neat and nice.

Product 2: Roborock Saros 20
4.0

Design impressions were generally positive for decor fit and finish, with some mixed feelings about the dock's matte change.

AI, Smart, App and Automation
Product 1: Roborock QV 35A Robot Vacuum...
4.6

Smart features, mapping, app controls, scheduling, routines, and automation are repeatedly praised as polished and full-featured.

Product 2: Roborock Saros 20
4.8

The app, AI planning, Matter support and smart-home automation drew broad praise, despite some complexity for advanced integrations and dry-spill detection.

Area Rug Handling
Product 1: Roborock QV 35A Robot Vacuum...
4.3

Area rug handling is positive because the mop pads lift and avoid dragging wet pads on carpet or rugs.

Product 2: Roborock Saros 20
4.5

Rug and floor-mat handling is mostly strong, especially on transitions, but evidence includes a few carpet-specific caveats.

Assembly and Setup
Product 1: Roborock QV 35A Robot Vacuum...
5.0

Setup earns very strong praise, with reviewers calling installation and Wi-Fi/app setup simple.

Product 2: Roborock Saros 20
4.9

Setup was consistently described as simple or straightforward, with quick app pairing and mapping.

Battery and Charging
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
5.0

Battery feedback was positive, with reviewers saying runtime was worry-free or record-setting in testing.

Bin and Bag
Product 1: Roborock QV 35A Robot Vacuum...
4.0

The onboard dust bin is praised as relatively large for a newer robot vacuum design.

Product 2: Roborock Saros 20
2.5

Bin and bag feedback is mixed: auto handling helps, but reviewers criticized bag dependence and the dustbin layout.

Build quality and durability
Product 1: Roborock QV 35A Robot Vacuum...
4.0

Build quality earns a positive note from the same manufacturing praise, but evidence is limited to one hands-on review.

Product 2: Roborock Saros 20
No score yet
Carpet — High-Pile Pickup
Product 1: Roborock QV 35A Robot Vacuum...
3.3

High-pile or deep carpet pickup is mixed: suction is respectable, but reviewers say it lacks deep penetration and cannot replace upright vacuuming.

Product 2: Roborock Saros 20
4.0

High-pile and thicker rug evidence is favorable overall, though one review only found rug navigation acceptable.

Carpet — Low-Pile Pickup
Product 1: Roborock QV 35A Robot Vacuum...
4.0

Low-pile carpet pickup is positive in the available carpet food-debris test, especially after a second pass.

Product 2: Roborock Saros 20
4.6

Low- and standard-carpet pickup scored very well in tests, including strong sand and coffee-ground pickup results.

Carpet — Medium-Pile Pickup
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
2.5

Medium/fluffier carpet pickup was weaker in one home test, where powder and oats remained after cleaning.

Comparative performance
Product 1: Roborock QV 35A Robot Vacuum...
4.2

Comparative performance is strong for the price, with reviewers saying it keeps up with higher models in key everyday areas.

Product 2: Roborock Saros 20
3.5

Comparative evidence is mixed: several reviewers saw meaningful upgrades, while others called it more refinement than revolution or worse than the 10R.

Controls and UI
Product 1: Roborock QV 35A Robot Vacuum...
4.6

Controls and app UI are consistently praised for customization, room/zones controls, and an easy interface.

Product 2: Roborock Saros 20
4.5

Controls and UI are broadly praised through the Roborock app and Matter, though one reviewer disliked excessive mop-water granularity.

Corner Cleaning (Robot)
Product 1: Roborock QV 35A Robot Vacuum...
3.0

Corner cleaning is only average because reviewers say corners are just okay and note the lack of extending pads or brushes.

Product 2: Roborock Saros 20
4.5

Corner cleaning is usually strong thanks to extending brushes and mop arms, but a few tests found small misses or imperfect coverage.

Crevice / Groove Pickup (Hard Floors)
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
3.8

Crevice and groove performance is limited but generally acceptable, with one comparison finding Dreame stronger for grout.

Dirty water sensor
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
3.7

Dirty-water or dock dirt-detection feedback is moderately positive, helping trigger repeat cleaning, though not always class-leading.

Docking and Auto-Empty Reliability (Robot)
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Docking and auto-empty reliability are positive in the available tests, including successful emptying after cleaning.

Product 2: Roborock Saros 20
3.9

Docking and auto-empty reliability are mostly positive, but one review reported failed emptying and another had rescue issues.

Dock noise
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Dock noise is rated positively in hands-on reviews, with auto-empty and drying described as not very loud or quiet.

Product 2: Roborock Saros 20
3.8

Dock noise is mixed: one reviewer found self-emptying loud, while another liked the quiet soak mode.

