Introduction
When looking at premium robot vacuum cleaners for 2025, three models stand out in the high-end segment: the Dreame L40s Pro Ultra, launched in 2025, alongside two Roborock offerings—the Qrevo Curv from 2024 and its newer sibling, the Qrevo CurvX from 2025. All three feature multifunctional bases with mop washing and drying capabilities, making them suitable for users who want comprehensive automated floor maintenance without constant manual intervention.
These aren't entry-level devices. Each model targets homeowners with medium to large properties who expect powerful suction, intelligent navigation, and effective mopping. The Dreame option typically positions itself as a feature-rich alternative at a competitive price point, whilst Roborock maintains its reputation as the global leader in robotic vacuum technology. What separates these three models comes down to specific design choices, suction power variations, and how each manufacturer approaches navigation and cleaning efficiency.
Differences Key in a Glance
- Suction power ranges from 18,500 Pa to 22,000 Pa, with the Roborock Qrevo CurvX leading
- Battery capacity differs significantly: 5,200 mAh in the Dreame versus 6,400 mAh in both Roborock models
- The Dreame L40s Pro Ultra features a retractable LiDAR turret; the Qrevo CurvX also has retractable LiDAR, whilst the Qrevo Curv uses a fixed turret
- Only the Dreame can automatically dismount its mops at the base for vacuum-only sessions
- The Dreame includes a detergent dispenser; neither Roborock model does
- Mop extension technology varies: the Dreame adds a swinging motion (Roboswing)
- The Dreame recognises 180 obstacles; the Qrevo Curv identifies 62, and the CurvX recognises 108
- Robot height: the Qrevo CurvX measures just 79.8 mm, considerably lower than the other two at around 103 mm
- Base dimensions and tank capacities differ across all three models
Power and Suction
The Roborock Qrevo CurvX delivers 22,000 Pa of suction, making it the most powerful of the trio. The Dreame L40s Pro Ultra offers 19,000 Pa, whilst the Qrevo Curv sits in between at 18,500 Pa. In practical terms, all three handle everyday debris, pet hair, and embedded dirt in carpets without issue, but the CurvX has a clear advantage for homes with thick rugs or persistent dirt accumulation.
Brush design takes different approaches. The Dreame uses a dual-brush system called HyperStream, which anchors two brushes at one end to minimise hair tangles. Both Roborock models feature the DuoDivide anti-tangle brush, which pushes hair towards a central suction gap. All three include side brushes that extend to reach corners and edges, and all can elevate their side brushes during mopping to avoid cross-contamination. However, only the Dreame can lift its main brush whilst mopping—a detail that matters if you want to avoid dragging a rotating brush across wet floors.
Each model also elevates its side brush when mopping, and all three use anti-tangle technology on the side brush. This helps when navigating around chair legs or other obstacles where hair typically wraps around bristles.
Mopping
All three robots use dual rotating mop pads that extend to reach edges and skirting boards. The Dreame L40s Pro Ultra adds Roboswing, a motion that shifts the robot's rear section slightly to push the mop under furniture edges and protruding baseboards. Both Roborock models extend their mops but don't include this swinging motion.
Mop lift height varies. The Dreame raises its mops by 10.5 mm, the Qrevo Curv lifts between 10 and 20 mm, and the CurvX offers 7 to 17 mm of lift. Higher lift capability helps when transitioning from hard floors to thick carpets, preventing wet mops from dragging across rugs. All three detect dirt on the floor and on the mops themselves, triggering additional passes or mop washing cycles when needed.
A standout feature on the Dreame: it can automatically remove its mops at the base when you only want to vacuum. Neither Roborock model offers this, so if you frequently switch between vacuum-only and vacuum-mop modes, you'll need to manually detach the mops on the Qrevo Curv or CurvX.
None of the three heats water for mopping the floor—they all use cold water during the cleaning process. However, their bases wash the mops with hot water and dry them with heated air, which helps prevent odours and bacteria growth.
Navigation System
The Dreame L40s Pro Ultra and Roborock Qrevo CurvX both use retractable LiDAR systems, allowing them to lower their navigation turrets when needed. The Qrevo Curv has a fixed LiDAR turret. Retractable LiDAR becomes useful under low furniture, though the overall height of the robot matters more in practice.
All three feature dual AI cameras and 3D laser sensors for obstacle detection, plus LED lighting for navigation in dark rooms. Remote camera access is available on each model, allowing you to check in on your home via the app. Where they differ significantly is in the number of recognised obstacles: the Dreame identifies 180 different objects, the Qrevo CurvX recognises 108, and the Qrevo Curv detects 62. More recognised objects generally means better avoidance of shoes, cables, pet toys, and other household items.
Pet owners might appreciate that all three detect pets and can adapt their cleaning behaviour accordingly. Only the Dreame, however, specifically detects curtains, which helps avoid tangling with floor-length drapes.
The Roborock models run on the RR Mason 11.0 algorithm with SmartPlan AI for route optimisation. The Dreame uses CleanGenius AI, though the specific CPU details aren't available. The Dreame also includes AI-powered stain recognition, a feature absent on both Roborock models, which can trigger focused cleaning on visible marks.
Battery and Autonomy
Battery capacity tells an interesting story. Both Roborock models pack 6,400 mAh batteries, whilst the Dreame uses a smaller 5,200 mAh unit. Despite this, the Dreame manages 220 minutes of runtime, the Qrevo Curv achieves 240 minutes, and the CurvX also runs for 220 minutes. The Qrevo Curv's larger battery and longer runtime make it better suited for expansive homes where the robot needs to cover significant ground before returning to recharge.
