Xiaomi Robot Vacuum X20 Max Review – Robot Vacuum with a Self-Empty & Self-Cleaning Mop Station

Yesterday, Xiaomi held a big product launch, during which they announced the new Xiaomi 14T Pro, the Xiaomi Watch 2, Smart Band 9, Buds 5, and the global availability of the MIX Flip.

They then also announced the flagship Robot Vacuum X20 Max and the X20 Pro, which builds upon the amazingly affordable Xiaomi X20+ features.

The X20 Max has many of the features you will find on robot vacuums at around the £800-1000 price point, yet Xiaomi has launched this robot for just €649.99, which works out at around £540.

This is my first time reviewing a robot vacuum with an all-in-one base station that automatically empties the dustbin, refills the mop, and cleans it. I am a complete convert. For anyone who has hard floors and those with mixed flooring (like me), then, I think this style of robot vacuum is a must buy.

Related Reviews

• Hoover HG4 Hydro Pro Robot Vacuum Review
• SwitchBot K10 Plus Pro
• Yeedi C12 Pro Plus Robot Vacuum Review
• Trifo Lucy Robot Vacuum Review
• Hobot Legee D8 Robot Vacuum and Mop Review
• Proscenic M9 Robot Vacuum Cleaner Review
• Yeedi Vac 2 Pro Review

Specification

Dimensions and Weight:

• Mainframe unit: 350 × 350 × 97mm
• Base station: 563 × 420 × 340mm
• Mainframe net weight: 3.9kg

Connectivity:

• Compatible with Android 9.0 and iOS 12.0 or above
• Wi-Fi IEEE 802.11 b/g/n 2.4GHz
• Bluetooth® 4.2

Battery and Charging:

• Battery capacity: 5200mAh
• Cleaning time: Up to 120 minutes
• Charging time: 6 hours
• Robot vacuum rated power: 55W

Performance:

• LDS laser navigation
• 3D obstacle avoidance
• Up to 8000Pa suction power
• Water tank capacity: 4L (fresh water) + 3.8L (dirty water)

Features

Robot Vacuum & Mop

• Extendable Mop Arm: The vacuum features an extendable mop design that can reach up to 40mm, allowing for 2mm-level edge cleaning. This enables the device to clean effectively around walls, corners, and furniture legs.
• Powerful Suction: With a fan blower capable of generating up to 8000Pa of suction power, the X20 Max can effectively remove deep-seated dust and debris.
• Advanced Navigation: The vacuum utilises both line laser and LDS laser navigation systems, enabling it to detect and navigate around obstacles with high precision.
• Smart Carpet Detection: An ultrasonic sensor allows the X20 Max to identify carpets and automatically lift its mop pad up to 10mm to avoid wetting them.
• Long Battery Life: Powered by a 5200mAh battery, the vacuum can operate continuously for up to 120 minutes, making it suitable for larger living spaces.

All-in-One Base Station

• High-Temperature Mop Washing: The base station can wash the mop pad with water heated up to 55°C, effectively removing stubborn stains.
• Hot Air Drying: After cleaning, the mop pad can be dried in as little as 3 hours, preventing mould and odours.
• Automatic Dust Collection: The base station features a 2.5L dust bag that can hold up to 75 days’ worth of debris, reducing the frequency of manual emptying.
• Large Water Tank: With a 4L fresh water tank, the X20 Max can clean up to 200m² without needing a refill.

Xiaomi Robot Vacuum X20 Max vs Xiaomi Robot Vacuum X20+

As you can see from the above specification, there is not a massive difference between the two robot vacuums, they both do essentially the same thing, but the Max model is more refined offering superior cleaning.

I live in a house with a mixture of hard floors and carpet, so the ultra-sonic carpet detection and 10mm mop lifting are particularly useful for me.

Additionally, the extendable mop is a great feature. In our kitchen, we inevitably get dirt and grime build up around the skirting boards which many robot vacuums struggle with.

Unboxing / Design

This is my first time reviewing a robot vacuum with an all-in-one station for emptying the dustbin and mop maintenance.

The size difference between this and regular robot vacuums with a dustbin empty station is striking. This is massive, and it needs two 4L containers for fresh and dirty water.

The all-in-one station has the dust bag behind the front textured panel, with the water containers being accessible from the lid.

The robot vacuum itself looks fairly typical; it is slightly larger than affordable options that don’t have the advanced mopping features, and it is massive compared to the SwitchBot K10 Plus Pro.

The two circular mops clip on easily and this is attached to a mechanical arm that can extend the mop out slightly getting into nooks and cranny’s.

One notable difference between this and affordable vacuums is the sensors on the side of the vacuum, which are combined with the front 120° wide-area structured light, plus the LDS sensor on top. This allows the X20 Max to have superior mapping and object avoidance.

