Dreame X40 Ultra Robotic Vacuum

Best Robot Vacuums 2025 [50 Tested.. ONE Dominated Every Test!]

What We Loved

• Customizing room cleaning behaviors
  customize modes and set special pet zones
• Dirt detective
  Omni dirt detection can identify stubborn messes
• Front-facing camera
  uses 3D structured light with a built-in camera and LED light to map out spaces
• Mapping/navigation accuracy (robotics)
  map out spaces with 100% accuracy
• Mop detachability
  removable and liftable mop can lift the whole device 10.5 mm off the ground and keep your carpets dry when mopping
• No-go-zone / virtual-wall precision (robots)
  set no-go zones for rugs or anything else to avoid any mishaps
• Overall opinion
  doesn't just glide over dirt around your place it tackles it head on
• Side brush extension
  extendable side brush will dive right into those spots
• Smart scrubbing
  activate the mop extend Robo swing to scrub deeply
• Suction power (air watts)
  12,000 pascals of suction power is more than any robot cleaner on this list

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What We Loved

• Base station features
  makes it pretty easy to get the water out without having to bend over
• Cleaning performance on hard floors
  all do a great job cleaning hard surfaces
• Customizing room cleaning behaviors
  a lot of configurability so you can choose if you want to vacuum only, vacuum and mop
• Drying function
  auto air drying with hot air
• Dust-bin emptying
  empties onto a bag on the dock
• Ease of use
  only need to add clean water and take out the dirty water
• Edge mopping system
  mop pad extends to the side and is very useful in corners
• Hot water cleaning
  hot mop washing means they rinse with hot water
• Mapping/navigation accuracy (robotics)
  do pretty well
• Mobile-app functionality & reliability
  apps are pretty solid
• Mop detachability
  pop off really simply because they are magnetically attached
• Mopping performance (robotic or wet-dry)
  no trouble with normal stains and they do a really good job with an average amount of dirt
• No-go-zone / virtual-wall precision (robots)
  have each vacuum in a specific Zone
• Obstacle & cliff avoidance (robots)
  do absolutely fine with larger objectsnone are perfect at avoiding power cords
• Pet-hair pickup efficiency
  effective with sand cereal sprinkles and pet hair
• Recommended maintenance interval
  usually every 60 days or so
• Retractable LiDAR system
  uses cameras and lidar
• Scheduling feature
  you can schedule with all of them
• Self-emptying base
  auto self-emptying when the robot comes back from doing his job
• Solution application
  ability to use a mopping solution
• Spinning mop pads
  use spinning mop pads

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What We Loved

• Automatic suction adjustment (dirt sensing)
  carpet boost or dirt detect where they can boost suction automatically to save on battery life
• Extendable mop pads
  mops to extend to clean edges and Corners automatically
• Front-facing camera
  go find your pets and video call with them
• Generic Performance
  very good for basic sweeping of hard floors and carpets
• Mobile-app functionality & reliability
  virtual barriers where you can draw lines or boxes on the map in the app to keep them from going places you don't want them to go
• Mop detachability
  pads that will lift up when they sense carpets so as not to get your carpets damp
• Mopping performance (robotic or wet-dry)
  for a much better mopping performance
• Obstacle & cliff avoidance (robots)
  recognize household objects and avoid them
• Self-cleaning mop function
  wash the mop pads dry
• Self-emptying base
  Auto empty docks

Just Okay

• Airflow (CFM)
  raw power like their suction and air flow
• Carpet deep clean performance
  embed sand into medium pile carpet and run it on max power for a set amount of time
• Coverage efficiency (how completely a robot covers a floor)
  area they covered divided by how long it took them to complete it
• Crevice‑cleaning effectiveness
  crevice pickup test which helps us to measure their power as well as their seal on hard floors
• Customizing room cleaning behaviors
  lots of options for customizing room cleaning behaviors
• Fast mapping
  fast mapping
• Liquid/spill pickup (wet-dry models)
  wet stains
• Mapping/navigation accuracy (robotics)
  using either cameras called vslam or lasers called lar to map and navigate around your house in an efficient manner
• Suction power (air watts)
  raw power like their suction and air flow

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What We Loved

• Baseboard cleaning feature
  mop that extends to baseboards and gets into Corners
• Drying function
  dries it with hot air
• Hot water mop washing
  washes the mop with hot water
• Obstacle & cliff avoidance (robots)
  great obstacle avoidance
• Self-emptying base
  Auto empties the dust canister
• Suction power (air watts)
  good suction

