Our Verdict
Dreame L40s Ultra CE Wins

It has superior 13,000Pa suction and 100-day self-emptying capacity. Choose Roborock Qrevo Slim for its ultra-slim 8.2cm design, ideal for cleaning under low furniture.
Bottom Line: Dreame L40s Ultra CE is the better choice. It has superior 13,000Pa suction and 100-day self-emptying capacity.
Key Differences
The most significant spec differences at a glance
Suction Power
18% moreBattery Life
11% lessWeight
40% lessAdvantages
Where each product wins
DREAME
- Suction Power: 18% higher (13000.0 vs 11000.0)
- Weight: 40% lower (17.0 vs 28.2)
roborock
- Battery Life: 11% higher (160.0 vs 180.0)
Who Should Buy Which?
Find the right product for your needs
Buy DREAME if...
DREAME L40s Ultra CE
If you need exceptional cleaning power for pet hair and varied floor types without breaking the bank, the DREAME L40s Ultra CE is your best choice. Ideal for pet owners, it boasts 13,000Pa suction and a TriCut Brush to prevent tangles. Prioritizing deep dirt removal, automatic mop lifting on carpets, and minimal maintenance with its 100-day self-emptying base, this vacuum delivers premium performance at a highly competitive price point, making it excellent value.
Buy roborock if...
roborock Qrevo Slim Robot
The roborock Qrevo Slim is perfect for individuals living in homes with modern, low-profile furniture or intricate layouts. If you prioritize an ultra-slim design (3.23 inches) to clean under sofas and beds, and demand precise corner cleaning with its FlexiArm side brush, this premium option is for you. Its advanced 3D Sensing Tech and obstacle recognition navigate complex environments adeptly, making it ideal for those willing to invest more for unparalleled access and comprehensive coverage in challenging spaces.
Spec Comparison
11 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $399 | $750 |
| Rating | 4.3(613) | 4.1(1.3k) |
| Suction Power Pa | 13000 | 11000 |
| Navigation Type | LiDAR | LiDAR |
| Self Emptying Base | Yes | Yes |
| Weight | 17 lbs | 28.2 lbs |
| App Control | Yes | Yes |
| Carpet Detection | Yes | Yes |
| Mopping Function | Yes | Yes |
| Battery Life Mins | 160 | 180 |
| Obstacle Avoidance | Yes | Yes |
| Height Inches | — | 3.23" |
| Noise Level | — | 0 dB |
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Pros & Cons
Quick overview of strengths and weaknesses
DREAME L40s Ultra
- 13,000Pa suction removes deep dirt from hard floors and carp
- Base refills water, washes mops, hot air dries pads.
- TriCut Brush cuts hair, prevents brush tangles.
- Mop lifts 10.5mm on carpet, prevents wetting rugs.
- Auto-filling cleaning solution requires separate module.
- Requires 2.4GHz Wi-Fi network, no 5GHz support.
roborock Qrevo Slim
- Cleans under low furniture; 8.2cm height.
- 11,000Pa suction removes dirt effectively.
- Dock provides auto mop wash, dry, tank refill.
- Self-empties dustbin for up to 7 weeks.
- Re-mopping feature requires manual app activation.
- Water flow settings require manual adjustment.
Frequently Asked Questions
Common questions about this comparison
Which robot vacuum is better for homes with pets?
The Dreame L40s Ultra CE is superior for pet hair with its 13,000Pa suction and TriCut Brush, which actively cuts hair to prevent tangles. Its mop also lifts 10.5mm, preventing carpet wetting.
How do the suction powers compare between the two models?
The Dreame L40s Ultra CE offers higher suction at 13,000Pa, effectively removing deep dirt from various surfaces. The Roborock Qrevo Slim provides strong 11,000Pa suction, also capable of effective cleaning.
Which robot can clean under lower furniture?
The Roborock Qrevo Slim, with its ultra-slim 8.2cm height, is specifically designed to access and clean under low furniture and tight spaces that other robots might miss.
What is the main difference in their self-emptying base capacities?
The Dreame L40s Ultra CE's self-emptying base holds dust for up to 100 days. The Roborock Qrevo Slim's base self-empties for up to 7 weeks (approx. 49 days). Dreame offers longer hands-free operation.
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