Introduction
The Cecotec Conga X70 and the Roborock QV 35A represent two different approaches within the robot vacuum cleaners launched in 2025. Whilst Cecotec opts for high suction power and advanced navigation functions, Roborock focuses on the reliability of its SmartPlan 1.0 system and integration with external voice assistants. Both units include a multifunction base with auto-emptying, mop washing and drying, which places them in the mid-to-high segment of the market.
The Cecotec model is more compact in height, whilst the Roborock stands out for its declared autonomy of 180 minutes. The choice between one or the other will depend on the user's priorities: raw power versus intelligent space management.
Power and Suction
The most striking difference in this section is the suction power. The Cecotec Conga X70 reaches 15,000 Pa, almost double the 8,000 Pa of the Roborock QV 35A. In practice, this translates into greater capacity to extract embedded dirt from carpets or pick up heavier particles.
The main brush also marks differences. The Conga X70 mounts a traditional bristle brush, effective but prone to tangles with long hair. The Roborock QV 35A uses a simple brush which, although it does not specify anti-tangle technology on the main roller, does incorporate an anti-tangle side brush. This detail proves useful in homes with pets or people with long hair, as it reduces maintenance of the brush that sweeps the corners.
Neither of the two models lifts the main brush during mopping, nor do they feature an extendable or liftable side brush. This may slightly limit effectiveness in corners during combined mopping mode.
Mopping
Both robots integrate a two rotating mop system, which guarantees deeper mopping than simple drag mops. The main difference lies in mop extension: the Conga X70 does incorporate it, allowing better mopping of edges and skirting boards. The Roborock QV 35A does without this function.
Regarding mop lifting, the Roborock QV 35A reaches 10 mm compared to the 8 mm of the Conga X70. Although the difference is small, those additional 2 mm can make a difference when moving over short-pile carpets without wetting them.
Where the Conga X70 takes the advantage is in mop drying. Its base uses hot air, which speeds up the process and reduces the risk of bad odours or bacterial growth. The Roborock QV 35A dries with cold air, less efficient in this aspect. Both bases wash the mops with cold water and do not include a detergent tank or self-cleaning of the washing tray.
Neither of the two models automatically removes the mops at the base nor detects dirt on the mops or floor to go over dirtier areas again. This can be particularly noticeable in kitchens or high-traffic areas.
Navigation System
Both robots mount a 3D LiDAR turret to map the home with precision. The difference lies in the obstacle avoidance systems. The Cecotec Conga X70 adds an AI camera and front 3D laser sensor, which in theory improves detection of small objects on the floor. The Roborock QV 35A relies on its avoidance system without specifying a front camera or 3D laser sensor.
The Roborock QV 35A compensates for this shortcoming with SmartPlan 1.0, an intelligent cleaning system that optimises routes and prioritises areas according to use. The Conga X70 does not incorporate this advanced planning function. Neither recognises pets, detects curtains nor allows remote camera access, nor do they include LED for night vision.
Autonomy and Battery
Both robots share the same battery capacity: 5,200 mAh. However, the Roborock QV 35A declares 180 minutes of autonomy, a figure that the Conga X70 does not specify. This information proves useful for calculating the surface area it can cover on a single charge, especially in large homes.
Data on charging time or maximum recommended surface area is not available for either model, which makes it difficult to assess real performance in homes of more than 150 square metres.
Smart Functions
The Cecotec Conga X70 overcomes obstacles up to 30 mm, compared to the 20 mm of the Roborock QV 35A. This means that the Conga X70 can navigate thicker carpets or small level changes without getting stuck. For homes with multiple carpets or transitions between rooms, this additional capacity makes a difference.
The Roborock QV 35A integrates compatibility with Alexa and Google Home, allowing voice control without needing to open the app. The Conga X70 does not offer this integration, which may be less convenient for users accustomed to managing their smart home through voice commands.
Multifunction Cleaning Base
Both bases include auto-emptying of the dust bin, mop washing and drying. The dust bag of the Roborock QV 35A has a capacity of 2.7 litres, slightly higher than the 2.5 litres of the Conga X70. Both bases mount 4-litre clean water tanks and 3.5-litre dirty water tanks, sufficient for several mopping sessions without manual intervention.
Neither of the two bases incorporates self-cleaning of the washing tray, UV disinfection, detergent tank nor plumbing connection kit. Nor do they allow automatic mop changing. Manual maintenance of the tray will be necessary in both cases to avoid accumulation of limescale or dirt.
Dimensions
The Roborock QV 35A measures 96.5 mm in height, compared to the 110 mm of the Conga X70. This difference of 13.5 mm can prove decisive for accessing under low furniture, sofas or beds with little clearance. In homes with furniture with short legs, the Roborock has a clear advantage.
The diameter also varies: 340 mm for the Conga X70 and 353 mm for the Roborock QV 35A. The Cecotec model is more compact in this sense, which facilitates navigation in narrow spaces or between chair legs.
The bases present notable differences. The Conga X70's measures 450 mm in height and 425 mm in depth, whilst the Roborock's reaches 521 mm in height and 487 mm in depth. It is advisable to measure the available space before installing the base, especially if you plan to place it under furniture or in a tight corner.
Real-World Experience
For large homes, the Roborock QV 35A offers greater declared autonomy (180 minutes) and an intelligent planning system that optimises routes. The Conga X70 compensates with greater suction power, useful in homes with thick carpets or pets that shed a lot of hair.
In homes with pets, the Roborock's anti-tangle side brush reduces maintenance, although the superior power of the Conga X70 can pick up more hair in each pass. The Conga X70's ability to overcome obstacles up to 30 mm proves advantageous if there are high-pile carpets.
For users who prioritise mopping, the Conga X70 offers extendable mops for edges and hot air drying, which improves the final result and reduces odours. The Roborock QV 35A lifts the mops 2 mm more, better protecting carpets during mopping.
If the home has low furniture, the Roborock QV 35A accesses more easily thanks to its 96.5 mm height. The Roborock's integration with Alexa and Google Home simplifies daily control for those who already use these assistants.
Conclusion: Which to Choose?
Choose the Cecotec Conga X70 if: You're looking for maximum suction power for carpets or pets, you value hot air mop drying to avoid bad odours, you need extendable mops to better mop edges, or you have thick carpets that require overcoming obstacles up to 30 mm. Also if you prefer a more compact robot in diameter and don't mind doing without external voice control.
Choose the Roborock QV 35A if: You prioritise the declared autonomy of 180 minutes for large homes, you value the intelligent planning of SmartPlan 1.0 that optimises routes, you need integration with Alexa or Google Home, or you have very low furniture that requires a robot of only 96.5 mm in height. The anti-tangle side brush reduces maintenance in homes with long hair or pets.