Needs Improvement

• Price
  nearly $22,000

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What We Loved

• Battery runtime / Charging time
  battery life on the L40 is a little bit lower
• Clean water tank
  it's got clean water tank dirty water tank
• Debris pickup performance
  this one does the best job at vacuuming
• Dirt-detection sensor accuracy (robotic)
  it has the same dirt Sense Technology when it mops a floor it comes back and it does a second cleaning
• Front-facing camera
  nice sensor takes pictures takes videos
• Mapping/navigation accuracy (robotics)
  Light R navigation is an absolute must
• Mobile-app functionality & reliability
  you can vary that in the app you can say don't be that loud
• Obstacle & cliff avoidance (robots)
  Obstacle voidance is actually really good
• Self-cleaning cycle effectiveness
  it has these selfcleaning scrapers
• Self-cleaning mop function
  it's going to wash the mop pads with hot water
• Self-emptying base
  Auto empty it
• Solution tank capacity
  we have a solution tank you put the dream solution in there it mixes it

Just Okay

• Bag-replacement ease (if bagged)
  it's got a dust bag it's going to suck everything up
• Noise level
  it is going to be a little loud

Needs Improvement

• Aesthetic design & finish
  appearance now is kind of old
• Solution application
  when it fills the internal water tank it doesn't use the solution

Dreame X40 Ultra Review - I Was Wrong!

What We Loved

• Airflow (CFM)
  significantly higher in our suction and airflow tests
• Auto-resume after recharge (robotic)
  recharge and resume and fast charging
• Battery runtime / Charging time
  6,400 milliamp hours which dream says can get 194 minutes on low power
• Cleaning performance on carpet
  higher than average
• Cleaning performance on hard floors
  had a nearly perfect showing with pickup with everything from fine to extra- llarge debris on both surface types
• Edge-cleaning effectiveness
  worked decently in our tests
• Large-debris pick-up
  extra- llarge debris
• Mapping/navigation accuracy (robotics)
  covering our new floor plan with near perfect coverage and without getting stuck
• Mobile-app functionality & reliability
  its app is fully loaded App and increasingly easy to use
• Mop detachability
  just leave the mop pads on the base to avoid getting carpets wet
• Mop lifting system
  lifts up its mop pads when it senses carpets 10.5 mm to avoid getting carpets wet
• Mopping performance (robotic or wet-dry)
  I was extremely impressed with things like the dried on coffee and dried on grape juice tests
• Obstacle & cliff avoidance (robots)
  the x40 was the second Robot vacuum we've ever tested to get a perfect score
• Pet-hair pickup efficiency
  did good Hair Pickup with pet and human hair pickup
• Self-cleaning mop function
  automatically was washes its mop pads with hot water
• Self-emptying base
  automatically empties its dust bin into a huge 3.2 L disposable bag
• Suction power (air watts)
  12,000 pascals of suction

Needs Improvement

• Hair-wrap prevention / anti-tangle tech
  did get longer hair Tangled in its brush which is unfortunately very typical
• Price
  most expensive Robot vacuum I've tested so far

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What We Loved

• Automatic suction adjustment (dirt sensing)
  auto adjusts the suction when it detects carpet
• Cleaning performance on carpet
  does a pretty good job on the two remaining carpeted rooms in my house especially because it auto adjusts the suction when it detects carpet
• Cleaning performance on hard floors
  suck up most of the debris off your floor
• Edge-cleaning effectiveness
  side sweeper arm out to get all those tight corners and under kitchen appliances
• Hair-wrap prevention / anti-tangle tech
  any hairs get tangled around the brush they just get sliced in half by a tiny little blade inside the brush and just sucked through
• Mobile-app functionality & reliability
  fine-tune every single room and how it's cleaned
• Mop lifting system
  choose to either lift the mop pads when vacuuming low pile carpet or automatically detach them at the base station to completely remove the risk of getting your carpet wet
• Mopping performance (robotic or wet-dry)
  The robot literally does it better than I can
• Obstacle & cliff avoidance (robots)
  obstacle avoidance has also come a long way too especially over the last year or two
• Self-cleaning mop function
  the robot will go back to the base station and clean these mop pads frequently rather than just dragging the same dirty pads all over your floors
• Under-furniture clearance
  under kitchen appliances
• Value-for-money
  it was a no-brainer at about five or six bucks a week
• Water tank capacity
  every few days I refill the clean water tank and empty the dirty water tank

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What We Loved

• Edge-cleaning effectiveness
  Liftable side brush reaches hard-to-reach edges
• Mobile-app functionality & reliability
  App lets you control where and how it cleans
• Mop lifting system
  Liftable mop protects carpets from moisture damage
• No-go-zone / virtual-wall precision (robots)
  Customizable virtual boundaries via the app
• Self-cleaning mop function
  Self-cleans mop & washboard at 158 °F to cut stains and odors
• Suction power (air watts)
  12,000 Pa suction tackles deep dirt