Introduction
Roborock dominates the global robot vacuum market, and these two 2024 models represent their most advanced offering. The Roborock Qrevo Curv and the Roborock S8 MaxV Ultra share the same philosophy of complete cleaning with a multifunctional base, but are designed for different user profiles. Both integrate laser navigation, AI camera and mopping capability with automatic mop washing. The difference lies in the details: power, autonomy, mopping system and some extras that can make a difference to daily experience in large homes or those with specific needs.
The Qrevo Curv is positioned as the most powerful and autonomous model, whilst the S8 MaxV Ultra focuses on precision in stain detection and an integrated detergent tank. Let's see where the real differences lie.
Power and Suction
Suction power marks the first major difference. The Roborock Qrevo Curv reaches 18,500 Pa, almost double the 10,000 Pa of the S8 MaxV Ultra. This figure translates into better performance on carpets, especially long-pile ones, and greater capacity to pick up ingrained dirt from tile joints.
Both incorporate the DuoDivide system, a dual main brush design that pushes hair towards the central gap to prevent tangles. It works well in homes with pets. The main brush can be raised during mopping on both models, which prevents dragging wet dirt throughout the house.
The side brush is also extendable on both robots, improving corner cleaning. However, the Qrevo Curv adds an anti-tangle design to the side brush that the S8 MaxV Ultra doesn't have. In practice, this reduces manual maintenance if there's long hair at home, whether from people or animals.
Mopping
Here we find important differences in approach. The Qrevo Curv uses two rotating mops with full edge extension, whilst the S8 MaxV Ultra opts for a vibrating mop with an additional side mini mop. Rotating mops typically offer better pickup of adhered dry dirt, whilst the vibrating system is gentler on sensitive floors.
Mop lifting works differently. The Qrevo Curv has a variable 10-20 mm system that adapts according to surface type or if it detects carpets. The S8 MaxV Ultra maintains a fixed 20 mm lift. Both systems are effective at avoiding wetting carpets, but the variable adjustment may prove more versatile in homes with different floor types.
Both models wash the mops with hot water in the base and dry them with hot air. This ensures mopping is always carried out with clean mops and prevents bad odours. Additionally, both detect dirt on the mops and floor, activating re-mopping cycles when necessary. Neither automatically removes the mops at the base to switch to vacuum-only mode, something that some high-end competitors do offer.
The S8 MaxV Ultra includes a detergent tank in the base, something the Qrevo Curv doesn't have. This allows cleaning product to be dispensed during mop washing, improving results on difficult stains. It's a minor difference, but noticeable if you're looking for deep cleaning without manual intervention.
Navigation System
Both robots feature 3D LiDAR turret, dual AI camera and front 3D laser sensor. Navigation is precise and fast in both cases, with real-time mapping and the ability to recognise rooms automatically.
The S8 MaxV Ultra recognises 73 different types of obstacles, compared to 62 on the Qrevo Curv. In practical terms, both avoid cables, slippers, toys and pet excrement without problems. The difference of 11 additional objects is marginal in daily use.
The Qrevo Curv integrates SmartPlan 2.0, an evolution of the SmartPlan 1.0 that the S8 MaxV Ultra features. This improved version adjusts cleaning routes more efficiently according to the type of dirt detected and usage history. The S8 MaxV Ultra, on the other hand, includes AI stain recognition, a function that allows particularly dirty areas to be identified and more passes or greater power to be applied automatically. The Qrevo Curv doesn't have this specific function.
Both offer remote camera access and night vision LED. This allows you to monitor the home or locate pets from the app, even in low light.
Autonomy and Battery
The Roborock Qrevo Curv features a 6,400 mAh battery that offers up to 240 minutes of autonomy. The S8 MaxV Ultra has 5,200 mAh and 180 minutes. The one-hour difference can be decisive in large homes or those with multiple floors, where the robot needs to complete long cycles without interruptions.
With that autonomy, the Qrevo Curv can cover larger surfaces in a single run, reducing the need for intermediate recharges. The S8 MaxV Ultra is sufficient for medium-sized flats, but in homes over 150 square metres it may need to return to base before finishing.
Smart Functions
The Qrevo Curv incorporates an intelligent step system that allows it to overcome obstacles adaptively. The S8 MaxV Ultra can overcome height differences of up to 20 mm, but without the automatic adjustment of the Qrevo Curv. This can be particularly noticeable in transitions between rooms with different floor types or small steps on patios.
Both robots include their own voice assistant, in addition to compatibility with Alexa and Google Home. This allows cleaning to be controlled via voice commands without needing to open the app.
Multifunctional Cleaning Base
Both bases offer auto-emptying of the dust bin, mop washing with hot water and drying with hot air. The dust bag has a capacity of 2.5 litres in both cases, sufficient for several weeks without maintenance. The clean water tanks are 4 litres, whilst the dirty water tank is 3 litres on the Qrevo Curv and 3.5 litres on the S8 MaxV Ultra.
The most relevant difference is in the washing tray self-cleaning. The Qrevo Curv integrates version 2.0, which cleans the tray more thoroughly and frequently. The S8 MaxV Ultra doesn't include this function, which may require occasional manual cleaning to prevent residue build-up.
Neither has UV disinfection nor integrated connection to water pipes. Nor do they offer an optional kit for this connection.
Dimensions
The diameter of both robots is virtually identical: 352 mm on the Qrevo Curv and 353 mm on the S8 MaxV Ultra. The height also matches at 103 mm, which allows them to pass under low furniture without problems.
The bases have different sizes. The Qrevo Curv's is more square, with 450 mm width, height and depth. The S8 MaxV Ultra's is more compact in width (409 mm) and depth (419 mm), but slightly taller (470 mm). If floor space is limited, the S8 MaxV Ultra's base takes up less surface area, although it protrudes slightly more vertically.
Real-World Usage Experience
The Roborock Qrevo Curv is designed for large homes, especially if they exceed 150 square metres. The 240-minute autonomy and 18,500 Pa power allow large surfaces to be cleaned without recharging and with better performance on thick carpets. The mopping system with rotating mops and full extension is more effective in kitchens and bathrooms with adhered dirt.
The S8 MaxV Ultra is more balanced for medium-sized flats. The 180-minute autonomy covers up to 120-130 square metres well. AI stain recognition and the detergent tank in the base improve mopping in high-traffic areas. The more compact base makes installation easier in tight spaces.
For homes with pets, the Qrevo Curv has an advantage due to the anti-tangle side brush and the larger dust bin capacity in the robot (325 ml versus 270 ml). This reduces the frequency of emptying during cleaning and manual brush maintenance.
Conclusion: Which to Choose?
Choose the Roborock Qrevo Curv if: you live in a large home over 150 square metres, have thick carpets or pets with long hair, and are looking for maximum autonomy and power. The mopping system with rotating mops and advanced tray self-cleaning reduce maintenance. The ability to intelligently overcome steps is useful in homes with different levels or patios.
Choose the Roborock S8 MaxV Ultra if: your home doesn't exceed 130 square metres, you value automatic stain recognition and prefer a more compact base. The integrated detergent tank improves mopping without manual intervention. It's a more balanced option for flats with hard floors and frequent but less demanding cleaning needs than in large homes.
