Dreame X40 Ultra Robotic Vacuum

Pros

• Carpet — Medium-Pile Pickup 4.7 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.7
  For embedded debris in carpet, test-driven reviews report above-average deep-clean performance and strong suction delivery. Carpet deep-clean scores are described as near the top tier of current robot vacuums.
• Hard Floor — Large Debris Intake 4.6 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.6
  Large-debris pickup on hard floors is generally strong, with high percentages reported in testing and good real-world pickup. A minor recurring note is that a single pass can miss a few crumbs, which is solvable with extra passes or higher settings.
• Map & Path Efficiency (Robot Vacuums) 4.6 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 7 reviews 4.6
  Navigation and mapping are repeatedly described as top-tier, with fast mapping and strong coverage efficiency. Some testers note occasional pattern quirks, but overall it is seen as reliable at completing whole-home cleans.
• Sanitizing performance 4.6 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.6
  Sanitizing claims are tied mainly to the dock washing mop pads with very hot water (often stated around 158F). Reviews treat this as a hygiene win for the mop pads, not a guarantee of disinfecting the entire floor.
• Pet-Ready Features 4.6 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 4.6
  Pet-oriented features are a highlight: reviewers mention pet zones, avoidance of bowls and toys, and camera-based monitoring (including two-way video in some coverage). Performance with pet hair is more mixed, but overall the feature set is considered very pet-friendly.
• Hard Floor — Fine Dust Pickup 4.6 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.6
  Hard-floor fine debris pickup is described as excellent, with test-style reviews reporting near-perfect results on materials like sand. It is regularly characterized as thorough on hard surfaces.
• Obstacle Avoidance (Robot) 4.6 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 11 reviews 4.6
  Obstacle avoidance is one of the most consistently celebrated strengths, with multiple sources citing camera and structured-light sensing and near-perfect avoidance results. Cables can still be a challenge for any robot, but overall confidence is high.
• Edge & Baseboard Cleaning (Hard Floors) 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 10 reviews 4.5
  Edge and baseboard cleaning is a consistent strength thanks to an extending mop pad and edge-reaching behaviors. Multiple reviewers highlight noticeably better along-the-wall pickup compared with robots that cannot extend to edges.
• Dried-On Stain Removal 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 4.5
  Dried-on mess performance is a standout: multiple reviews describe the spinning mop system and extra-pass behaviors as excellent on sticky or dried spills (such as coffee). It is frequently positioned as among the best moppers in its class.
• Heating element 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 9 reviews 4.5
  A heated mop-wash is repeatedly mentioned, with hot water used in the dock to clean mop pads and the washboard. Reviewers connect the heating to better mop-pad cleanliness and reduced odor.
• Self-cleaning cycle 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 9 reviews 4.5
  The dock self-cleans and maintains the mopping system by washing pads and the washboard and drying with hot air, often with scrapers and repeat-clean logic. This is repeatedly credited for reducing hands-on upkeep and improving hygiene.
• Battery & Charging 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.5
  Battery life is described as long, with a large battery (often cited as 6,400mAh) and support for recharge-and-resume. Reviewers generally expect it to handle larger homes, though thorough mop routines can still take time.
• Under-Furniture Pickup 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.5
  Under-furniture performance is frequently highlighted, especially around the base of cabinets and appliances where hair and debris collect. Extendable side reach behaviors help it pull debris from areas many robots miss.
• Assembly and Setup 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.5
  Setup is generally described as quick, with guided app onboarding and fast mapping runs. Reviewers report it is straightforward to get from unboxing to a usable map.
• Floor Drying Time 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.5
  One test-focused review notes that after cleaning wet spills the floor was not left overly damp, suggesting good water control. In general, the spinning mop system aims to clean effectively without soaking floors.
• Suction & Airflow 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 12 reviews 4.5
  Across reviewers, suction is repeatedly described as flagship-level, with strong debris pickup on both hard floors and carpets. Several sources cite 12,000Pa suction and top-tier vacuuming results, though max power can be loud and auto-empty strength at the dock is not praised by everyone.