Dried-On Stain Removal
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Dried-on stain removal is a strength in the tests, including maple syrup and dried coffee on hard flooring.

Product 2: Roborock Saros 20
4.3

Dried-on stain removal is strong across multiple tests, although extreme stains and one negative review exposed limitations.

Ease of use
Product 1: Roborock QV 35A Robot Vacuum...
4.8

Ease of use is strong, with reviewers highlighting simple setup and a good overall user experience.

Product 2: Roborock Saros 20
4.8

Ease of use is generally high, with simple setup, Matter control and reduced babysitting repeatedly highlighted.

Edge and Baseboard Cleaning (Hard Floors)
Product 1: Roborock QV 35A Robot Vacuum...
3.3

Edge cleaning is mixed: it can track along an edge well, but lacks extendable edge hardware found on higher models.

Product 2: Roborock Saros 20
4.8

Edge and baseboard cleaning is a standout, especially with FlexiArm side brush and mop reach, though one review wanted stronger edge pickup.

Edge‑Following Accuracy (Robot)
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Edge-following accuracy earns a positive test result for going right up to an edge without hassle.

Product 2: Roborock Saros 20
4.0

Edge-following around furniture was praised in the negative review, but evidence is limited to that use case.

Emptying and Mess Control
Product 1: Roborock QV 35A Robot Vacuum...
4.3

Emptying and mess control are positive, with reviewers reporting automated maintenance and successful dust-bin emptying.

Product 2: Roborock Saros 20
4.9

Emptying and mess control are strong overall because the dock automates dust, mop washing and tray cleanup, with some reliability caveats.

Filtration / Dust Containment
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Auto-empty dust containment gets a strong but narrow positive note for preventing dust from escaping around the bag during suction.

Product 2: Roborock Saros 20
No score yet
Floor Drying Time
Product 1: Roborock QV 35A Robot Vacuum...
2.9

Drying performance is a recurring compromise because it uses room-temperature air and takes hours to dry the pads.

Product 2: Roborock Saros 20
No score yet
Floorhead design
Product 1: Roborock QV 35A Robot Vacuum...
4.0

The rubber floorhead design is viewed positively because it is easy to clean.

Product 2: Roborock Saros 20
3.7

Floorhead design is generally positive for hair and edge cleaning, but side-brush comparisons exposed some tradeoffs.

Floorhead Seal on Hard Floors
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
5.0

The floorhead seal evidence is strong but carpet-specific, with one comparison praising adaptive sealing on carpet.

Floor shine after cleaning
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
2.0

Floor finish feedback is weak and negative in one review, where a condiment test left the kitchen floor greasy.

Fresh Liquid Pickup Speed
Product 1: Roborock QV 35A Robot Vacuum...
2.0

Fresh large liquid or spill pickup is a poor fit because reviewers say robot vac-mops are not engineered to suck up big wet spills.

Product 2: Roborock Saros 20
1.8

Review evidence for Fresh Liquid Pickup Speed averaged 1.8/5 across scored reviews.

Hair-removal channel issues
Product 1: Roborock QV 35A Robot Vacuum...
4.0

Hair-removal channel design is positive because hair that reaches the ends is described as easy to remove.

Product 2: Roborock Saros 20
No score yet
Hair Pickup — Carpets
Product 1: Roborock QV 35A Robot Vacuum...
2.0

Carpet hair pickup is weak in the available carpet test, where it struggled to lift hair from carpet.

Product 2: Roborock Saros 20
3.7

Review evidence for Hair Pickup — Carpets averaged 3.7/5 across scored reviews.

Hair Pickup — Hard Floors
Product 1: Roborock QV 35A Robot Vacuum...
4.2

Hard-floor hair pickup is generally strong, with reviewers saying it got most long hairs and performed amazingly on hard floors.

Product 2: Roborock Saros 20
3.5

Review evidence for Hair Pickup — Hard Floors averaged 3.5/5 across scored reviews.

Hair‑Wrap / Tangle Resistance
Product 1: Roborock QV 35A Robot Vacuum...
3.0

Hair-wrap resistance is mixed: some design choices help, but multiple hands-on tests still found hair wrap on the roller.

Product 2: Roborock Saros 20
4.8

Review evidence for Hair‑Wrap / Tangle Resistance averaged 4.8/5 across scored reviews.

Hard Floor — Fine Dust Pickup
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Hard-floor fine debris pickup is excellent in tests, including a tile run that left no crumbs behind.

Product 2: Roborock Saros 20
4.6

Review evidence for Hard Floor — Fine Dust Pickup averaged 4.6/5 across scored reviews.

Hard Floor — Large Debris Intake
Product 1: Roborock QV 35A Robot Vacuum...
4.3

Hard-floor large debris intake is strong, with food debris mostly picked up on the first pass and finished by later passes.

