Roborock S8 MaxV Ultra vs Dreame X40 Ultra
Quick take: The Dreame X40 Ultra costs $100 less; the Dreame X40 Ultra has stronger suction (12,000 vs 10,000 Pa); the Dreame X40 Ultra runs longer per charge (210 vs 180 min).
| Spec | Roborock S8 MaxV Ultra | Dreame X40 Ultra |
|---|---|---|
| Price | $1,800 | $1,700 |
| Rating | 4.7★ (3,200) | 4.7★ (1,500) |
| Type | Robot Vacuum & Mop | Robot Vacuum & Mop |
| Suction | 10000 Pa | 12000 Pa |
| Battery | 180 min | 210 min |
| Navigation | LiDAR + Camera | LiDAR + Camera |
| Noise | 67 dB | 66 dB |
| Dustbin | 400 ml | 350 ml |
| Water tank | 300 ml | 300 ml |
| Self-empty dock | Yes | Yes |
| Auto mop washing | Yes | Yes |
| Hot water washing | Yes | Yes |
| Obstacle avoidance | Yes | Yes |
| Carpet detection | Yes | Yes |
| Auto mop lifting | Yes | Yes |
| Multi-floor mapping | Yes | Yes |
| App control | Yes | Yes |
| Dimensions | 13.8 x 13.8 x 3.8 in | 13.9 x 13.9 x 4.0 in |
| Weight | 9.3 lbs | 10.1 lbs |
| Warranty | 1 year | 1 year |
Pros & cons
Roborock S8 MaxV Ultra
- ✓Industry-leading 10000Pa suction picks up pet hair, cereal, and fine dust with ease
- ✓Hot water mop washing keeps pads genuinely clean and odor-free
- ✓AI obstacle avoidance reliably dodges cables, shoes, and pet toys
- ✓Dual rubber brush rolls resist hair tangles better than bristle brushes
- ✓Excellent carpet detection lifts the mop pad high enough to avoid wetting carpet
- ✗Premium price point at $1800 puts it out of reach for many budgets
- ✗Dock is very large and requires significant floor space
- ✗Mop pressure is lighter than dedicated mopping robots
- ✗App has a steep learning curve with many nested menus
Dreame X40 Ultra
- ✓12000Pa suction is the strongest available — pulls embedded dirt from carpet fibers
- ✓Extending side brush reaches into corners and along walls other robots miss
- ✓Hot water mop wash with auto-detergent dispensing is truly hands-free
- ✓MopExtend technology pushes mop pads beyond the robot body for edge mopping
- ✓210-minute battery comfortably covers 3000+ sq ft homes
- ✗App can be buggy with occasional disconnects and slow map loading
- ✗Extending brush mechanism is a moving part that could wear over time
- ✗Slightly taller profile (4 inches) may not fit under some furniture
- ✗Newer brand with less established US customer service compared to Roborock or iRobot