Roborock S8 Pro Ultra vs Dreame L40s Ultra
Quick take: The Dreame L40s Ultra has stronger suction (19,000 vs 6,000 Pa); the Dreame L40s Ultra runs longer per charge (260 vs 180 min).
| Spec | Roborock S8 Pro Ultra | Dreame L40s Ultra |
|---|---|---|
| Price | ~$470 | ~$470 |
| Type | Robot Vacuum & Mop | Robot Vacuum & Mop |
| Suction | 6000 Pa | 19000 Pa |
| Battery | 180 min | 260 min |
| Navigation | LiDAR | LiDAR + Camera |
| Filtration | — | — |
| Cordless | Yes | Yes |
| Bagged | — | — |
| Noise | 67 dB | 66 dB |
| Dustbin | 400 ml | 395 ml |
| Water tank | 300 ml | 300 ml |
| Self-empty dock | Yes | Yes |
| Auto mop washing | Yes | Yes |
| Hot water washing | No | Yes |
| Obstacle avoidance | No | Yes |
| Carpet detection | Yes | Yes |
| Auto mop lifting | Yes | Yes |
| Multi-floor mapping | Yes | Yes |
| App control | Yes | Yes |
| Dimensions | 13.9 x 13.9 x 3.8 in | 13.8 x 13.8 x 4.1 in |
| Weight | 9.1 lbs | 9.9 lbs |
| Warranty | 1 year | 1 year |
Pros & cons
Roborock S8 Pro Ultra
- ✓Dual rubber brush system excels at picking up pet hair without tangles
- ✓Self-washing dock eliminates the grossest part of robot mop ownership
- ✓Sonic mopping vibrates at 3000rpm for surprisingly effective floor cleaning
- ✓Excellent multi-floor mapping — remembers up to 4 floors reliably
- ✓Consistently strong Amazon ratings with thousands of verified reviews
- ✗No camera means it can bump into small obstacles like shoes or cables
- ✗6000Pa suction struggles with heavier debris on thick carpet
- ✗Dock does not use hot water, so mop pads can develop odor over time
- ✗VibraRise mop lift is only about 5mm, not enough for high-pile carpet
Dreame L40s Ultra
- ✓Flagship-grade 19000Pa suction and hot water mop washing at a mid-range price
- ✓81% positive owner sentiment — praised for obstacle avoidance and pet hair
- ✓DuoBrush design shrugs off long hair that kills single-roller robots
- ✓MopExtend reaches baseboards and into corners most round robots miss
- ✓260-minute battery covers large homes in a single run
- ✗Carpet performance is good but not class-leading — fine dust stays in thick pile
- ✗Dock takes up serious floor space and the water tanks need weekly attention
- ✗Dreame app notifications are chatty out of the box
- ✗Frequent sale-price swings make it easy to overpay — wait for the $600s