Introduction
The Roborock Qrevo Edge 2 and the Roborock Saros 20 represent two premium offerings within the catalogue of the world's leading robot vacuum brand. Both units integrate a complete multifunctional base with hot water mop washing and thermal drying, as well as advanced navigation technology and obstacle detection. However, there are significant technical differences that orient them towards different user profiles.
The Qrevo Edge 2, launched in May 2026, opts for a balanced design with retractable LiDAR navigation and 25,000 Pa suction power. The Saros 20, introduced in February 2026, elevates performance with 36,000 Pa of power, StarSight 2.0 system with dual AI camera and exceptional ability to overcome obstacles up to 45 mm on a single step or 88 mm on a double step. This robot vacuum comparison analyses in detail which model is better suited to each household's needs.
Power and Suction
The power difference between both models is notable. The Roborock Saros 20 reaches 36,000 Pa, exceeding the Qrevo Edge 2 by 11,000 Pa. In practice, this translates into greater capacity to extract ingrained dirt from long-pile carpets or tile joints.
Both use the DuoDivide anti-tangle brush system, designed to push hair and pet fur towards the central suction gap, minimising tangles. Both feature a main brush that lifts during mopping and an extendable side brush to improve corner cleaning.
The Saros 20 also incorporates a liftable side brush, a function that allows the side brush to be raised during mopping to prevent it from interfering with the mops. The Qrevo Edge 2 does not have this feature. Both include an anti-tangle side brush, which facilitates maintenance in households with pets.
Mopping
Both robots are equipped with a dual rotating mop system with edge extension. The main difference lies in mopping pressure and revolutions: the Qrevo Edge 2 applies 8N of pressure at 230 RPM, whilst the Saros 20 exerts 13N at 200 RPM. Higher pressure means better ability to remove stuck-on stains, although lower rotation speed.
Mop lift also varies. The Qrevo Edge 2 lifts them 12 mm, sufficient for most medium-thickness carpets. The Saros 20 offers adjustable lift between 12 and 22 mm, adapting better to thick carpets or higher doormats.
Both mop with warm water, automatically remove the mops at the base to perform vacuum-only tasks, and detect dirt both on the mops and on the floor to reinforce mopping in areas that need it. This intelligent detection allows the robot to automatically go over dirtier areas without manual intervention.
Navigation System
Here we find an important architectural difference. The Qrevo Edge 2 features 360° retractable LiDAR navigation, a traditional laser system that maps the environment with millimetre precision. The Saros 20 incorporates StarSight 2.0, which combines advanced navigation with dual AI camera for more complete visual recognition of the environment.
The Saros 20's dual camera system allows it to recognise up to 300 different types of obstacles, compared to the Qrevo Edge 2's 280. Both include a front 3D laser sensor, pet recognition, curtain detection, remote camera access and LED for night vision. Both use SmartPlan 3.0 for intelligent AI cleaning and automatically recognise stains.
Both models allow home monitoring via remote camera access, a useful function for surveillance when we're not at home.
Autonomy and Battery
The Saros 20's battery has 6,400 mAh, 1,200 mAh more than the Qrevo Edge 2. This difference partially compensates for the higher consumption derived from the 36,000 Pa of power. The Qrevo Edge 2 declares 188 minutes of autonomy, a figure that allows its performance on large surfaces to be estimated. The Saros 20 does not specify duration in minutes.
For homes over 150 m², it's worth considering battery capacity alongside energy efficiency. Higher power doesn't always mean lower autonomy if intelligent motor management is optimised.
Smart Functions
The ability to overcome obstacles marks a decisive difference between both robots. The Qrevo Edge 2 can cross height differences of up to 20 mm, sufficient for most transitions between rooms and conventional carpets. The Saros 20 overcomes single steps of up to 45 mm or double steps of up to 88 mm, which allows it to navigate much more pronounced obstacles such as low steps, raised furniture bases or complex architectural height differences.
Both integrate their own voice assistant and compatibility with external assistants such as Alexa or Google Home, facilitating control via voice commands without needing to open the mobile app.
