Introduction
We're looking at two Roborock models here that represent different approaches to automated cleaning. The Qrevo Curv S5X arrived in 2024 as a high-performance option with some serious aspirational power, whilst the QV 35A landed in 2025 as a more streamlined alternative. Both come from Roborock, the world's leading manufacturer in this category, known for reliable hardware and excellent app integration.
The Qrevo Curv S5X positions itself as a powerhouse designed for demanding homes with complex layouts, pet hair challenges, and users who want minimal intervention. The QV 35A takes a slightly different route—it's still capable, but strips back some of the more advanced features to deliver solid performance at what's likely a more accessible price point. Understanding which suits your home depends on how much automation you actually need and whether those extra features justify the investment.
Differences at a Glance
- Suction power: 18,500 Pa versus 8,000 Pa—a substantial gap
- Brush system: DuoDivide anti-tangle design versus standard single brush
- Side brush extension for corners only available on the Qrevo Curv S5X
- Mop extension for edge cleaning exclusive to the Qrevo Curv S5X
- Dirt detection on mops and floors present only on the Qrevo Curv S5X
- Hot water mop washing versus cold water washing
- Hot air mop drying versus cold air drying
- Base self-cleaning 2.0 system only on the Qrevo Curv S5X
- SmartPlan 2.0 versus SmartPlan 1.0 AI cleaning logic
- Slightly different base dimensions and capacities
Power and Suction
The most striking difference here is raw suction capability. The Qrevo Curv S5X delivers 18,500 Pa, which places it firmly in flagship territory. This kind of power makes a real difference when dealing with embedded dirt in carpets, pet hair ground into fibres, or debris tucked into grout lines. The QV 35A offers 8,000 Pa—perfectly adequate for hard floors and light carpets, but you'll notice the difference on thicker pile or when dealing with stubborn debris.
The brush system tells another part of the story. Roborock's DuoDivide design on the Qrevo Curv S5X uses a split roller configuration that channels hair and debris toward the central suction point, significantly reducing tangles. It's one of the most effective anti-tangle systems available. The QV 35A uses a simpler single brush with anti-tangle properties, which helps, but won't match the DuoDivide's performance if you're dealing with long hair or shedding pets.
Both models include anti-tangle side brushes, which is good news for general maintenance. However, only the Qrevo Curv S5X features an extendable side brush. This swings out when approaching corners and edges, capturing debris that would otherwise be missed. In practice, this means fewer manual touch-ups along skirting boards.
Mopping
Both robots use dual rotating mops, which apply consistent pressure and scrubbing action—far superior to static drag pads. They both lift their mops 10mm when transitioning to carpets, enough clearance to avoid wetting most rugs.
The Qrevo Curv S5X includes mop extension, allowing one pad to reach further into edges and corners. Combined with the extendable side brush, this model covers borders more thoroughly than most competitors. The QV 35A lacks this feature, so you'll see a slight gap along wall edges after mopping.
Dirt detection is where things get interesting. The Qrevo Curv S5X monitors both mop cleanliness and floor soiling levels. When it detects heavily soiled areas, it can increase scrubbing intensity or make additional passes. It also knows when its mops are dirty and returns to the base for washing. The QV 35A doesn't include these sensors, so it follows a more uniform cleaning pattern regardless of actual conditions.
Navigation System
Both models use Roborock's 3D LiDAR turret navigation with obstacle avoidance capabilities. They'll map your home accurately, navigate efficiently, and detect objects to avoid collisions. Neither includes a front-facing AI camera, laser 3D sensors, pet recognition, or remote camera access—features reserved for even higher-end models or different product lines.
The software intelligence differs slightly. The Qrevo Curv S5X runs SmartPlan 2.0 with the RR Mason 11.0 processor, which handles more complex decision-making about room sequencing, cleaning intensity adjustments, and route optimisation. The QV 35A uses SmartPlan 1.0, which is still competent but doesn't adapt as dynamically to changing conditions. For most homes, you won't notice this day-to-day, but larger properties with multiple floor types benefit from the more sophisticated logic.
