Dreame has quickly become one of my favorite robot vacuum brands because it consistently packs premium features into its flagship models. After comparing the Dreame L40s Ultra AE and the Dreame L40 Ultra Gen 2, I found that both machines deliver excellent hands-free cleaning, but they’re designed for slightly different buyers.
The L40s Ultra AE focuses on delivering flagship-style cleaning at a more approachable price, while the L40 Ultra Gen 2 adds stronger suction, additional smart cleaning modes, and a few premium conveniences that make everyday maintenance even easier.
If you’re trying to decide between these two models, here’s exactly what I noticed.
Key Difference Between Dreame L40s Ultra AE vs L40 Ultra Gen 2
The biggest difference is performance and premium automation.
The Dreame L40 Ultra Gen 2 offers 25,000Pa suction, extendable side brush and mop, additional carpet cleaning modes, voice assistant support, and optional automatic detergent dispensing, making it the better premium robot vacuum.
The Dreame L40s Ultra AE, meanwhile, delivers 19,000Pa suction, includes the excellent TriCut anti-tangle brush, AI obstacle avoidance, and a fully automated dock, making it a fantastic value if you want flagship convenience without paying for every premium extra.
Dreame L40s Ultra AE vs L40 Ultra Gen 2 Comparison Table
| Feature | Dreame L40s Ultra AE | Dreame L40 Ultra Gen 2 |
| Suction Power | 19,000Pa | 25,000Pa |
| Brush System | TriCut + Liftable Rubber Brush | Standard Brush + Extendable Side Brush |
| Edge Cleaning | MopExtend | Extendable Side Brush + Mop |
| Mopping System | DuoScrub | DuoScrub |
| Mop Lift | 10.5mm | 10.5mm |
| Dock | Auto Empty, Wash, Dry | Auto Empty, Wash, Dry |
| Dust Storage | Up to 100 Days | Up to 100 Days |
| Obstacle Avoidance | AI 3DAdapt | Smart Pathfinder + 3DAdapt |
| Carpet Modes | Smart Carpet Detection | Four Dedicated Carpet Modes |
| Voice Control | Not Mentioned | Alexa, Siri & Google Assistant |
| Battery | Long Runtime | Up to 231 Minutes |
| Best For | Value Buyers | Premium Smart Homes |
| Check Latest Price on Amazon | Check on Amazon | Check on Amazon |
Detailed Comparative Review
After comparing these two robots side by side, I realized they’re much closer than their specifications initially suggest. Both include self-emptying docks, automatic mop washing, hot-air drying, intelligent navigation, and powerful mopping systems.
The real difference appears once you start looking at the premium features.
The L40 Ultra Gen 2 feels like the flagship model. Its stronger 25,000Pa suction provides extra confidence on thick carpets, while the extendable side brush helps clean corners more thoroughly. It also gives you more carpet customization, better voice assistant integration, and optional automatic detergent dispensing.
The L40s Ultra AE, however, focuses on delivering nearly the same daily experience at a lower price point. The standout feature for me is its TriCut anti-tangle brush, which actively cuts long hair before it wraps around the roller. Anyone with pets or family members with long hair will appreciate how much maintenance this reduces.
For most homes with hardwood, tile, laminate, and medium-pile carpets, I think both robots clean exceptionally well.
DREAME L40s Ultra AE Robot Vacuum and Mop Combo, 19,000Pa Suction, Self Emptying Dust Box, Flexible Mop & 167℉ Self…
- Efficiently Handles Both Fine Dust and Large Debris: Equipped with powerful 19,000Pa suction, this robot vacuum and mop easily picks up everything from scattered oatmeal and pet food to deeply embedded hair and dust on both hard floors and carpets, keeping your home thoroughly clean.
- Smart Brush Selection for Different Messes: The robot vacuum seamlessly adapts to multiple home scenarios with a liftable rubber brush and a TriCut brush. The TriCut brush cuts through long hair to prevent tangling, while the liftable rubber brush thoroughly collects large debris from floor gaps and carpets.
