Robot Vacuum Comparison · UK 2026
Dreame L40s Pro Ultra vs Dreame L40 Ultra AE

Specs, pros and cons compared side by side

Both the Dreame L40s Pro Ultra and the Dreame L40 Ultra AE 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 L40s Pro Ultra come from Dreame’s UK manual, with figures from Dreame’s UAE store page; Dreame specs for the L40 Ultra AE come from Dreame’s UK store page.

Quick verdict

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Dreame L40s Pro Ultra

Pick it for: Same 19,000Pa and 75°C wash, with a HyperStream DuoBrush (the L40 Ultra AE: rubber and TriCut brushes)

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Dreame L40 Ultra AE

Pick it for: Same 19,000Pa and 75°C wash, with a TriCut hair-cutting brush (the L40s Pro Ultra: HyperStream DuoBrush)

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Quick comparison

Spec Dreame L40s Pro Ultra Dreame L40 Ultra AE
Suction 19,000Pa 19,000Pa
Navigation Pathfinder LDS + 3D dual-line laser, AI cameras AI action + 3D structured light, camera
Mopping Extending mops (4 cm), 10.5 mm lift, mop removal Liftable pads (10.5 mm), Flexible MopExtend
Dock Empty, 75°C wash, hot-air dry, refill, solution Empty (3.2L bag, 100 days), 75°C wash, hot-air dry, refill, solution
Runtime Up to 125 min (vacuum and mop, quiet) Up to 180 min
Smart home Alexa, Siri, Google (OK Dreame by update) Alexa, Siri, Google, Apple Watch
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
Dreame L40 Ultra AE

Pros

  • 75°C hot-water mop wash
  • Up to 180 minutes of cleaning
  • TriCut brush with a built-in hair-cutting blade
  • Camera and LED light for obstacle detection in dark areas

Cons

  • Plumbed-in refill and drain needs the separate water hookup kit
  • Dreame UK doesn’t give a climbing height
  • Dreame UK doesn’t list Matter support

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Which should you buy?

Why choose the Dreame L40s Pro Ultra

  • Same 19,000Pa and 75°C wash, with a HyperStream DuoBrush (the L40 Ultra AE: rubber and TriCut brushes)
Why choose the Dreame L40 Ultra AE

  • Same 19,000Pa and 75°C wash, with a TriCut hair-cutting brush (the L40s Pro Ultra: HyperStream DuoBrush)

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