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Introduction
Choosing the right robot vacuum can make all the difference in the daily maintenance of any home. The Dreame L40s Pro Ultra, the Roborock Qrevo Curv S5X and the Roborock QV 35A represent three different propositions within the market for robots with multifunctional bases, each with technical characteristics that position them in distinct segments.
The Dreame L40s Pro Ultra is a 2025 model that opts for maximum technology, with dual camera and an advanced navigation system. The Roborock Qrevo Curv S5X, launched in 2024, positions itself as a high-end option with the DuoDivide system that characterises the brand. The Roborock QV 35A, also from 2025, represents a more accessible alternative within the Roborock family, maintaining essential functions whilst dispensing with some extras.
This selection is particularly interesting for those seeking a robot with a base that washes and dries the mops automatically, but need to understand which features justify the differences between models.
Power and Suction
Suction power establishes a clear hierarchy amongst these three models. The Dreame L40s Pro Ultra leads with 19,000 Pa, followed very closely by the Roborock Qrevo Curv S5X with 18,500 Pa. The real difference appears with the Roborock QV 35A, which remains at 8,000 Pa. In practice, this means that the first two can tackle dense carpets and ingrained dirt more effectively, whilst the QV 35A is more oriented towards daily maintenance on hard floors.
The brushing system presents important differences. The Dreame mounts a dual HyperStream brush designed to prevent hair tangles, whilst the Qrevo Curv S5X uses the anti-tangle DuoDivide system characteristic of Roborock, which pushes hairs towards the centre to facilitate suction. The QV 35A incorporates a simple brush, less sophisticated but functional for basic needs.
An exclusive advantage of the Dreame L40s Pro Ultra is the ability to lift both the main brush and the side brush during mopping. This prevents the brushes from getting unnecessarily wet and allows cleaner mopping without dragging dirt from the brush. The two Roborock models keep the brushes in a fixed position during mopping.
Both the Dreame and the Qrevo Curv S5X incorporate an extendable side brush to better reach corners. The QV 35A dispenses with this function. All three models feature anti-tangle technology on the side brush, useful in homes with pets or long hair.
Mopping
All three robots use a two rotating mop system, but the differences in features are notable. The Dreame L40s Pro Ultra extends the mops towards the edges and incorporates Roboswing movement, a system that makes the robot perform small lateral movements to get the mop under furniture and overhangs. The Roborock Qrevo Curv S5X extends the mops but without this additional movement. The QV 35A does not have mop extension, limiting itself to standard mopping.
Mop lifting also shows differences: the Dreame reaches 10.5 mm, whilst the two Roborock models reach 10 mm. It may seem like a small difference, but that extra half millimetre can make a difference on short-pile carpets.
An exclusive function of the Dreame L40s Pro Ultra is the automatic removal of mops at the base. When a vacuum-only session is programmed, the robot leaves the mops at the base and goes out without them. This avoids dragging dry mops across floors that don't need mopping, something the Roborock models cannot do.
Regarding dirt detection, both the Dreame and the Qrevo Curv S5X detect dirt on the mops and on the floor, adjusting the re-mopping when necessary. The QV 35A lacks this function, always performing the same mopping pattern without adapting to the actual dirt level.
Navigation System
This is where the Dreame L40s Pro Ultra marks wider distances. It incorporates dual camera with artificial intelligence, front 3D laser sensor and LED for night vision. This combination allows recognition of up to 180 different types of obstacles, including pets and curtains. Additionally, it offers remote access to the camera, allowing you to monitor the home from the app.
The Roborock Qrevo Curv S5X uses a LiDAR turret with obstacle avoidance system, but without AI camera. It works with the RR Mason 11.0 algorithm, which offers precise navigation although without the level of visual recognition of the Dreame. The QV 35A also maintains LiDAR navigation with basic obstacle avoidance.
Pet and curtain detection is only present in the Dreame. This can be relevant if you live with animals and want the robot to adapt its behaviour according to their presence, or if you have long curtains that you prefer the robot to avoid.
All three models integrate intelligent cleaning with AI, although with different levels of sophistication: the Dreame uses CleanGenius, whilst the Roborock models employ SmartPlan. Stain recognition using AI is only available on the L40s Pro Ultra.
Autonomy and Battery
All three robots mount 5,200 mAh batteries, but autonomy varies. The Dreame L40s Pro Ultra achieves 220 minutes of continuous operation, whilst the Roborock Qrevo Curv S5X and the QV 35A reach 180 minutes. This 40-minute difference can be decisive in large homes or with complex layouts that require prolonged cleaning sessions.
For spaces of up to 150-180 m², any of the three models completes cleaning without problems. In areas exceeding 200 m², the Dreame offers greater margin before having to return to the base to recharge.
