Introduction
The Dreame L40 Ultra AE, the Roborock Qrevo Curv and the Roborock Qrevo Edge S5A represent three high-end proposals within the robot vacuum market with advanced mopping capabilities. The Dreame model arrived in 2025, whilst the two Roborock options were launched in 2024. All three units incorporate multifunction bases that wash and dry the mops with hot air, which guarantees automatic maintenance and superior mopping results.
This robot vacuum comparison is designed for those seeking units capable of managing large homes with different types of flooring. All include laser navigation technology and intelligent systems that optimise cleaning according to the characteristics of the home.
Power and Suction
The Dreame robot vacuum reaches 19,000 Pa of suction power, 500 Pa more than the Roborock Qrevo Curv and the Roborock Qrevo Edge S5A, both with 18,500 Pa. This difference can be particularly noticeable on medium-pile carpets or when vacuuming heavier debris embedded in the fibres.
Regarding the brushing system, the Dreame L40 Ultra AE mounts a TriCut 3.0 brush that combines bristles with blades to reduce hair tangles. The two Roborock models use the DuoDivide Anti-tangle system, which pushes hairs towards the centre to facilitate direct suction without them wrapping around the brush.
The main brush is liftable during mopping on the Dreame L40 Ultra AE and on the Qrevo Curv, which prevents dragging dry dirt whilst passing the mop. The Qrevo Edge S5A does not have this function. Where both Roborock units do stand out is in the side brush: both have an extendable and anti-tangle version, which improves sweeping in corners and reduces maintenance. The Dreame lacks these features in its side brush.
Mopping
All three robots mop with a system of two rotating mops that apply pressure on the floor. All include mop extension to better reach edges, although the Dreame L40 Ultra AE also incorporates the Roboswing system, which adds a lateral movement to slightly introduce the mops under furniture or overhangs.
Mop lifting varies between models. The Qrevo Curv can lift them between 10 and 20 mm, adapting to different carpet heights. The Dreame reaches 10.5 mm and the Edge S5A reaches 10 mm. In practice, these differences determine what type of carpets the robot can navigate without wetting.
The bases of all three units wash the mops with hot water and dry them with hot air, which speeds up the process and prevents bad odours. Additionally, they incorporate self-cleaning of the second-generation washing tray (2.0 in the Roborock models). All three detect dirt both on the mops and on the floor to adjust washing or scrubbing as necessary.
An important difference: only the Dreame L40 Ultra AE includes a detergent tank in the base, which is automatically dispensed during mop washing. The Roborock models do not offer this function.
Navigation System
The Dreame L40 Ultra AE and the Roborock Qrevo Curv share an advanced level of navigation with LiDAR turret, dual AI camera and front 3D laser sensor. Both allow remote camera access and feature LED for night vision, useful in homes with low light or for surveillance when no one is home.
The Dreame recognises up to 120 different types of obstacles, compared to the 62 of the Qrevo Curv. Both identify pets, which allows adjusting routes or activating specific modes. The Roborock Qrevo Edge S5A, on the other hand, does not incorporate AI camera or 3D laser sensor, nor remote access or front LED, and does not recognise pets. Its navigation is based on LiDAR and basic obstacle avoidance.
Regarding artificial intelligence, the Dreame uses the CleanGenius system whilst the two Roborock models employ SmartPlan with the RR Mason 11.0 algorithm. All optimise routes and adjust parameters according to floor type and detected dirt.
Autonomy and Battery
Here the difference is notable. The Roborock Qrevo Curv mounts a 6,400 mAh battery that provides up to 240 minutes of autonomy, sufficient for very large homes in a single run. The Dreame L40 Ultra AE and the Qrevo Edge S5A have 5,200 mAh batteries; the Edge S5A reaches 180 minutes of autonomy, whilst the Dreame does not specify this data.
For large houses with many rooms, the greater capacity of the Qrevo Curv can make the difference by avoiding intermediate recharges. In medium or small-sized homes, the 180 minutes of the Edge S5A are more than sufficient.