One difference between this and the much more expensive options from the likes of Eufy is that the Eufy uses a roller mop, which is significantly better at cleaning up spillages. I demoed this at IFA, and the Eufy will clean up a liquid spillage in one go. It can also raise the mop inside the vacuum, providing 12mm of clearance vs 10mm. That being said, I think I’d live with slightly less efficient mopping for £600+ savings.

Set-Up

The setup process is simple, just like most smart home devices nowadays. The Xiaomi Mi Home is better than average, especially compared to lesser-known brands.

The app can use Bluetooth to identify the robot vacuum, so you only need to select add new device within the app, put it into pairing mode, select the device that shows up and provide the WiFi credentials. It will then pair and upgrade the robot.

Xiaomi Mi Home Settings

The Xiaomi Mi Home app is well-designed and user-friendly.

When you go into the device you can do the initial quick mapping which doesn’t take too long. Wit the map created you can edit it with restricted areas, selecting the floor material and marking up furniture. Oddly, there is only the option to select tile floor, floor, and other materials, though it automatically identifies carpet, so this feature isn’t that important.

From the home screen, you can manually start the robot cleaning and select the various cleaning options, such as which room and all the different modes.

Then, under the settings, you can view the cleaning history, set the DND period, schedule your cleanups, set dust collections, mopping and drying setting settings, and then all the vacuum settings.

One big advantage of Xiaomi over many competing brands is the entire Xiaomi ecosystem. I am not heavily invested in it, but any device using Mi Home can be automated. So you can create advanced controls for the vacuum. For example, in my account, I have the IMILAB EC6 security camera, in theory, I could set the vacuum to start when the camera has not detected a person for a long time.

Mapping

Like the majority of robot vacuums nowadays, Xiaomi uses a laser detection system (LDS), which is essentially the same as LIDAR. It then uses a 120° wide-area structured light and edge sensor to help it avoid low-level obstacles using wide-angle perception. In addition, it uses cliff sensors and sensors to detect the floor surface.

During my time with it, it completed the initial mapping very quickly and appeared to map the rooms accurately. It also mostly identified the rooms correctly. It split my front room in two but this makes sense as I have a large L shaped couch in the room so it does break seem to break the room into two.

You can then edit the maps with restricted areas and virtual walls, mark furniture, and set the floor material.

For most of my review, I left the map as is, and it cleaned my home without any problems. I try to keep my floors semi-clear (mainly of wires), and they haven’t needed to be rescued yet.

Cleaning Performance

Mopping

It is the mapping functionality I was most excited about with this vacuum. It is the first robot vacuum I have used with an all-in-one station, so I didn’t have to mess around with filling a small reservoir on the robot every time I wanted it to mop something.

Additionally, as I have a mixture of hard floors and carpets, I have struggled with some of the more affordable robot vacuums as they don’t always raise the mop, or don’t raise it very high.

Thanks to those features, the Xiaomi Robot Vacuum X20 Max is the first time I have been able to set up a robot vacuum for both mopping and vacuuming and then just let it do its thing without regular intervention.

For mopping, you have the option to mop the floor with cold, warm or hot water, which will alter the performance and power usage. With our kitchen being the largest room with a hard floor, I set the mop to use warm water as it is a room that gets grimy very easily.

The performance isn’t as good as physically mopping the floor yourself, but I find that aggressively mopping floors have a tendency to degrade materials like vinyl over time.

The mop on this is a much lighter touch and doesn’t soak the floor. As it mops my floor every day, I don’t get the same ingrained dirt that you get from less frequent mopping and I haven’t felt the need to use my Eureka RapidWash Wet Dry Vacuum Mop since getting the Xiaomi.

Vacuuming

This robot vacuum has a rated suction of 8000Pa, which puts it on the upper end of the spectrum for robot vacuums. Some options, like the Dreame L40 Ultra and X40 Ultra, have 11,000 Pa and 12,000Pa suction, but these cost considerably more.

It features a small side brush, which is similar to most robot vacuums nowadays; this helps it sweep in debris that builds up around kickboards. Again, some more expensive options like the Dreame L40 Ultra have now taking this one step further with an extendable side brush, but the basic side brush of the Xiaomi does a perfectly good job.

For most of my testing, I used the Xiaomi with its default settings with standard suction and the standard path option with whole house cleaning enabled.

I have been happy with the performance. I have checked on the dustbin near the end of a clean, and it collects an impressive amount of dust, and there is visibly less build-up of dust and debris in our kitchen.

I then did various synthetic tests, placing flour and rise on the floor, and the vacuum typically cleaned the debris up in one go.

Battery Life

The Robot Vacuum X20 has a 52000mAh battery, which Xiaomi claims can provide 120 minutes of cleaning.

Looking at my cleaning history, using the default cleaning settings, it was able to cover 50m² in 66 minutes. So, it should be able to handle a reasonably large house from one charge.

Of course, the cleaning settings will impact the battery life, but if you enable cleanup resumption, then the battery life doesn’t make much difference as the robot will return to charge and then complete the cleaning.