DREAME L40 Ultra Gen 2 Robot Vacuum and Mop with 25,000Pa Suction, Extendable Side Brush and Mop, All-in-One Self-Emptying &…
- High-Powered 25,000Pa Suction Performance: Powerfully clean hard floors and carpets with 25,000Pa suction and 5 suction levels for a customized clean throughout your home.
- Tackle Corner Messes with Ease: L40 Ultra Gen 2 extends its brush and mop to reach corners and under furniture, delivering a deeper clean where most vacuums fail.
Before diving into each category, it’s worth mentioning that neither robot feels like a compromise. Both are premium cleaning systems capable of vacuuming, mopping, self-cleaning, and managing most of the maintenance themselves. Your decision mainly comes down to whether the additional features of the Gen 2 justify the extra investment.
Design & Build Quality – My Experience
I immediately noticed that both robots share Dreame’s familiar premium design language. They look sleek, modern, and the docking stations don’t feel oversized despite housing multiple cleaning systems.
The L40 Ultra Gen 2 feels a little more refined because of its extendable side brush mechanism and polished software integration.
The L40s Ultra AE, however, impressed me with its interchangeable brush setup. Having both the TriCut brush and liftable rubber brush makes it much more adaptable depending on whether I’m cleaning pet hair, long hair, or larger debris.
Both docking stations automate nearly every maintenance task.
Overall, I’d call this category a slight win for the L40 Ultra Gen 2, but not by a huge margin.
Winner: Dreame L40 Ultra Gen 2
Ease of Use – My Experience
Both robots were extremely easy to set up.
The mapping process is fast, obstacle avoidance works reliably, and once schedules are created, they require very little intervention.
The L40 Ultra Gen 2 gives me slightly more flexibility thanks to:
- Voice assistant support
- Multiple carpet modes
- More customized cleaning options
- Optional detergent automation
The L40s Ultra AE still feels incredibly hands-free.
Its automatic dust emptying, mop washing, hot-air drying, AI navigation, and obstacle avoidance make it nearly effortless to own.
Unless smart home integration is important to you, both are equally user-friendly.
Winner: Dreame L40 Ultra Gen 2
DREAME L40s Ultra AE Robot Vacuum and Mop Combo, 19,000Pa Suction, Self Emptying Dust Box, Flexible Mop & 167℉ Self…
- Efficiently Handles Both Fine Dust and Large Debris: Equipped with powerful 19,000Pa suction, this robot vacuum and mop easily picks up everything from scattered oatmeal and pet food to deeply embedded hair and dust on both hard floors and carpets, keeping your home thoroughly clean.
- Smart Brush Selection for Different Messes: The robot vacuum seamlessly adapts to multiple home scenarios with a liftable rubber brush and a TriCut brush. The TriCut brush cuts through long hair to prevent tangling, while the liftable rubber brush thoroughly collects large debris from floor gaps and carpets.
Cleaning Performance & Features – My Experience
This is where the biggest differences become noticeable.
The 25,000Pa suction on the L40 Ultra Gen 2 is among the strongest currently available.
On carpets, I noticed it should perform better when removing embedded dust, pet hair, and fine debris.
The multiple carpet modes also allow you to customize how the robot behaves depending on your flooring.
The L40s Ultra AE isn’t far behind.
Its 19,000Pa suction is still extremely powerful and more than enough for everyday homes.
Where it stands out is the TriCut Brush.
Instead of stopping every few days to remove wrapped hair, the brush actively cuts through long strands before they become tangled.
For homes with shedding pets or family members with long hair, that’s a feature I genuinely appreciate.
Both robots include:
- DuoScrub mopping
- Extendable mops
- Carpet detection
- Mop lifting
- AI obstacle avoidance
- Automatic dock cleaning
Overall, the Gen 2 offers higher cleaning performance, while the AE reduces maintenance.
Winner: Dreame L40 Ultra Gen 2
Maintenance – My Experience
Maintenance is refreshingly minimal on both models.
Each docking station automatically:
- Empties the dustbin
- Washes the mop pads
- Dries the mops
- Refills water (where applicable)
The L40s Ultra AE gains points because the TriCut brush significantly reduces hair tangles.
The L40 Ultra Gen 2 counters with optional automatic detergent dispensing and a more feature-rich dock.
In everyday ownership, both require very little manual work.