Intelligent Functions
The Roborock Qrevo Curv overcomes simple steps thanks to its adaptive system, which allows it to navigate more complex level changes than the standard 20 mm of the Dreame L40 Ultra AE and the Qrevo Edge S5A. This can be useful in homes with irregular transitions between rooms or small steps.
Only the Qrevo Curv integrates its own voice assistant, which allows giving it commands directly without needing to use the app or external devices. All three models are compatible with external voice assistants such as Alexa or Google Home.
Multifunction Cleaning Base
All three bases perform auto-emptying of the dust container, mop washing with hot water and drying with hot air. The dust bag capacity varies: the Dreame L40 Ultra AE offers 3.2 litres, the Qrevo Edge S5A 2.7 litres and the Qrevo Curv 2.5 litres. Greater capacity means fewer bag changes.
Regarding water tanks, the Dreame has 4.5 litres of clean water and 4 litres of dirty water. The Qrevo Curv has 4 litres of clean water and 3 of dirty, whilst the Edge S5A has 4 litres of clean and 3.5 of dirty. These differences affect the frequency with which tanks need to be refilled or emptied, especially in large houses.
The Dreame L40 Ultra AE allows purchasing an optional plumbing connection kit, which is bought separately and facilitates automatic filling and emptying. The Roborock models do not offer this option.
Dimensions
The Dreame robot vacuum measures 350 mm in diameter and 97 mm in height, which makes it the lowest of the three. The Roborock Qrevo Edge S5A has 352 mm in diameter and 98 mm in height, practically identical. The Qrevo Curv reaches 352 mm in diameter but 103 mm in height, which may hinder its passage under some low furniture.
The bases also present notable differences. The Dreame's measures 340 mm wide, 456.7 mm deep and 590.5 mm high. The Qrevo Edge S5A's has 340 mm wide, 487 mm deep and 521 mm high. The Qrevo Curv's is more compact in height (450 mm) but wider (450 mm wide and deep), adopting a more square design.
It's advisable to measure the available space before deciding, especially if the base is going to be placed in a recess or under furniture.
Real-World Usage Experience
For large homes of over 150 m², the Roborock Qrevo Curv offers clear advantages thanks to its 6,400 mAh battery and 240 minutes of autonomy. Its ability to overcome simple steps is also useful in houses with level changes. The extendable side brush improves sweeping in corners, something noticeable in large spaces with many nooks.
The Dreame L40 Ultra AE stands out in homes where minimal maintenance is sought. Its detergent tank in the base completely automates mopping without needing to add product manually. The 3.2-litre dust bag and larger water tanks reduce the frequency of intervention. Its lower height facilitates access under low furniture.
The Roborock Qrevo Edge S5A is the most balanced option for medium-sized homes without pets or special camera surveillance needs. Its 180-minute autonomy covers spaces of up to 120-130 m² well. Although it lacks AI camera and advanced recognition functions, its LiDAR navigation and SmartPlan system guarantee efficient cleaning.
In homes with pets, the Dreame and the Qrevo Curv recognise animals and adjust their routes, as well as featuring brushing systems designed to reduce hair tangles. The Qrevo Edge S5A does not identify pets, although its DuoDivide brush also minimises tangles.
Conclusion: Which to Choose?
Choose the Dreame L40 Ultra AE if you're looking for the highest suction power (19,000 Pa), want to automate maintenance to the maximum with the included detergent tank and value having larger water tanks. It's ideal for those who prefer to intervene as little as possible and have low furniture under which the robot must pass. The optional plumbing connection kit adds extra convenience if you decide to invest in it later.
Choose the Roborock Qrevo Curv if you live in a large house that requires significant autonomy (240 minutes) and need to overcome steps or complex level changes. Its extendable and anti-tangle side brush, together with the dual AI camera and pet recognition, make it the most technologically complete option. The built-in voice assistant provides additional convenience for controlling it without app or external devices.
Choose the Roborock Qrevo Edge S5A if you want a reliable and efficient Roborock robot vacuum without paying for advanced features you may not need. It's perfect for medium-sized homes, without pets requiring specific recognition, and where remote camera access is not a priority. It offers a solid balance between features and a compact design in height.
