Roborock Qrevo Slim review

Product name: Introduction

• Type: Robot vacuum cleaner with mopping
• Docking: Self-empty, self-cleaning station 
• Navigation system: 3D ToF, StarSight Autonomous System

Despite falling into the Roborock’s mid-range ‘Q’ line-up of robot vacuum cleaners, the Roborock Qrevo Slim introduces brand-new technology and leading suction to the Chinese brand that is widely considered the best in the robo cleaning business.

Ditching LiDAR for the new StarSight Autonomous System for navigation, this robot is, as its name suggests, able to squeeze under more furniture, as it is only 82mm high.

Introduced at IFA 2024, the Qrevo Slim is the result of more than five years of work and is able to capture height and depth data in order to recognise and avoid up to 73 obstacles, including your furry friends.

If your cat or dog suddenly appears, the Qrevo Slim’s main brush will stop and it will adjust its trajectory. 

It’s not cheap though, with a price-tag that isn’t quite as punchy as Roborock’s top S Series models like the S8 MaxV Ultra, but it’s a darn site more than its Q Series stablemate, the Roborock Q5 Pro.

Guide: Roborock models compared

It’s a price-point that puts it up agains the likes of the Eufy Omni S1 Pro and the Samsung Bespoke Jet Bot Combo but it more than holds its own against those two, which are both considered flagships for their brands.

Read our comprehensive Roborock QRevo Slim review to find out why…

Design and components

• Time of Flight (ToF) sensors 
• Duo rollers to prevent hair wrapping 
• FlexiArm for better edge performance  

Although a round robot, the Roborock Qrevo Slim looks different to those that have come before from the Roborock stable, as it doesn’t have the LiDAR dome on top.

In some ways, the lack of LiDAR makes this robot look more like a budget model from a few years ago, but that’s definitely not the case. 

At the front of the robot is the new StarSight Autonomous System, which uses Time of Flight (ToF) sensors to let the robot map its surroundings and even spot and detect relatively small objects. 

Roborock’s StarSight Autonomous System uses a combination of 21,600 sensor points, 38,400Hz sampling frequency and a RGB camera for precise navigation and obstacle detection. 

As the Slim’s sensors are at the front, the robot mostly maps and navigates by what it’s looking at. Roborock has sensors at the rear to help the robot better understand is surroundings.  

And, there’s a camera at the front, which is used to spot and avoid common obstacles, similar to the system in the high-end S8 MaxV Ultra. 

Cutting LiDAR out means that the robot is much slimmer than most of the competition, standing just 82mm tall. That means that it can get under a wider range of objects, such as sofas and sideboards, so you can arguably clean more with this robot. 

Underneath, the Slim has used most of Roborock’s recent innovations. There’s a FlexiArm side brush, which can swing out to tease dirt out of corners and at the edges of rooms. 

Dual contra-rotating floor brushes are in place, designed to agitate dirt while avoiding getting clogged with hair (and they really work, refusing to get clogged with long hair). With 11,000Pa of suction power, the Slim sits at the top of Roborock’s range. 

These brushes can lift off the floor, preventing dirt being smeared over a freshly mopped floor, as the Slim returns to its docking station. 

For mopping, there are two microfibre mopping pads, one of which is a FlexiArm model, able to swing out to provide true edge mopping. 

For carpets, these pads can lift 10mm off the ground, which should let the Slim traverse most shortpile carpets. However, if you need more flexibility for deep pile carpet, then a robot that can lift its pads or leave them behind in the docking station, such as the Samsung Bespoke Jet Combo AI+ may be a better choice. 

This robot comes with Roborock’s Multifunctional Dock 3.0, which has dual 4-litre tanks: one for fresh water, which is used for filling the robot’s mopping tank and for cleaning its mopping pads, and one for dirty water. 

If you prefer, there is a version of the Roborock Qrevo Slim that has a plumbed-in dock that you don’t have to manually fill or empty. 

Both docks clean the mopping pads with hot water, which is great for sanitising and helps with mopping. After cleaning, the mop pads are dried with hot air. However, there’s no detergent option in this dock, as you get with the high-end S8 MaxV Ultra or Eufy S1 Omni. 

Large 3-litre bags are used for dust collection. This is, according to the company, enough space to hold up to seven weeks’ worth of dirt. 

As it vacuums, the Slim uses its own bin to collect dirt as it goes around. This lifts out easily enough, and should be washed and cleaned, along with its filter, at least monthly. 

The app

One of the best things about buying a Roborock vacuum cleaner is that they all use the same, superb app. The competition may be catching up, but the Roborock app remains the best in the business. 