In real-world use, all three handle typical homes without needing mid-clean recharges, but the Qrevo Curv's extra 20 minutes of autonomy provides a buffer for complex layouts or multi-storey cleaning sessions.
Intelligent Functions
All three robots can climb obstacles up to a certain height, though the exact threshold varies. Each model includes its own voice assistant as well as compatibility with external assistants like Alexa and Google Home. None feature a robotic arm for tasks beyond vacuuming and mopping.
The intelligent cleaning systems differ slightly. The Dreame's CleanGenius AI includes stain recognition, which neither Roborock model offers. Both Roborock devices use SmartPlan AI to optimise cleaning routes and adapt to room layouts. In practice, this means the Dreame may spot and target specific marks on the floor, whilst the Roborock models rely on dirt detection sensors and systematic coverage patterns.
Multifunctional Cleaning Base
Each base automatically empties the robot's dustbin, washes the mops with hot water, and dries them using heated air. The Dreame's base features third-generation self-cleaning for the washing tray, the Qrevo Curv uses version 2.0, and the CurvX has version 3.0. Higher generations typically mean more thorough automated maintenance of the base's internal components.
The Dreame includes a detergent dispenser, which neither Roborock model provides. This allows the Dreame to add cleaning solution during mop washing automatically. Both Roborock bases require manual addition of detergent if you want to use it.
Tank capacities differ across the board. The Dreame's dust bag holds 3.2 litres, compared to 2.5 litres in both Roborock models. For clean water, the Dreame offers 4.5 litres, whilst the Roborock bases hold 4 litres. Dirty water capacity is 4 litres on the Dreame and 3 litres on the Roborock models. Larger tanks mean less frequent emptying and refilling, which matters if you have a large home or prefer minimal maintenance.
The Dreame offers an optional plumbing connection kit, sold separately, that allows the base to connect directly to water supply and drainage. Neither Roborock model supports this, even as an optional accessory. Whilst this isn't a built-in feature, it's worth noting for users who want the ultimate hands-off experience.
Dimensions
The Roborock Qrevo CurvX stands out with a height of just 79.8 mm, making it the lowest profile of the three. The Dreame measures 103.8 mm tall, and the Qrevo Curv is 103 mm. That extra 23 mm of clearance on the CurvX can be the difference between fitting under sofas, beds, and cabinets or getting stuck. If your furniture sits low to the ground, this becomes a deciding factor.
Diameter varies only slightly: 350 mm for the Dreame, 352 mm for the Qrevo Curv, and 353 mm for the CurvX. These differences are negligible in practice.
Base dimensions tell a different story. The Dreame's base measures 340 mm wide, 590.5 mm tall, and 456.7 mm deep. Both Roborock bases are more compact at 450 mm in all three dimensions, forming a cube-like shape. The Dreame's taller, narrower base may fit better in certain spaces, whilst the Roborock's square footprint is more predictable for placement.
Real-World Use Experience
For large homes, the Roborock Qrevo Curv's 240-minute battery life and 6,400 mAh capacity provide the most reassurance. The Dreame's larger tanks—particularly the 4.5-litre clean water reservoir—reduce refill frequency, which balances out its smaller battery.
Pet owners benefit from the anti-tangle brushes on all three models, but the Dreame's ability to recognise 180 obstacles gives it an edge in homes with scattered toys, bowls, and other pet paraphernalia. The automatic mop removal on the Dreame also simplifies switching to vacuum-only mode when you just want to tackle pet hair without mopping.
The Qrevo CurvX's low profile makes it ideal for homes with low-clearance furniture. If you've struggled with previous robots getting stuck under beds or sofas, the 79.8 mm height opens up areas other models can't reach.
For users who want minimal base maintenance, the Dreame's detergent dispenser and third-generation tray cleaning reduce manual intervention. The optional plumbing kit, whilst an additional purchase, appeals to those seeking a fully automated system.
Homes with intricate layouts or many obstacles benefit from the Dreame's higher obstacle recognition count and stain detection. Simpler floor plans work well with any of the three, but cluttered spaces favour the Dreame's more extensive object database.
Conclusion: Which to Choose?
Choose the Dreame L40s Pro Ultra if you want the most automated experience with detergent dispensing, automatic mop removal, and extensive obstacle recognition. It suits homes with pets, cluttered floors, and users who prefer minimal manual intervention. The larger water tanks reduce refill frequency, and the optional plumbing kit offers a path to near-total automation. It's also a strong choice if you value stain recognition and Roboswing for edge cleaning.
Choose the Roborock Qrevo Curv if you need maximum battery life for large properties and prefer a compact base footprint. The 240-minute runtime and 6,400 mAh battery make it the most capable for extensive cleaning sessions without recharging. It offers solid performance across all areas without standout features, making it a reliable all-rounder for spacious homes.
Choose the Roborock Qrevo CurvX if low-profile access is essential. At 79.8 mm tall with retractable LiDAR, it fits under furniture other robots can't reach. The 22,000 Pa suction is the highest of the three, making it best for thick carpets and stubborn dirt. The third-generation base cleaning and 108 recognised obstacles strike a balance between automation and obstacle avoidance. It's ideal for homes with low furniture, heavy carpeting, or users who want the latest Roborock technology with improved base maintenance.
