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Dreame L40 Ultra vs Roborock Qrevo Curv S5X
The Dreame L40 Ultra wins with a score of 8.4/10. Best for: Pet households with mostly hard floors and large open spaces.
Winner
Dreame L40 Ultra
8.4/10$599
The Dreame L40 Ultra delivers near-flagship cleaning performance and the longest battery efficiency we've measured at a mid-range price.
Read full review
Roborock Qrevo Curv S5X
8.2/10$650
The best-value fully-autonomous hard-floor specialist in Roborock's Curv family — strong cleaning, weak obstacle avoidance.
Read full reviewScore Comparison
Dreame L40 UltraRoborock Qrevo Curv S5X
Overall
8.48.2
Hard Floor
9.09.0
Carpet
8.08.8
Mopping
8.57.5
Navigation
8.88.5
Noise
7.58.0
Smart Features
8.57.5
Maintenance
8.87.8
Specifications
| Dreame L40 Ultra | Spec | Roborock Qrevo Curv S5X |
|---|---|---|
| $599 | Price | $650 |
| 11000 | Suction (Pa) | 18500 |
| 5200 | Battery (mAh) | 5200 |
| 65.0 | Noise (dB) | 55.0 |
| — | Dustbin (ml) | 325 |
| — | Water Tank (ml) | — |
| 10.5 | Mop Lift (mm) | 7.0 |
| — | Height (mm) | 98.0 |
| — | Weight (kg) | — |
| LiDAR + 3D Structured Light | Navigation | PreciSense LiDAR |
| ✅ | Self-Empty | ✅ |
| ✅ | Self-Wash Mop | ✅ |
| ✅ | Self-Dry Mop | ✅ |
| ✅ | AI Obstacle | ❌ |
Pros & Cons
Dreame L40 Ultra
Pros
- + 11,000Pa suction handles hard floors with ease
- + Class-leading battery efficiency (194 min runtime)
- + TriCut anti-tangle brush handles long hair well
- + 60°C hot water mop wash and auto-dry
- + Built-in voice control + Matter, Alexa, Google, HomeKit
Cons
- − Lower carpet performance vs flagship X40
- − Mop pad retention occasionally drops a pad
- − Louder than premium competitors at full power
- − Mopping won't replace deep manual cleaning on heavy stains
Roborock Qrevo Curv S5X
Pros
- + 18,500 Pa suction pulls flour, pasta, and pet hair in a single pass
- + Zero hair tangle on the DuoDivide brush in the 7-inch test
- + 75°C hot-water mop washing and 45°C warm-air drying on the dock
- + Camera-free design — privacy-friendly for bedrooms and offices
- + Thinnest Curv (9.79 cm) — fits under most low sofas and bed frames
Cons
- − Reactive Tech obstacle avoidance detected only 7 of 24 objects
- − 325 ml dustbin clogs quickly with long hair
- − Mop drags on medium-pile carpet with only 7 mm lift
- − No onboard camera means no remote viewing or Intelligent Voice Assistant
- − Battery is 5,200 mAh vs 6,400 mAh on the Curv — shorter runtime for XL homes
The Verdict
The Dreame L40 Ultra is the better choice with an overall score of 8.4/10 — best for pet households with mostly hard floors and large open spaces. The Dreame L40 Ultra is more affordable at $599 vs $650.