Battery and Autonomy
Identical battery specifications here: 5,200 mAh capacity delivering 180 minutes of runtime. That's enough for approximately 250-300 square metres in mixed cleaning mode. Both models will handle most homes on a single charge, returning to base only when necessary. Neither has a particular advantage in this department.
Intelligent Features
Both robots can climb obstacles up to 20mm—sufficient for most door thresholds and carpet transitions. Neither includes a robotic arm or proprietary voice assistant, though both integrate with Alexa and Google Home for external voice control. These are fairly standard capabilities across modern robot aspirateurs, so no meaningful distinction here.
Multifunction Base Station
This is where maintenance automation diverges significantly. The Qrevo Curv S5X washes its mops with hot water, which cuts through grease and grime more effectively than cold water. It then dries them with heated air, speeding up the process and reducing the risk of mildew or unpleasant odours. The QV 35A uses cold water washing and cold air drying—it still works, but takes longer and may leave mops slightly damp between cycles.
The Qrevo Curv S5X also includes base self-cleaning 2.0, which automatically flushes and cleans the wash tray to prevent residue build-up. The QV 35A requires manual cleaning of this component periodically. Over weeks and months, this adds up to noticeable maintenance time.
Dust bag capacity is similar: 2.5 litres versus 2.7 litres. Both hold several weeks' worth of debris for average homes. Clean water tanks are identical at 4 litres, whilst the dirty water tank is slightly smaller on the Qrevo Curv S5X at 3 litres versus 3.5 litres on the QV 35A. Neither supports plumbing connection, even as an optional kit.
Dimensions
The robots themselves are nearly identical in size. The Qrevo Curv S5X measures 352mm in diameter and stands 98mm tall. The QV 35A is fractionally smaller at 353mm diameter and 96.5mm height—essentially the same footprint. Both should fit under most furniture with standard clearance.
Base station dimensions differ more noticeably. The Qrevo Curv S5X has a compact square footprint at 450mm in all dimensions—width, height, and depth. The QV 35A is narrower at 340mm but taller at 521mm and deeper at 487mm, giving it a more vertical profile. Depending on your available space, one configuration may suit better than the other. The Qrevo Curv S5X sits more naturally in corners, whilst the QV 35A might fit better in narrow alcoves.
Real-World Experience
For larger homes with mixed flooring, pets, and a preference for minimal intervention, the Qrevo Curv S5X makes more sense. The higher suction power tackles embedded pet hair and carpet dirt more aggressively. The DuoDivide brush reduces how often you'll need to cut away tangled hair. Dirt detection ensures heavily trafficked areas get extra attention without manual scheduling. Hot water mop washing and hot air drying mean the system stays fresher with less hands-on maintenance.
The QV 35A suits smaller properties or homes with predominantly hard flooring where extreme suction isn't critical. It still delivers effective cleaning, just without the adaptive intelligence and extended reach of its more expensive sibling. You'll need to be slightly more involved—checking the base wash tray occasionally, accepting that edges won't be quite as thoroughly covered, and potentially running extra cycles in high-traffic zones.
Both models handle standard thresholds and integrate smoothly with voice assistants. Battery life is sufficient for most residential properties. The question really comes down to whether you value the additional automation and performance enough to justify the price difference.
Conclusion: Which Should You Choose?
Choose the Roborock Qrevo Curv S5X if: you have a larger home with multiple floor types, pets that shed, or simply want the best possible cleaning performance with minimal maintenance. The superior suction, DuoDivide brush, mop and brush extensions, dirt detection, and hot water/hot air base systems justify the investment if you can afford it. This is the better robot aspirateur for 2025 if your budget allows.
Choose the Roborock QV 35A if: you're working with a tighter budget, have a smaller home primarily with hard floors, and don't mind slightly more hands-on maintenance. It's a capable machine that covers the fundamentals well—just without the flagship refinements. For straightforward cleaning tasks without extreme demands, it represents solid value.
In this comparativa de robots aspiradores, the Qrevo Curv S5X clearly positions itself as the premium option, whilst the QV 35A offers a more accessible entry point into Roborock's ecosystem. Understanding the differences between these models helps you match features to actual needs rather than paying for capabilities you won't use—or missing out on automation that would genuinely improve your daily routine.