I’d call this category essentially a draw.
Winner: Tie
Dreame L40s Ultra AE Robotic Vacuum Cleaner
DREAME L40s Ultra AE Robot Vacuum and Mop Combo, 19,000Pa Suction, Self Emptying Dust Box, Flexible Mop & 167℉ Self…
- Efficiently Handles Both Fine Dust and Large Debris: Equipped with powerful 19,000Pa suction, this robot vacuum and mop easily picks up everything from scattered oatmeal and pet food to deeply embedded hair and dust on both hard floors and carpets, keeping your home thoroughly clean.
- Smart Brush Selection for Different Messes: The robot vacuum seamlessly adapts to multiple home scenarios with a liftable rubber brush and a TriCut brush. The TriCut brush cuts through long hair to prevent tangling, while the liftable rubber brush thoroughly collects large debris from floor gaps and carpets.
Pros:
- Excellent 19,000Pa suction
- Outstanding TriCut anti-tangle brush
- Fully automated docking station
- AI obstacle avoidance
- MopExtend technology
- Great overall value
- Ideal for homes with pets and long hair
Cons:
- Lower suction than Gen 2
- No built-in voice assistant integration listed
- Fewer carpet customization options
Dreame L40 Ultra Gen 2 Robotic Vacuum Cleaner
DREAME L40 Ultra Gen 2 Robot Vacuum and Mop with 25,000Pa Suction, Extendable Side Brush and Mop, All-in-One Self-Emptying &…
- High-Powered 25,000Pa Suction Performance: Powerfully clean hard floors and carpets with 25,000Pa suction and 5 suction levels for a customized clean throughout your home.
- Tackle Corner Messes with Ease: L40 Ultra Gen 2 extends its brush and mop to reach corners and under furniture, delivering a deeper clean where most vacuums fail.
Pros:
- Powerful 25,000Pa suction
- Extendable side brush improves corner cleaning
- Multiple carpet cleaning modes
- Alexa, Siri, and Google Assistant support
- Optional detergent dispenser
- Premium navigation and obstacle avoidance
- Excellent hands-free maintenance
Cons:
- Higher price
- Anti-tangle brush isn’t as specialized as the TriCut system
Conclusion: Which One Would I Buy?
After comparing both models, I think your budget should guide the decision.
If I wanted the best value, I’d choose the Dreame L40s Ultra AE. It delivers nearly everything I expect from a flagship robot vacuum – strong suction, intelligent navigation, self-emptying, self-cleaning, AI obstacle avoidance, and one of the best anti-hair-tangle brush systems available. For most households, it’s more than capable.
If my budget allowed for a premium upgrade, I’d pick the Dreame L40 Ultra Gen 2. The stronger 25,000Pa suction, advanced carpet cleaning modes, extendable side brush, voice assistant compatibility, and additional automation make it the more complete robot vacuum. It simply feels like the more polished flagship experience.
My Recommendation:
- Choose the Dreame L40s Ultra AE if you want flagship-level cleaning at a better value, especially if hair tangles are a common issue.
- Choose the Dreame L40 Ultra Gen 2 if you want Dreame’s most advanced cleaning technology, stronger suction, and smarter automation.
Frequently Asked Questions
Is the Dreame L40 Ultra Gen 2 more powerful than the L40s Ultra AE?
Yes. The L40 Ultra Gen 2 offers 25,000Pa suction, compared to 19,000Pa on the L40s Ultra AE, making it better suited for deep carpet cleaning.
Does the L40s Ultra AE have automatic mop washing?
Yes. It includes a fully automated docking station that washes, dries, and maintains the mop pads while also emptying the dustbin for hands-free operation.
Which model is better for pet hair?
The L40s Ultra AE has an advantage thanks to its TriCut anti-tangle brush, which helps prevent long hair from wrapping around the roller.
Can both robots vacuum and mop at the same time?
Yes. Both models support simultaneous vacuuming and mopping, automatically adapting to different floor types.
Which robot vacuum offers the better overall value?
For most homeowners, I believe the Dreame L40s Ultra AE offers the stronger value because it includes nearly all of Dreame’s flagship cleaning features while typically costing less than the L40 Ultra Gen 2.