Smart Functions
The ability to overcome obstacles is superior in the Roborock Qrevo Curv S5X and the QV 35A, both with 20 mm maximum height. The Dreame L40s Pro Ultra can overcome simple steps without specifying the exact height, although in practice it usually approaches similar values.
An exclusive feature of the Dreame L40s Pro Ultra is the own voice assistant integrated into the robot. All three models are compatible with Alexa and Google Home, but only the Dreame allows direct interaction with the robot without the need for external speakers.
Multifunctional Cleaning Base
All three bases perform auto-emptying of the dust bin, washing of mops with hot water and drying with hot air. However, the differences are in the details.
The Dreame L40s Pro Ultra incorporates third-generation tray self-cleaning, the most advanced system of the three. The Qrevo Curv S5X uses self-cleaning 2.0, also effective but less refined. The QV 35A does not include tray self-cleaning, which implies greater manual maintenance.
Only the Dreame has a detergent tank in the base, automatically dispensing product during mop washing. The Roborock models work solely with water. Additionally, the L40s Pro Ultra accepts an optional plumbing connection kit that is purchased separately, although it does not come integrated as standard.
In storage capacities, the Dreame offers a 3.2-litre dust bag, 4.5-litre clean water tank and 4-litre dirty water tank. The Qrevo Curv S5X has a 2.5-litre bag, 4 litres of clean water and 3 of dirty water. The QV 35A remains at 2.7 litres of bag, 4 of clean water and 3.5 of dirty water. In practice, the Dreame requires fewer emptyings and refills in large homes.
Dimensions
The lowest robot is the Roborock QV 35A with 96.5 mm height, followed by the Qrevo Curv S5X with 98 mm. The Dreame L40s Pro Ultra measures 103.8 mm, which may limit its access under some low furniture. If you have sofas or beds with less than 10 cm of clearance, it's advisable to verify the measurements.
In diameter, the differences are minimal: the Dreame has 350 mm, the Qrevo Curv S5X 352 mm and the QV 35A 353 mm. Practically identical in manoeuvrability.
The bases present different designs. The Roborock Qrevo Curv S5X has a more compact and square base (450 x 450 x 450 mm), whilst the Dreame L40s Pro Ultra (340 x 590.5 x 456.7 mm) and the QV 35A (340 x 521 x 487 mm) are narrower but taller. Depending on the available space, a vertical base or a more square one may be of more interest.
Real-World Usage Experience
For large homes of more than 180 m², the Dreame L40s Pro Ultra offers clear advantages: greater autonomy, larger tanks in the base and superior suction power. The ability to automatically remove mops is convenient if you alternate days of vacuum-only with days of complete mopping.
In homes with pets, all three models feature anti-tangle brushes, but the Dreame adds specific animal recognition and greater power for hairs embedded in carpets. The Dreame's dual HyperStream brush and the Qrevo Curv S5X's DuoDivide are especially effective at preventing tangles.
If the home has many small obstacles, toys or cables, the Dreame's dual camera and recognition of 180 objects minimises interruptions. The Qrevo Curv S5X also avoids obstacles effectively, although without identifying them visually. The QV 35A fulfils basic navigation but without the refinement of the other two.
For those seeking total autonomy with minimum maintenance, the Dreame stands out for its third-generation tray self-cleaning, detergent tank and greater storage capacities. The Qrevo Curv S5X requires somewhat more attention but remains very autonomous. The QV 35A needs manual tray cleaning more frequently.
In spaces with low furniture or beds with little height, the Roborock QV 35A and the Qrevo Curv S5X have an advantage due to their 96.5 mm and 98 mm height respectively. The Dreame, at 103.8 mm, may be limited in these cases.
Conclusion: Which to Choose?
Choose the Dreame L40s Pro Ultra if you seek the maximum technological level with dual AI camera, pet recognition, remote camera access and the greatest autonomy of the group. Ideal for large homes, households with animals, users who value complete automation and those who need an integrated detergent tank. The lifting of brushes during mopping and the automatic removal of mops make a difference in versatility. It's advisable to verify that the 103.8 mm height does not limit access under your furniture.
Choose the Roborock Qrevo Curv S5X if you prefer a balance between advanced features and compact base design. Its anti-tangle DuoDivide system is excellent with pets, the power of 18,500 Pa is sufficient for most situations and the base occupies less space. Good option for medium to large homes seeking high performance without reaching the price of the Dreame. The 98 mm height facilitates access under low furniture.
Choose the Roborock QV 35A if you're looking for a robot with multifunctional base at a more accessible price, accepting certain limitations. With 8,000 Pa it's suitable for hard floors and daily maintenance, although it falls short on thick carpets. Lacks mop extension, dirt detection and advanced tray self-cleaning, which implies more manual maintenance. Ideal for small to medium homes without pets, users prioritising value for money and those not requiring the most advanced functions. Its 96.5 mm height is the lowest of the three.
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