Dreame L40s Ultra
Robot Vacuums

L40s Ultra

Dreame

Released Jan 1, 2025 · Analysis updated Feb 13, 2026

Robot vacuum with strong suction, self-cleaning dock, and large water tanks for mopping, covering over 2400 sq ft per charge. The Dreame L40s Ultra scores 82/100 based on 7 expert reviews in the robot vacuums category. Coverage includes reviews from Toptenreviews, Kubotonline, Vacuumwars, and Robot-review.

Critic Score

What's this?
82

based on 7 expert reviews

ToptenreviewsKubotonlineVacuumwarsRobot-reviewT3+2 more

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Pros

  • Excellent suction power(2)
  • Advanced self-cleaning and drying dock(2)

Cons

  • Bulky and unattractive dock(2)
  • High price(2)

7 Expert Reviews

98
Feb 5, 2025

Exceptional cleaning performance, advanced navigation, and smart features make the L40 a market standout

93
Nov 18, 2025

The Dreame L40s Ultra delivers flagship-level cleaning performance at a competitive price, outperforming even more expensive models in multiple tests.

87
Oct 10, 2025

The Dreame L40s Ultra AE emerged as the standout model in the L40s series, offering the best combination of cleaning power, smart navigation, and obstacle avoidance at a lower price than the Ultra.

87

The Dreame L40s Ultra delivers flagship cleaning performance and genuine hands-off convenience with exceptional suction and self-maintaining dock, though it trades off camera-based obstacle avoidance ...

85
Jan 2, 2025

The Dreame L40 Ultra is a cleaning powerhouse, combining top-notch vacuuming and mopping with a dock that takes care of all the messy work for you.

75
Jun 21, 2025

The Dreame L40s Ultra robot vacuum has excellent suction power and can climb small steps, but has some issues with mapping and occasionally drags wet mops over carpets.

50
Jan 15, 2026

The Dreame L40s Ultra Robot Vacuum doesn't blow me away with performance, bouncing between sub-par and okay rather than great, though it excels at navigating obstacles in complicated homes.