Multifunctional Cleaning Base
Both bases perform auto-emptying of the dust container, mop washing with hot water and drying with hot air at 55°C. The washing temperature differs: the Qrevo Edge 2 washes at 80°C, whilst the Saros 20 reaches 100°C. Higher temperature water improves sanitisation and better removes grease residue or stuck-on dirt from the mops.
The tray self-cleaning system also presents differences. The Qrevo Edge 2 features self-cleaning 2.0, whilst the Saros 20 incorporates self-cleaning with hot water at 100°C, guaranteeing a higher level of disinfection of the washing tray itself.
Only the Saros 20 includes a detergent tank in the base, automatically dispensing cleaning product during mop washing. The Qrevo Edge 2 does not have this function. Neither has integrated plumbing connection or optional kit, so they require manual refilling of clean water and emptying of the dirty water tank.
The dust bag capacity is slightly higher on the Qrevo Edge 2 (2.7 litres versus 2.5 litres). The clean water tank is identical on both (4 litres), but the dirty water tank varies: 3.5 litres on the Qrevo Edge 2 and 3 litres on the Saros 20. These tanks allow several cleaning sessions before requiring manual maintenance.
Dimensions
The diameter of both robots is practically identical: 352 mm for the Qrevo Edge 2 and 353 mm for the Saros 20. The height also matches at 79.8 mm, which allows them to access under furniture with a clearance of at least 8 cm. The robot's internal tanks vary slightly: the Qrevo Edge 2 has 240 ml for dust and 67 ml for water, whilst the Saros 20 reaches 270 ml for dust and 69 ml for water.
The bases present relevant dimensional differences. The Qrevo Edge 2 base measures 340 mm wide, 521 mm high and 487 mm deep. The Saros 20's is wider (381 mm), less tall (488 mm) and slightly less deep (475 mm). In spaces with height restrictions, the Saros 20 base may be easier to integrate.
Real-world usage experience
For homes with thick carpets or doormats over 12 mm thick, the Saros 20 offers clear advantages thanks to its adjustable mop lift up to 22 mm and higher suction power. The ability to overcome steps up to 45 mm makes it a particularly interesting option for homes with complex architecture, height differences between rooms or raised furniture bases.
In homes with pets, both robots work well thanks to the DuoDivide anti-tangle brush and the anti-tangle side brush. The Saros 20's higher power facilitates extraction of hair embedded in long-pile carpets. The Saros 20's liftable side brush prevents it from getting wet during mopping, something that can improve durability in intensive use.
The Saros 20's detergent tank simplifies maintenance by automatically dispensing cleaning product, whilst on the Qrevo Edge 2 it would need to be added manually to the clean water tank if you wish to use it. The Saros 20's mop washing at 100°C provides greater sanitisation, especially relevant in homes with young children or allergy sufferers.
The Qrevo Edge 2's LiDAR navigation is precise and reliable, although the Saros 20's StarSight 2.0 system with dual camera offers more advanced visual recognition, useful in environments with many small objects on the floor or frequent furniture changes.
Conclusion: Which to choose?
Choose the Roborock Qrevo Edge 2 if you're looking for: A complete Roborock robot vacuum with multifunctional base, precise LiDAR navigation and balanced performance at a presumably more competitive price. It's suitable for homes without pronounced height differences, with medium-thickness carpets and users who value the reliability of traditional laser navigation. Its larger dust bag capacity (2.7 litres) reduces maintenance frequency.
Choose the Roborock Saros 20 if you need: Maximum suction power (36,000 Pa), ability to overcome obstacles up to 45 mm on a single step or 88 mm on a double step, and the best mopping system with 13N pressure and mop washing at 100°C. It's the best robot vacuum for homes with complex architecture, thick carpets, long-haired pets or users who prioritise maximum sanitisation. The automatic detergent tank and dual AI camera with StarSight 2.0 provide convenience and superior visual recognition. Its higher capacity battery (6,400 mAh) compensates for the consumption derived from the additional power, being more suitable for large surfaces over 150 m².
In short, this comparison between the Qrevo Edge 2 and the Saros 20 shows two different approaches within Roborock's premium range: one balanced and versatile, the other oriented towards maximum performance and adaptability to demanding environments.
