Compare Dreame X40 Ultra Robotic Vacuum vs Eufy S2 Omni

The optional anti-tangle accessory is described as a worthwhile add-on for households dealing with hair.

The package includes useful starter supplies such as cleaning solution, fragrance modules and a spare dust bag. The extras make the initial setup more complete.

The adaptive chassis lift is highly effective on thick rugs and carpet transitions. It raises the body, increases suction and reduces the chance of becoming stranded.

Design sentiment is lukewarm: one reviewer called the look dated or industrial, while another saw it as familiar rather than striking.

The translucent top, glowing ring and slim tower give the S2 a distinctive premium look. Its design feels more like modern home technology than a bulky cleaning appliance.

Reviewers generally praise the app, AI, mapping, virtual boundaries, customization, live-view, and automation, though one found the app clunky.

The app offers clear maps, schedules, room controls and adjustable cleaning settings. Core automation works well, although smart-home commands and advanced customization trail some rivals.

The powerful fan can blow light hair or fine debris away before pickup. This was most noticeable with loose cat hair during controlled hard-floor testing.

Carpet and rug handling is a strength because the X40 can lift or leave mop pads behind to reduce wet-carpet risk.

The S2 handles area rugs exceptionally well, climbing thicker piles while avoiding tassels and lightweight mats. It is less likely to bunch, drag or become trapped by rugs.

Setup is consistently described as quick, simple, or easy to get running.

Setup is consistently described as simple: assemble the ramp, fill the tanks, scan the app code and map the home. Most users can start cleaning within minutes.

Battery and charging impressions are positive, with long runtime and large-floor-plan coverage repeatedly highlighted.

Battery performance depends heavily on suction mode, and maximum power sharply reduces coverage. Recharge times around five hours are slow for a flagship robot.

The large dust bag earns praise, but one long-term user found the bag needed changing more often than expected.

The dock’s disposable bag can hold roughly two months of debris, reducing how often it needs attention. That supports the S2’s hands-off appeal.

Build quality is supported by durable consumables that reviewers said did not need frequent replacement.

The robot and dock feel solid, well assembled and appropriately premium. Long-term testers reported no meaningful loss of structural quality.

Thicker carpet feedback is positive, with strong suction leaving carpets feeling thoroughly cleaned.

High-pile performance is much improved, with effective chassis lifting and strong suction on plush rugs. Deep agitation is not class-leading in every test, so carpet-focused homes should weigh that tradeoff.

Low-pile/conventional carpet pickup is good to strong, though not flawless.

Low-pile carpet pickup is very good, including ordinary dust, crumbs and pet hair. It cleans these surfaces confidently without the mobility problems of the older model.

Medium-pile and deep-clean testing is consistently above average, especially against the previous X30.

Medium-pile carpet pickup is consistently strong, including embedded dirt and pet hair. It performs close to the better carpet-focused robots in normal use.

Child lock is useful for preventing accidental dock commands, but it also limits the convenience of the touchscreen. Households with children may rely more heavily on the app.

Anti-tangle and clog-prevention comments are positive, especially when the TriCut brush is used.

The multi-cyclone system prevents fine dust from rapidly clogging the filter. Suction stayed strong even after substantial debris collection.

Comparative evidence is mostly favorable, with X40 outperforming older Dreame models and ranking near the top, though one suction claim was viewed skeptically.

Compared with its predecessor and current flagships, the S2 clearly improves hair handling and carpet mobility. It is less dominant in deep-carpet agitation, software features and value.

Controls and UI are feature-rich and highly customizable, but the app can feel clunky in places.

The dock display and app controls are clear, responsive and easy to understand. Angled controls and visible status information reduce the need to bend down or guess what the robot is doing.

Corner cleaning is one of the clearest strengths thanks to the extendable side brush and edge-reaching mop behavior.

The extending side brush improves corner pickup and often reaches debris that fixed brushes miss. Results depend on how aggressively the robot approaches the wall.

Strong airflow reaches dust and litter in hardwood seams and floor grooves. This is a meaningful advantage on textured or imperfect hard floors.

The multi-cyclone system is a standout innovation, separating debris before it reaches the filter. It preserves airflow and keeps suction close to day-one strength through extended use.

Dirty-water sensing is praised as a useful advanced base-station feature that can trigger additional cleaning.