After first connecting the Roborock Qrevo Slim to your Wi-Fi and app, the robot goes on a short mapping run, using its sensors to detect the layout of your home. When done, the app takes a guess at where rooms are, and it’s actually pretty good.  

If the robot gets a few things wrong, it’s trivial to merge or split rooms to get the layout that you want. 

Although the Slim is small enough to slip under most furniture and smart enough to cleanly navigate most homes, there may be some homes or bits of furniture that it struggles with, so you can set no-go zones.  

Furniture can be added to the map in the rough location it is in real life. Furniture can be tapped to create a cleaning zone. It’s handy for cleaning up after a meal, for example. 

The app also gives the main cleaning modes: room (or rooms), the entire home and zone cleaning where you draw a box on the map. 

For each selection, you can then use SmartPlan to let the Qrevo Slim choose its power settings, or you can manually select the cleaning options. 

There’s a choice to vacuum only, mop only, or vacuum and mop at the same time. For each selection, you can choose the suction power with a choice of four suction modes, and four water flow options. 

There’s also a choice of quick and standard cleans for vacuuming and mopping; select mopping only, and there’s are two additional route modes to give a deep clean, while selecting Vacuum only adds one extra power mode, Max+ 

Just in case that wasn’t enough, each cleaning mode gives you the choice to make one or two passes with the robot. 

Dive into the additional settings menu, and there’s even more control over how the robot works. Automatic Remopping is a very useful mode, where the docking station can detect how dirty the mopping pads are and then send the robot out again to cover a particularly dirty area automatically. 

There’s more control over how the robot deals with carpets, with a choice to avoid them completely, ignore them (fine for carpets that can get wet), or lifting its pads.

It’s a shame that the map doesn’t support no-mop zones to tell the robot not just to avoid a delicate carpet or rug. 

Performance

• Powerful vacuuming 
• Excellent mopping 

It’s quick and easy to start the robot off on a clean using the app, or you can start a whole-home clean using the buttons on the front of the robot. 

With 11,000Pa of suction power, the Roborock Qrevo Slim is, on paper, one of the most powerful robot vacuum cleaners, with even more suction than the flagship S8 MaxV Ultra.  

Fortunately, this suction power translates into brilliant cleaning performance. With carpets, the suction power’s enough to suck dust contained deep within the fibres, giving a full clean. 

Hard floors are easier to vacuum, but the Roborock Qrevo Slim didn’t miss a spot when it went about my ktichen. And, the FlexiArm helps dislodge and collect dirt that collects around the edges of rooms. 

Mopping performance is also very good. Once washed and saturated with hot water, the Roborock Qrevo Slim can remove most ground-in stains on hard floors in just a couple of passes. Tougher stains can take multiple passes after this. 

To that end, the Eufy Omni S1 Pro can do more on a singe pass, with its roller physically removing dirt from the floor and self-cleaning as it goes. 

Navigation is as good as you’d hope. Ably moving around a crowded room, I found that the Roborock Qrevo Slim could fit under the corner sofa without getting stuck (a task that many other robots fail at), and it managed to get close to furniture without barging it.  

Obstacle avoidance isn’t quite as good as with the camera-based systems, and the Roborock Qrevo Slim did run into my fake pet mess while it was out and about. 

Sound came in at 59.8dB, which makes this robot impressively quiet to the point where it’s not particularly annoying to use while you’re in the same room as it.  

Battery life is also brilliant. Roborock quotes 180-minutes on the lowest power setting, but up this to more useful levels and you’ll find that you can easily clean a floor of a house with two passes and have power left for spot jobs. In short, the Roborock Qrevo Slim is ready to go when you need it to. 

Final thoughts

If you’ve got lots of low furniture that you’d like to clean under, the Roborock Qrevo Slim is an exceptional robot.

Not only can it get to places that other robots can’t reach, but its high suction power also means it can clean these areas, as well as traditional carpet and hard floors brilliantly.

It’s a great mop, too, struggling only with the very toughest of stains. I’d like to see better AI obstacle avoidance, but that aside, this very much feels like a proper high-end robot vacuum and mop. 

How we test

When we publish our reviews, you can rest assured that they are the result of “living with” long term tests.

Robot cleaners usually live within an ecosystem, or a range of products that – supposedly – all work in harmony. And they are designed to offer a range of different cleaning options. Therefore, it’s impossible to use a robo cleaner for a week and deliver a verdict.

Because we’re testing smart home kit all day, everyday, we know what matters and how a particular smart cleaning machine compares to alternatives that you might also be considering.

Our reviews are comprehensive, objective and fair and, of course, we are never paid directly to review a device.

Read our guide on how we test robot vacuum cleaners to learn more.

FAQs

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