Robot Vacuum Comparison · UK 2026
Dreame X40 Ultra Complete vs Dreame X50 Ultra Complete

Specs, pros and cons compared side by side

Both the Dreame X40 Ultra Complete and the Dreame X50 Ultra Complete are robot vacuums with self-cleaning base stations. This head-to-head sets them side by side using the specs, pros and cons from our full reviews. Dreame specs for the X40 Ultra Complete come from Dreame’s UK manual, with figures from Dreame’s US store page; Dreame specs come from Dreame’s own UK pages and manuals.

Quick verdict

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Dreame X40 Ultra Complete

Pick it for: Spot cleaning button on the robot (the X50 Ultra Complete: Power/Clean and Dock buttons only)

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Dreame X50 Ultra Complete

Pick it for: 20,000Pa suction (the X40 Ultra Complete: 12,000Pa) · 80°C mop wash (the X40 Ultra Complete: 70°C) · Matter support (the X40 Ultra Complete: Alexa, Siri, Google)

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Quick comparison

Spec Dreame X40 Ultra Complete Dreame X50 Ultra Complete
Suction 12,000Pa 20,000Pa
Navigation LDS + 3D structured light, 120+ object types Retractable VersaLift DToF + 3D structured light
Mopping MopExtend RoboSwing (4 cm), 10.5 mm lift, mop removal MopExtend RoboSwing (4 cm), 10.5 mm lift, mop removal
Dock Empty (3.2L bag, 75 days), 70°C wash, hot-air dry, refill, solution Empty (3.2L bag), 80°C wash, hot-air dry, refill, solution
Runtime Not stated Up to 220 min (quiet)
Smart home Alexa, Siri, Google Alexa, Google, Siri, Matter
Dreame X40 Ultra Complete

Pros

  • 70°C mop wash with four temperature levels
  • Avoids more than 120 types of object
  • Leaves its mops on the base station for vacuum-only cleans
  • Spare-parts kit with 12 mop pads and 3 dust bags

Cons

  • The TriCut brush is sold separately
  • Dreame doesn’t give a runtime
  • Its manual says it can’t climb thresholds higher than about 2 cm
Dreame X50 Ultra Complete

Pros

  • Retractable sensor for low furniture
  • Climbs two-step thresholds up to 6 cm
  • 80°C mop wash with four temperature settings
  • Up to 220 minutes of runtime

Cons

  • Plumbed-in refill and drain needs the separate water hookup kit
  • Takes about 4.5 hours to charge

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Which should you buy?

Why choose the Dreame X40 Ultra Complete

  • Spot cleaning button on the robot (the X50 Ultra Complete: Power/Clean and Dock buttons only)
Why choose the Dreame X50 Ultra Complete

  • 20,000Pa suction (the X40 Ultra Complete: 12,000Pa)
  • 80°C mop wash (the X40 Ultra Complete: 70°C)
  • Matter support (the X40 Ultra Complete: Alexa, Siri, Google)

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