Dirty-water sensing can trigger an additional cleaning pass when the extracted water remains heavily soiled. This adds useful automation for messier rooms.

Auto-empty reliability is mixed because the dock is capable but one reviewer found its suction weak.

The UniClean station is consistently praised for reliable emptying, mop washing, drying, refilling and detergent dosing. It is among the most complete and dependable docks in the category.

Dried-on stain removal is repeatedly praised, especially for coffee, grape juice, and sticky messes.

Dried-stain removal is generally strong on everyday sauce, coffee, paw prints and jam, but tougher controlled tests produced mixed results. It is effective routine mopping rather than a guaranteed replacement for heavy scrubbing.

Ease of use is high overall, with minimal maintenance and dependable operation recurring across reviews.

Everyday use is straightforward once the home is mapped. Clear controls, scheduling and extensive dock automation let the robot operate with little supervision.

Baseboard and edge cleaning are repeatedly praised, with reviewers saying the extending brush and mop reach areas rivals miss.

Edge performance varies more than the central cleaning results. Some units clean close to baseboards, while others leave visible gaps because the robot rides too far from walls.

Edge-following accuracy is strong where reviewers saw the X40 actually reach into corners and edges well.

Edge-following accuracy is inconsistent, with some runs leaving an obvious perimeter gap. More app control over wall distance and brush deployment would improve results.

The dock's emptying and mess-control system is broadly convenient, although auto-empty suction is not universally perfect.

The self-empty dock handles dense hair and packed debris without clogging in normal use. An overfilled bin may occasionally require a second empty cycle.

The app’s service timers clearly show when filters, brushes and other consumables need attention. This is easier than tracking maintenance manually.

Cyclonic separation keeps the filters unusually clean and contains fine dust effectively. Several extended-use tests found little visible buildup or suction loss.

Wet-spill tests left floors dry enough that one reviewer found no visible dampness after cleaning.

The floor remains lightly damp after mopping but not dangerously wet. Drying is reasonable for routine hard-floor cleaning.

The main roller/floorhead design is a rare weak point because hair pickup did not fully satisfy one tester.

The mop can leave floors shiny after routine cleaning.

Mopping left hard floors visibly clean, glossy and pleasant underfoot. The finish was especially impressive on kitchens, hallways and other high-traffic hard surfaces.

Fresh wet spills were handled very well, with little sign left after the robot cleaned.

The continuously cleaned roller is particularly effective on fresh spills because it extracts liquid instead of spreading it. Wet messes are one of the system’s best use cases.

Hair can collect in a crevice near the wheelbase, though removal was manageable.

The center hair channel works as intended, directing strands toward the suction port instead of trapping them. Test rollers remained nearly free of wrapped hair.

Carpet hair pickup is weak relative to the product's price, with only about half of test hair collected.

Carpet hair pickup is consistently strong, with excellent results on pet fur and long hair. The detangling design trades a little peak agitation for far less maintenance.

General hair pickup is acceptable to good in some reviews, but it is not consistently excellent.

Hard-floor hair pickup is excellent, including long human hair and pet fur. The debris moves cleanly into the suction path instead of wrapping around the rollers.

Hair-wrap resistance is mixed: standard brushes can tangle, but anti-tangle design and optional accessories reduce maintenance.

Hair resistance is one of the strongest areas of agreement. The split DuoSpiral brush routinely finishes long-hair and pet-heavy cleaning with little or no wrapping.

Hard-floor fine-debris pickup is consistently strong, with only minor misses in some tests.

Fine-dust pickup is strong overall, helped by sustained airflow and effective filtration. Fast side brushes can scatter light particles on the first pass before the robot recovers them.

Large hard-floor debris intake is strong overall, despite occasional missed cereal pieces.

The S2 handles mixed debris well, but grouped cereal and other bulky pieces can expose inconsistent approach behavior. Most remaining debris is recovered with additional coverage.

Low-light operation is reliable enough for overnight or early-morning cleaning. The robot can navigate dark rooms without needing the household lights turned on.

Hot-water cleaning and heated drying are viewed as useful for mop hygiene and maintenance.

Heated mop washing and hot-air drying improve roller hygiene and reduce lingering moisture. The dock prepares a cleaner mop for the next run with little manual effort.

Reviewers see the X40 as highly innovative, especially for Dreame-only mop-pad handling, sensors, and feature density.