• Mopping performance 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 11 reviews 4.5
  Mopping is widely rated as a top-tier strength, driven by spinning pads, edge extension, and options for extra passes on dirtier areas. Some reviewers caution that the most aggressive automated modes can be overkill on delicate finishes until tuned.
• Area Rug Handling 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 9 reviews 4.5
  Carpet and rug handling is often praised because the robot can lift the mops and, in some modes, leave mop pads at the dock to avoid wetting textiles. A dissenting note is that mop hardware can still catch on some carpet edges or that pad removal is not always automatic, so settings matter.
• Innovation compared to competitors 4.5 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 5 reviews 4.5
  Innovation shows up in features like leaving mop pads at the dock, lifting brushes when sensing liquid, edge-extending mops and brushes, camera-assisted stain attention, and sensor-driven re-cleaning. Reviewers frequently call these capabilities differentiators versus simpler robot vacuum-mops.
• Comparative performance 4.4 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 7 reviews 4.4
  In comparisons, the X40 Ultra is often positioned as a top performer, earning high marks for vacuuming, mopping, and obstacle avoidance versus other flagships. A few reviewers note that the very best competitors are close, so the final choice can come down to price and preferred features.
• Stuck resistance 4.4 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.4
  Reviewers report good stuck resistance, including handling taller thresholds (often cited around 22mm) and completing coverage without frequent rescues. As with most robots, extreme clutter can still cause interruptions, but it is rated highly here.
• Mop lifting system 4.4 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 9 reviews 4.4
  The mop system can lift during carpet detection and, in some workflows, leave mop pads at the dock to keep rugs dry. Most reviewers view this as a major advantage, though one notes the lift height may still snag on some carpet edges.
• Ease of use 4.4 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.4
  Ease of use is generally high once set up, with strong automation and helpful app guidance. The main usability complaint is that the app and feature set can feel complex at first.
• Overall opinion 4.4 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 12 reviews 4.4
  Overall sentiment is strongly positive, with several sources ranking it at or near the top among flagship robot vacuum-mops. The most common reservations are the high price, the size of the dock, and mixed reports on pet-hair pickup consistency.
• AI, Smart & App / Automation 4.4 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 11 reviews 4.4
  Automation is a major theme: reviewers cite advanced obstacle avoidance, dirt detection with extra passes, customizable schedules, no-go zones, and pet-focused modes. The tradeoff for all that power is a larger settings surface area, and some reviewers find the app experience less polished.
• Odor control 4.4 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 7 reviews 4.4
  Odor control is generally praised because the dock both hot-washes and hot-dries the mop pads, reducing musty smells. This is repeatedly mentioned as helpful for keeping the system from getting funky between cleanings.
• Dirty water sensor 4.3 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.3
  Some reviews highlight a dirty-water sensing approach that can trigger extra mop-pad washing or a second cleaning pass when the system detects heavier soil. This feature is presented as a meaningful upgrade for messier kitchens and high-traffic areas.
• Corner Cleaning (Robot) 4.3 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 10 reviews 4.3
  Corner cleaning is repeatedly praised thanks to an extendable side brush and edge-focused routines. Reviewers describe better corner reach than robots that rely on a fixed brush setup.
• Carpet — High-Pile Pickup 4.3 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.3
  At least one review notes noticeably strong performance on thicker or higher-pile carpet due to high suction. Keeping carpets dry is helped by vacuum-only modes, mop lifting, or leaving mop pads at the dock, but some testers still caution about mop height when crossing carpet edges.
• Carpet — Low-Pile Pickup 4.3 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.3
  On low-pile carpet, multiple sources report strong pickup and good deep-clean behavior, though stubborn pet fur may require repeat passes. Overall performance is consistently above average for a robot vacuum-mop.
