Best Robot Vacuums is reader-supported. When you buy through links on our site, we may earn a commission. Details.
We may earn a commission when you buy through links on this page. Learn more.
Dreame L40s Ultra vs Dreame X40 Ultra
The Dreame X40 Ultra wins with a score of 8.4/10. Best for: Mid-to-large hard-floor homes wanting flagship mopping at a discount.
Dreame L40s Ultra
0.0/10$800
Winner
Dreame X40 Ultra
8.4/10$900
Last-gen flagship with class-leading mopping, now half its launch price.
Read full reviewScore Comparison
Dreame L40s UltraDreame X40 Ultra
Overall
—8.4
Hard Floor
—9.2
Carpet
—8.5
Mopping
—9.4
Navigation
—8.6
Noise
—7.5
Smart Features
—8.3
Maintenance
—7.8
Specifications
| Dreame L40s Ultra | Spec | Dreame X40 Ultra |
|---|---|---|
| $800 | Price | $900 |
| 16000 | Suction (Pa) | 12000 |
| — | Battery (mAh) | 6400 |
| — | Noise (dB) | 65.0 |
| — | Dustbin (ml) | — |
| — | Water Tank (ml) | — |
| — | Mop Lift (mm) | — |
| — | Height (mm) | — |
| — | Weight (kg) | — |
| LiDAR + 3D Structured Light | Navigation | LiDAR + 3D Structured Light |
| ✅ | Self-Empty | ✅ |
| ✅ | Self-Wash Mop | ✅ |
| ✅ | Self-Dry Mop | ✅ |
| ✅ | AI Obstacle | ✅ |
The Verdict
The Dreame X40 Ultra is the better choice with an overall score of 8.4/10 — best for mid-to-large hard-floor homes wanting flagship mopping at a discount. The Dreame L40s Ultra is more affordable at $800 vs $900.