The built-in fragrance module and onboard multi-cyclone system distinguish the S2 from most competitors. Both features make the product feel genuinely different rather than merely more powerful.

Busy family and kid-mess suitability is positive because the robot can handle toys, crumbs, mud, and obstacle-filled rooms.

The sanitized mopping system and strong avoidance of cords and household clutter make the S2 appealing for families. Cleaner floors provide extra reassurance where children play.

Large debris handling is strong overall, but not perfect in all carpet and hard-floor tests.

Large debris pickup is usually immediate and controlled, though some tests found cereal pieces scattered or avoided. A second pass may be needed for grouped bulky debris.

The robot earns limited low-profile credit for reaching under lips of low furniture, though the dock itself is not compact.

The robot fits under most ordinary furniture despite its advanced sensors. Its low profile expands useful cleaning coverage in bedrooms and living areas.

Maintenance is relatively low for a premium robot, though water tanks, consumables, and periodic upkeep still remain.

Maintenance is generally low because the dock washes, dries and empties automatically, while cyclonic filtration keeps parts cleaner. Roller trays and dirty-water tanks still need periodic rinsing.

Maneuverability is excellent, with strong navigation, threshold handling, and reliable movement around obstacles.

Movement is smooth and responsive, without the jerky corrections seen in some robots. It transitions through rooms and around furniture confidently.

Mapping and path efficiency are strong overall, with detailed maps and near-perfect coverage, but one tester found the pattern erratic.

Mapping is fast and generally accurate, with useful 3D room and furniture recognition. Path efficiency is less consistent, and some tests found slower routes or unnecessary circling near complex edges.

The mop-lifting and mop-drop system is a standout carpet-protection feature, though limited lift height caused occasional carpet-edge issues.

The 28 mm mop lift protects most carpets and supports mixed-floor cleaning in one run. Very thick carpet can still make light contact because the measured lift includes suspension travel.

Mopping performance is one of the X40's strongest areas, with repeated praise for rotating pads, tough stains, and overall results.

Mopping is the product’s signature strength, producing clean, streak-free hard floors with continuous fresh water and firm downward pressure. Difficult grout and severe dried stains can still require manual work.

Noise is a downside; reviewers said it is louder than average and distracting during work.

The robot is acceptable on lower settings but becomes noticeably loud at maximum suction. Buyers sensitive to noise will likely prefer scheduled daytime runs or reduced power.

Obstacle avoidance is a standout, with multiple reviewers praising AI recognition, pet-accident avoidance, and reliable object navigation.

Obstacle avoidance is usually excellent, including cords, pet waste and small household objects. A few tests still found collisions with dark items, toys or objects encountered immediately after a threshold.

Odor control is strong because hot washing and drying help prevent musty mop-pad smells.

The fragrance system is polarizing: some homes noticed a pleasant, subtle freshness, while others could barely detect it. Dirty-water odors still require regular tank rinsing.

Ownership costs are a notable drawback because consumables and bags add ongoing expense.

Ownership costs can be high once replacement bags, filters, fragrance modules and heavier maintenance are considered. Budget-focused buyers may find simpler systems cheaper to run.

Overall convenience is high, mainly because the X40 reduces manual vacuuming, mopping, and deep cleaning.

The automated dock, schedules, self-cleaning mop and reliable mapping make daily cleaning exceptionally convenient. Most routine work is reduced to servicing water tanks and consumables.

Longevity evidence is limited but positive for wearing parts that reviewers found robust.

The S2 maintained strong suction and cleaning consistency through weeks or months of frequent use. Its durable feel and low performance decay inspire confidence for long-term ownership.

Overall opinion is strongly positive across reviews, with the X40 often described as top-tier or hard to beat.

The S2 earns broad praise for suction, mopping, hair handling and dock automation. Its premium price, inconsistent edge work and uneven navigation keep it from being the best fit for every home.

Pet readiness is mixed: pet zones and accident avoidance are excellent, while fur pickup can disappoint.

Pet owners benefit from excellent hair pickup, minimal brush tangling and a dock that can move dense fur without clogging. The sanitizing mop system also suits homes where pets track in dirt.

Price is the most common caveat; reviewers call it expensive but often justify it with performance and automation.

The flagship price is the most consistent hesitation. Strong cleaning and automation help justify it, but several less expensive robots deliver similar results in selected areas.