Product 2: Roborock Saros 20
5.0

Review evidence for Hard Floor — Large Debris Intake averaged 5.0/5 across scored reviews.

Heating element
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
4.5

Heating performance is praised for hot-water washing, though one tester noted mop water cools quickly after refilling.

Innovation compared to competitors
Product 1: Roborock QV 35A Robot Vacuum...
3.8

Innovation is viewed as strong value-driven trickle-down tech, though one reviewer notes it is not the cutting-edge flagship design.

Product 2: Roborock Saros 20
4.9

Reviewers often framed the Saros 20 as innovative, especially for physical mobility, Matter integration and category-leading refinement.

Large debris handling
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Large debris handling on hard floors is positive in one food-debris test, where two passes picked everything up.

Product 2: Roborock Saros 20
3.4

Large debris handling is mixed: many tests were strong, but larger hair clumps, sand, debris piles and peanuts exposed misses.

Low-profile design
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
4.8

The low-profile body is one of the clearest strengths, repeatedly helping the robot reach under furniture and tight spaces.

Maintenance requirements
Product 1: Roborock QV 35A Robot Vacuum...
4.4

Maintenance is a strong point, especially the removable dock tray, washable parts, and easy access for cleaning.

Product 2: Roborock Saros 20
4.7

Maintenance is mostly low-effort thanks to self-cleaning and accessible trays, though tanks, bags and occasional bin checks remain.

Maneuverability and Handling
Product 1: Roborock QV 35A Robot Vacuum...
4.0

Handling over thresholds receives positive evidence from a tested 3/4-inch transition.

Product 2: Roborock Saros 20
3.7

Maneuverability is generally strong in cluttered spaces, but one review found wandering patterns and erratic movement.

Map and Path Efficiency (Robot Vacuums)
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Mapping and route efficiency are among the strongest areas, with repeated praise for accurate maps, straight lines, and efficient coverage.

Product 2: Roborock Saros 20
4.5

Mapping and path efficiency are usually excellent, with fast mapping and efficient routing, but one review reported random, slow cleaning.

Mop lifting system
Product 1: Roborock QV 35A Robot Vacuum...
4.3

The mop-lifting system is positive for short-pile carpet and rugs because it keeps wet pads from dragging.

Product 2: Roborock Saros 20
4.6

Mop lifting/removal is strongly praised for mixed floors and carpet protection, although one review had mop-head detachment over a cable.

Mopping performance
Product 1: Roborock QV 35A Robot Vacuum...
4.0

Mopping performance is good for routine cleaning and dried stains, but less ideal for severe muddy messes or perfect residue-free results.

Product 2: Roborock Saros 20
3.8

Mopping is the most mixed core attribute: many stain and maintenance tests were strong, but several reviewers found streaks, gaps or spreading.

Noise level
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Noise levels are praised in the dock/drying context, with reviewers saying it is hard to hear.

Product 2: Roborock Saros 20
4.4

Noise feedback is mostly favorable for the robot itself, while dock and pump noises are the main caveat.

Obstacle Avoidance (Robot)
Product 1: Roborock QV 35A Robot Vacuum...
3.5

Obstacle avoidance is mixed: larger objects are handled well, but cables and low objects remain a repeated weakness.

Product 2: Roborock Saros 20
4.4

Obstacle avoidance is broadly praised, especially for cables and small items, but one negative review found severe failures with fake pet mess and sensors.

Odor control
Product 1: Roborock QV 35A Robot Vacuum...
2.0

Odor control is a weak point because dirty water tanks and wet pads can stink if not emptied or dried promptly.

Product 2: Roborock Saros 20
5.0

Odor control is praised where heated drying and airflow were said to reduce mustiness and used-mop smells.

Ongoing ownership costs (bags, filters, batteries)
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
2.0

Ownership-cost evidence is negative around continued dust-bag use and consumables.

Overall cleaning convenience
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Overall cleaning convenience is strong because the dock automates maintenance and the robot can handle routine vacuuming and mopping.

Product 2: Roborock Saros 20
4.4

Overall cleaning convenience is a major strength in positive reviews, but a negative review found the robot required too much intervention.

Overall opinion
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Overall sentiment is positive across the reviews, centered on strong value, capable cleaning, and a polished app despite budget tradeoffs.

Product 2: Roborock Saros 20
4.3

Overall opinion is favorable across most reviews, but not unanimous; one reviewer was strongly disappointed.

Pet-Ready Features
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
3.7

Pet-ready performance is mixed: many reviewers praised pet hair and pet-friendly smarts, but one found fake pet mess avoidance failed badly.