• Clogging & debris prevention 4.2 ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.2
  Hair-cutting and brush-lifting behaviors are cited as practical ways to prevent gunk and tangles, especially when the robot encounters wet patches. Reviewers generally frame these as helpful for keeping the cleaning path cleaner and reducing manual cleanup.
• Docking & Auto-Empty Reliability (Robot) 4.2 ★ ★ ★ ★ ★ ★ ★ ★ ★ 7 reviews 4.2
  Docking and auto-empty are generally described as reliable, with a full-service station that empties dust and maintains the mops. One review flags weaker auto-empty suction and higher bag usage than expected, so performance may vary by debris load and settings.
• Child lock 4.2 ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.2
  A child lock is mentioned as available, helping prevent accidental starts or setting changes. It is treated as a nice-to-have safety feature rather than a core performance driver.
• Bin & Bag 4.1 ★ ★ ★ ★ ★ ★ ★ ★ ★ 7 reviews 4.1
  The dock uses a large disposable dust bag (often cited as 3.2L), reducing how often you deal with dust. However, some reviewers note bag replacement frequency and bag pricing can vary with usage and contribute to ongoing costs.
• Solution / Liquid system 4.1 ★ ★ ★ ★ ★ ★ ★ ★ ★ 5 reviews 4.1
  The solution system is frequently mentioned but described differently across sources: it can wash pads with detergent and, in some coverage, dispense floor-cleaning fluid. At least one reviewer notes detergent may be used mainly for mop-pad washing rather than being mixed into the floor water by default.
• Controls & UI 4.0 ★ ★ ★ ★ ★ ★ ★ ★ ★ 7 reviews 4.0
  The app offers deep controls (maps, zones, schedules, no-go lines, and automation toggles), and many reviewers find it powerful. A recurring downside is UI complexity: some call it clunky or overwhelming until you tune settings.
• Water tank 4.0 ★ ★ ★ ★ ★ ★ ★ ★ ★ 5 reviews 4.0
  The system relies on clean and dirty water tanks in the dock and an internal water tank in the robot, which keeps mopping more automated than vacuum-only robots. Expect periodic refills and dirty-water emptying, and some coverage mentions a future-leaning option for auto fill and drain via plumbing.
• Maintenance requirements 4.0 ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.0
  Maintenance is described as low day-to-day because the dock empties dust and washes and dries mop pads automatically. Owners still need to refill clean water, empty dirty water, replace bags, and occasionally wipe sensors and check brushes.
• Accessories & Tools 4.0 ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.0
  Reviews mention a well-equipped ecosystem with included consumables (bags/cleaning tools/solution) and optional accessories like a hair-cutting roller. Add-ons can improve hair handling but can also add to ownership cost.
• Build quality & durability 4.0 ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.0
  Only a few sources discuss durability directly, but the comments that do are positive, noting robust wearing parts and a generally well-built feel. No review in the file reports major structural failures.
• Streaking / Residue 4.0 ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.0
  Residue and streak control depends on settings: reviewers mention choosing mopping direction or dialing back aggressive modes to avoid over-mopping certain finishes. When configured, most describe clean results without problematic streaking.
• Hair Pickup — Carpets 3.8 ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 3.8
  Carpet hair pickup gets conflicting feedback: some coverage labels it a top option for homes with pets, but at least one lab-style test found only average fur removal in a single run. Multiple passes, higher suction, and the right brush can matter here.
• Hair Pickup — Hard Floors 3.8 ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 3.8
  Hair pickup on hard floors is mixed: some reviewers call it excellent for pet hair, while at least one test-focused review found it left a meaningful amount behind without multiple passes. Expect best results with tuned settings and the right brush configuration.
• Hair‑Wrap / Tangle Resistance 3.8 ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 3.8
  Tangle resistance is also mixed: long hair can still wrap around the main roller in some reports, but anti-tangle side-brush design and optional hair-cutting rollers are described as effective upgrades. Cleaning hair out is generally considered manageable.