Additionally, the default setting has the mop being cleaned every 20m², so the robot will return to the base station semi-frequently regardless.

Self-Clean & Self-Empty Station

The Xiaomi Robot Vacuum X20 Max all-in-one base station is capable of high-temp auto mop pad washing, with customisable water temperatures up to 55°C, which helps it tackle stubborn stains, ensuring a pristine mop for every clean.

You have options to choose daily or deep mop washing modes via the Mi Home/Xiaomi Home App to suit different cleaning needs.

This upgraded station also features hot air drying in as fast as 3 hours, preventing mould and odours while maintaining a low-noise operation at ≤ 50db.

With automatic dust collection and a large 2.5L dust bag, Xiaomi claims this provides up to 75 days of hassle-free use. I have only had this a couple of weeks, so I can’t comment on the accuracy of this statement, but I do typically get a couple of months of dust collection from self-empty stations.

The 4L fresh water tank allows cleaning up to 200m² area without interruption. Again, I haven’t measured this precisely, but looking at my cleaning history since my last refill, it has done 100m² of cleaning, which includes both carpets and hard floor, and there appears to be more than 75% of the water left, and I would estimate that this matches the claims roughly.

Price and Alternative Options

The Xiaomi Robot Vacuum X20 Max has an RRP of Xiaomi Robot Vacuum X20 Max: Priced starting at €649.99 which works out at around £540.

Xiaomi also announced that the Robot Vacuum X20 Pro will be priced at €499.99 (£416).

The Xiaomi Robot Vacuum X20+ is available for £299.

For competing options that have both vacuum and mop empty/clean stations, you have:

• Eufy
  • Eufy Omni S1 Pro – £1300
  • Eufy X10 Pro Omni – £680
• Roborock
  • Roborock S8 MaxV Ultra: £1200
  • Roborock Qrevo Master Robot Vacuum Cleaner: £1000
  • Roborock Qrevo S Robot Vacuum – £520
  • Roborock S7 Max Ultra Robot Vacuum Cleaner: 650
• Dreame
  • Dreame X40 Ultra: £1300Dreame L40 Ultra: £1000Dreame L10s Pro Ultra: £800
  • Dreame L10s Ultra: £479
• Ecovacs
  • Deebot T30 Omni – £640
  • Deebot T20  Omni – £549
• EZVIZ RS20 Pro Robot Vacuum Cleaner – £600

There are obviously a lot of different price points with the above options, and the prices generally reflect the different features. Looking at the Dreame X40 Ultra vs the Dreame L40 Ultra, the X40 can be plumbed into your water supply, has an extendable side brush, and has higher suction.

Similarly, there are options at a similar price point and a couple that are more affordable. However, the Xiaomi Robot Vacuum X20 Max generally offers superior specs; for example, it has a higher suction power than both the Roborock Qrevo S and the Dreame L10s Ultra. The Dreame lacks the mop extending features and cleans the mop with cold, not hot water. Similarly, the Roborock lacks an extending mop and can only mop at room temperature.

Verdict

The Xiaomi Robot Vacuum X20 Max is an outstanding robot vacuum that brings flagship features to a mid-point price.

While there are some similarly priced or cheaper options, the Xiaomi has significantly higher suction power than those and superior mopping features.

If anything, the main issue the Xiaomi Robot Vacuum X20 Max has is the Robot Vacuum X20 Pro priced at around £416 and the Robot Vacuum X20+ at £300. They both feature premium features like automatic mop washing at an incredible price point.

I think the Xiaomi Mi Home ecosystem is also a selling point; while I am not heavily invested in it, they have a wide range of products and managing everything within one app is much preferable to different apps per smart device. Xiaomi also has excellent automation options you can set up.

Overall, if you want a robot vacuum that features an all-in-one base station then I think the Xiaomi Robot Vacuum X20 series provides the best bang for your buck on the market, and the X20 Max has almost every premium feature you could want but at a price point that’s half of some of the options from competing brands.

James Smythe( Editor-in-chief )

I am James, a UK-based tech enthusiast and the Editor and Owner of Mighty Gadget, which I’ve proudly run since 2007. Passionate about all things technology, my expertise spans from computers and networking to mobile, wearables, and smart home devices.

As a fitness fanatic who loves running and cycling, I also have a keen interest in fitness-related technology, and I take every opportunity to cover this niche on my blog. My diverse interests allow me to bring a unique perspective to tech blogging, merging lifestyle, fitness, and the latest tech trends.

In my academic pursuits, I earned a BSc in Information Systems Design from UCLAN, before advancing my learning with a Master’s Degree in Computing. This advanced study also included Cisco CCNA accreditation, further demonstrating my commitment to understanding and staying ahead of the technology curve.

I’m proud to share that Vuelio has consistently ranked Mighty Gadget as one of the top technology blogs in the UK. With my dedication to technology and drive to share my insights, I aim to continue providing my readers with engaging and informative content.