Price and Value
Product 1: Roborock QV 35A Robot Vacuum...
4.3

Reviewers frame price as a major strength, especially below $500, though one says the deal improves when it drops lower.

Product 2: Roborock Saros 20
3.3

Price and value are mixed: some reviewers liked flagship value versus predecessors, while others found it expensive or poor value for their experience.

Privacy controls
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
5.0

Privacy controls receive positive evidence from reviewers noting privacy certification and no intelligence-related privacy infringement.

Runtime
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
4.8

Runtime evidence is positive, including strong battery life and record-setting coverage in one test.

Sanitizing performance
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
5.0

Sanitizing performance is positively supported by praise for hot-water washing and grime control, though evidence centers on the dock.

Self-cleaning cycle
Product 1: Roborock QV 35A Robot Vacuum...
4.8

The self-cleaning mop cycle is a clear strength, with reviewers praising the dock's ability to wash pads effectively.

Product 2: Roborock Saros 20
5.0

Self-cleaning is a standout dock strength, with hot-water mop washing, soaking, drying and easier tray maintenance praised.

Solution / Liquid system
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
3.5

Solution-system evidence is mixed: auto dosing is convenient, but missing solution or fewer detergent tanks drew criticism.

Storage footprint and upright-stand stability
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
3.0

Storage footprint is mixed to negative because the dock is large, even if it can blend in visually.

Streaking / Residue
Product 1: Roborock QV 35A Robot Vacuum...
3.0

Streaking and residue are mixed, with repeated smearing noted after muddy paw-print mopping.

Product 2: Roborock Saros 20
3.4

Residue and streaking are mixed: several reviewers saw even floors, but others reported streaks, gaps, grease or spread stains.

Stuck resistance
Product 1: Roborock QV 35A Robot Vacuum...
3.0

Stuck resistance is mixed: it generally navigates well, but reviewers warn that cables and floor clutter still need prep.

Product 2: Roborock Saros 20
4.2

Stuck resistance is mostly strong, with fewer rescues in many homes, but one review had cable, under-bed and threshold problems.

Suction and Airflow
Product 1: Roborock QV 35A Robot Vacuum...
3.8

Suction is viewed as good enough for daily use and strong for the price, though not a dramatic upgrade over close budget models.

Product 2: Roborock Saros 20
4.6

Suction and airflow are among the strongest attributes, with reviewers repeatedly praising powerful pickup despite a few real-world misses.

Suitability for heavy-duty use
Product 1: Roborock QV 35A Robot Vacuum...
2.5

Heavy-duty mess handling is limited; reviewers say huge muddy messes are outside what this robot should be expected to clean fully.

Product 2: Roborock Saros 20
5.0

Heavy-duty suitability is good for demanding homes and studio-style tests, though not every spill or deep carpet issue was solved.

Suitability for small spaces
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
3.5

Small-space suitability is mixed: the robot's low profile helps, but the dock and launch availability/context limit broader confidence.

Support and Reliability
Product 1: Roborock QV 35A Robot Vacuum...
4.0

Reliability and support are viewed positively overall, with reliable operation and decent support but slower service noted in context.

Product 2: Roborock Saros 20
No score yet
Under-Furniture Pickup
Product 1: Roborock QV 35A Robot Vacuum...
4.0

Under-furniture pickup is positive but limited to furniture with enough clearance.

Product 2: Roborock Saros 20
5.0

Under-furniture pickup is consistently strong because the slim chassis reaches dead zones and still cleans underneath.

Value-for-money
Product 1: Roborock QV 35A Robot Vacuum...
4.6

Value-for-money is the clearest consensus strength, especially when the robot is discounted into the $350-$500 range.

Product 2: Roborock Saros 20
4.0

Value-for-money evidence is moderately positive in one review, but the broader value picture is mixed because of high price.

Versatility
Product 1: Roborock QV 35A Robot Vacuum...
4.5

Versatility is praised because the robot can switch between vacuuming, mopping, and combined vacuum-mop cleaning modes.

Product 2: Roborock Saros 20
4.6

Versatility is strong for mixed flooring, thresholds, carpet, hard floors and automated vacuum/mop modes.

Water tank
Product 1: Roborock QV 35A Robot Vacuum...
4.3

The onboard water tank and water-flow control are praised for keeping mop pads wet and improving everyday mopping.

Product 2: Roborock Saros 20
3.8

Water-tank feedback is mixed: tanks are easy and efficient, but missing fill lines and ongoing refills remain caveats.

Wool carpet compatibility
Product 1: Roborock QV 35A Robot Vacuum...
No score yet
Product 2: Roborock Saros 20
5.0

Wool or delicate carpet compatibility is supported by mop removal protecting valuable rugs, but direct wool testing is limited.