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Dreame X40 Ultra vs Roborock QV 35A
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.
Winner
Dreame X40 Ultra
8.4/10$900
Last-gen flagship with class-leading mopping, now half its launch price.
Read full review
Score Comparison
Dreame X40 UltraRoborock QV 35A
Overall
8.48.0
Hard Floor
9.28.8
Carpet
8.57.5
Mopping
9.48.0
Navigation
8.68.2
Noise
7.59.0
Smart Features
8.38.5
Maintenance
7.88.0
Specifications
| Dreame X40 Ultra | Spec | Roborock QV 35A |
|---|---|---|
| $900 | Price | $400 |
| 12000 | Suction (Pa) | 8000 |
| 6400 | Battery (mAh) | 5200 |
| 65.0 | Noise (dB) | 45.0 |
| — | Dustbin (ml) | 330 |
| — | Water Tank (ml) | — |
| — | Mop Lift (mm) | 10.0 |
| — | Height (mm) | — |
| — | Weight (kg) | 2.7 |
| LiDAR + 3D Structured Light | Navigation | PreciSense LiDAR |
| ✅ | Self-Empty | ✅ |
| ✅ | Self-Wash Mop | ✅ |
| ✅ | Self-Dry Mop | ✅ |
| ✅ | AI Obstacle | ✅ |
Pros & Cons
Dreame X40 Ultra
Roborock QV 35A
Pros
- + 8,000Pa HyperForce suction
- + Auto mop wash and dry dock
- + Anti-tangle spiral rubber brush
- + Very quiet — 45dB in standard mode
- + 180-min runtime covers large homes
- + Multi-floor mapping (up to 4 floors)
Cons
- − Struggles on high-pile and shag carpet
- − No hot water mop wash
- − Reactive Tech obstacle avoidance stumbles on dark floors
- − Reports of occasional dock water leaks
- − Fixed mop arms (no extending edge-mop)
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 Roborock QV 35A is more affordable at $400 vs $900.