Cloud-dependent integration limits fully local privacy and control. Native Matter support provides a partial workaround for smart-home users.

Runtime is well suited to larger homes and single-run coverage.

Runtime ranges from adequate to disappointing depending on power level. Large homes may see a recharge interruption, especially when maximum suction is used.

Sanitizing performance is supported by hot-water mop cleaning that reviewers linked to killing bacteria.

Electrolyzed water, hot washing and continuous roller cleaning give the S2 unusually strong hygiene features. The system is especially appealing for homes with children or pets.

Repeatedly getting trapped beneath one console caused visible scratches on the front. Homes with low, tight furniture may need a no-go zone to protect the finish.

Self-cleaning is a major strength, with hot mop washing, drying, dock cleaning, and low-maintenance routines.

The roller is washed continuously while mopping and then cleaned and dried again at the dock. This keeps it fresh, reduces smearing and minimizes hands-on mop care.

Frequent firmware updates improved the pre-release unit and addressed reported quirks. Ongoing software refinement appears to be a meaningful part of the product’s support.

The liquid system is useful and partly non-proprietary, but one reviewer noted solution is not always mixed into onboard floor water.

Automatic detergent dosing and controlled water delivery keep the mopping system supplied without manual measuring. The liquid system supports consistent cleaning across scheduled runs.

Cliff detection handled stair edges safely during testing. The robot navigated upper levels without attempting a dangerous drop.

The dock's footprint is a repeated drawback because it is large and needs accessible placement.

The tall tower dock is narrower and easier to service than many wide stations, but it needs considerable vertical wall space. It works best where height is less restrictive than floor width.

Residue and streak evidence is mostly positive, with reviewers using settings to minimize streaks and reporting shiny floors.

Hard floors usually dry without visible streaks or residue. Controlled water output and the continuously cleaned roller leave a consistent finish.

Stuck resistance is excellent, with reviewers comfortable leaving it alone and reporting little need for rescue.

The lifting chassis handles normal thresholds and thick rugs well, but unusual obstacles and very tall transitions can cause hesitation. Low furniture is another occasional trapping risk.

Suction and airflow are consistently praised as powerful, high-performing, and above average, though one setting limitation was noted.

Suction is the S2’s clearest strength, with strong pickup across hard floors, rugs and embedded carpet debris. Multiple long-term tests also found that airflow stayed consistent as the bin and filter accumulated dust.

Heavy-duty suitability is good for demanding messes, pets, and mixed household cleaning.

The S2 handled tens of thousands of square feet and many hours of daily cleaning with little performance decline. It is well suited to frequent, demanding use.

Small-space suitability is limited by the large dock, even though the robot itself navigates well.

The robot itself fits beneath much furniture, but the tall dock and occasional navigation trouble in tight nooks make it less ideal for compact homes. Small apartments may also find the system excessive.

Reliability is a core strength: reviewers trusted it to finish jobs and called it dependable.

Reliability is mixed: firmware support has been active, but early recall concerns and occasional app disconnects temper confidence. The short warranty also feels conservative for such an expensive machine.

Surface safety is good around wet spots and carpet/rug protection because the robot avoids spreading liquid or damp pads.

Tool and pad changes are easy thanks to magnetic mop pads and straightforward accessory handling.

Under-furniture pickup is strong where the side brush and mop reach under appliances and low furniture edges.

The robot’s low body reaches beneath beds, chairs and many cabinets while continuing to navigate reliably. It performs useful cleaning in places that are awkward to reach manually.

Value is mixed-to-positive: costly upfront, but reviewers often found the automation and feature set worth it.

Value depends strongly on priorities. It makes sense for frequent hard-floor mopping and heavy hair, but cheaper robots can match parts of its performance with less maintenance.

Versatility is high across hard floors, carpets, rugs, mopping, vacuuming, pet features, and customized room cleaning.

The S2 works well across hard floors, short carpet, medium carpet and many rugs. Its vacuum-and-mop design makes it a strong all-rounder for mixed-floor homes.

Visible tank levels and app alerts make it easy to know when clean water is low or dirty water needs attention. This reduces interrupted cleaning sessions.

Water-tank feedback is generally positive for capacity and separation, though refilling and emptying still remain part of ownership.

The water tanks are easy to access and generously sized, but heavy mopping can require refilling and emptying every few runs. Large single-floor homes may need more frequent tank service.