Robot Vacuum Comparison · UK 2026
Dreame X40 Ultra Complete vs Dreame L40s Pro Ultra

Specs, pros and cons compared side by side

Both the Dreame X40 Ultra Complete and the Dreame L40s Pro Ultra 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 for the L40s Pro Ultra come from Dreame’s UK manual, with figures from Dreame’s UAE store page.

Quick verdict

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Dreame X40 Ultra Complete

Pick it for: 6,400mAh battery (the L40s Pro Ultra: 5,200mAh) · Extra Accessories Kit: 12 mop pads, 3 dust bags, 3 filters and spare brushes (not in the L40s Pro Ultra box)

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Dreame L40s Pro Ultra

Pick it for: 19,000Pa suction (the X40 Ultra Complete: 12,000Pa) · 75°C mop wash (the X40 Ultra Complete: 70°C) · Shorter charge, about 3.5 hours (the X40 Ultra Complete: about 4.5)

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Quick comparison

Spec Dreame X40 Ultra Complete Dreame L40s Pro Ultra
Suction 12,000Pa 19,000Pa
Navigation LDS + 3D structured light, 120+ object types Pathfinder LDS + 3D dual-line laser, AI cameras
Mopping MopExtend RoboSwing (4 cm), 10.5 mm lift, mop removal Extending mops (4 cm), 10.5 mm lift, mop removal
Dock Empty (3.2L bag, 75 days), 70°C wash, hot-air dry, refill, solution Empty, 75°C wash, hot-air dry, refill, solution
Runtime Not stated Up to 125 min (vacuum and mop, quiet)
Smart home Alexa, Siri, Google Alexa, Siri, Google (OK Dreame by update)
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 L40s Pro Ultra

Pros

  • 75°C hot-water mop wash
  • Climbs double-layer steps up to 40 mm
  • AI HD and IR cameras with an LED light
  • 125 minutes of vacuuming and mopping (quiet)

Cons

  • Plumbed-in refill and drain needs the separate water hookup kit
  • Built-in “OK, Dreame” voice control only comes with a later update
  • Dreame doesn’t list Matter support

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Which should you buy?

Why choose the Dreame X40 Ultra Complete

  • 6,400mAh battery (the L40s Pro Ultra: 5,200mAh)
  • Extra Accessories Kit: 12 mop pads, 3 dust bags, 3 filters and spare brushes (not in the L40s Pro Ultra box)
Why choose the Dreame L40s Pro Ultra

  • 19,000Pa suction (the X40 Ultra Complete: 12,000Pa)
  • 75°C mop wash (the X40 Ultra Complete: 70°C)
  • Shorter charge, about 3.5 hours (the X40 Ultra Complete: about 4.5)

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