Roborock Qrevo Slim mopping robot vacuum review

Billed as the slimmest robot vacuum with 3D time-of-flight, or ToF, technology (a method for measuring distance between a sensor and an object), Roborock’s Qrevo Slim mopping robot vacuum promises a lot.

In addition to not bumping into objects around your home, it’s low enough to scoot under furniture, has an RGB camera to spot dirt, and can detect floor types, ramping up the suction and discontinuing mopping for soft surfaces.

However, it’s the built-in voice control which doesn’t require a smart speaker that you might value the most: it’ll respond to a host of commands, from starting and stopping cleaning to sending it back to the dock.

Design and Build

• Low-profile robot
• 1,000Pa suction
• Robot responds to direct voice commands

The first thing you’ll notice about the Qrevo Slim is its size: it’s a sleek 8.2cm tall, allowing it to sweep along kitchen plinths and access the space below beds and sofas (its diameter is pretty average at 35cm).

It’s also fairly lightweight at 4.2kg so easily carried to another floor. Like its dock, the robot is finished in a mix of glossy and matt black plastic.

Rachel Ogden / Foundry

Rachel Ogden / Foundry

Rachel Ogden / Foundry

This is combined with layers of navigation: LiDAR sensors (two at the front, one at the back) and three cameras (an RGB and infrared at the front, an infrared at the back).

Underneath, there’s a pair of rubber rollers for sweeping up dirt along with 11,000 Pa suction, a side brush that reaches into corners and around furniture legs, and two mopping pads (the right one of which also reaches).

Rachel Ogden / Foundry

Rachel Ogden / Foundry

Rachel Ogden / Foundry

On top, for those who like hands-on controls, is a single button that can be pushed a few different ways to either spot clean, start cleaning, send the robot back to the dock, mop only or engage the child lock.

Rachel Ogden / Foundry

Rachel Ogden / Foundry

Rachel Ogden / Foundry

It’s paired with an upgraded Multifunctional Dock 3.0, which washes and dries the mop pads, and contains a larger dust bag for the Qrevo Slim to empty into.

What’s clever though, especially for those who are less tech savvy, is the built-in voice assistant, which doesn’t need to be connected to Wi-Fi to work. By saying ‘Hello Rocky’, you can, for example, ask the Qrevo Slim to clean a specific room (once mapped), or adjust the suction level, thanks to a host of preset commands available in the app. It’ll even remember your conversation on a chat history screen.

Performance and Features

• Easy to edit maps
• Customised cleaning
• Colour camera

Go back by only a few years and robot vacs were still taking an age to map a floor. However, this isn’t so for the Qrevo Slim. We set it off mapping ours and it was done in a few minutes, presenting a floorplan that was easy to divide and name in the app into different spaces.

We liked that it recognised that there were different floor types and presented this on the map, although if it gets it wrong, you can change it.

Rachel Ogden / Foundry

Rachel Ogden / Foundry

Rachel Ogden / Foundry

Another plus of the app is that there are multiple options for customising your clean: it’s possible to choose a fast cleaning mode (great for when guests are about to descend or on your way home), alter how loud the robot’s beeps are (plus there’s a do not disturb option so it won’t make noise when you’re sleeping), four options each for mop water flow and suction power, and you can choose whether you’d like it to go round once or twice.

Or, if you’d prefer the robot to make those decisions, there’s Smart Plan, which makes the cleaning choices for you.

That said, there’s some useful stuff, such as choosing off-peak charging, that’s hard to find, as is spot clean, hidden under a settings menu called Pin n Go, so digging through the menus is a must.

We found the remote viewing via its colour camera interesting but gimmicky. It can be used to take photos of your pets, but this option wasn’t enabled in our app.

Rachel Ogden / Foundry

Rachel Ogden / Foundry

Rachel Ogden / Foundry

We tested the Qrevo Slim’s cleaning on both hard flooring (vinyl) and mid-pile carpet, using flour to represent dust and oats as larger debris. While the clean was mostly good on the hard floor, we noticed that there was a line of oats that hadn’t been picked up once it was finished.

There was also a small amount of flour that had been missed. The performance was spotty on carpet – although this is common for robot vacuums. Our carpet still had flour left behind and a few oats, even when we ran a second cycle on the highest suction power.

Rachel Ogden / Foundry

Rachel Ogden / Foundry

Rachel Ogden / Foundry

On the hard floor, the mopping was tested using a thin layer of brown sauce and mint sauce that had been left for a few hours. The brown sauce was picked up easily but once the floor had dried, later on, we noticed that where the sauce had been still felt sticky underfoot.

Although the mint sauce had dried, flecks of mint stuck to the brush rolls after they had been sucked up. The mop pads tended to spread the flecks of mint to other areas of the floor too. Disappointingly, there are no spare mop pads, so once they were covered in mint, they had to be cleaned before we could do any more mopping.

Rachel Ogden / Foundry

Rachel Ogden / Foundry

Rachel Ogden / Foundry

Roborock’s Qrevo Slim navigated well for the most part – it avoided walls, table legs and doorways – but although its makers say it can recognise and react to up to 73 types of obstacles, we found it still bumped into a low stone hearth, sucked up and became clogged with a small scrap of paper, and swallowed a large feather from a cat toy.

One plus we noticed after it had been cleaning is that hair didn’t wrap around the brush rolls, which is a common problem with robot vac clogging.

The Qrevo Slim is particularly good at finding its way back to the dock. Having previously tested robot vacuums that have trundled round lost, we were impressed that no matter where we put the Qrevo Slim, it always found the dock quickly and directly.

Emptying into the dock’s bin was noisy – but not as loud as some – while the mop pad washing was unobtrusive. We liked that the robot can be instructed to stop drying the mop pads once they’re washed, too, meaning that you can save energy on days when they’d dry naturally.

Price and Availability

If you’re in Europe, you can already buy the Qrevo Slim. It has an MSRP of €1,299 but it’s currently available from Roborock’s German website and its French online shop for €999.

The Qrevo Slim is not yet available to buy in the UK and US. We’ll update this review once it has landed in stores.

If you’re looking to buy now, see our round-up of the best robot vacuums we’ve tested for our top recommendations, and our guide to the best cheap robot vacuums for the top budget buys.

Should you buy the Roborock Qrevo Slim?

Roborock’s Qrevo Slim delivers some useful advances in the world of mopping robot vacuums: it navigates more smoothly, doesn’t get stuck or lost, and allows cleaning options to be more easily customised. Plus, you get all the convenience of voice control without being tied to a smart speaker or device.

However, for all this tech, like most robot vacs, there’s still a gap between its performance on carpet and the abilities of a standard vacuum cleaner. While the mopping is good for everyday maintenance but not a substitute for a hard floor cleaner or a mop and bucket.

Essentially, the Qrevo Slim is a big timesaver for clean floors but don’t rehome your vacuum cleaner yet.