Robot Vacuum X20 Max
2 independent reviewsRead the findings →Xiaomi's step up from the X20+, with an extending mop and a big washing dock. It suits homes with lots of carpet, which it cleans well. But it mops very wet, and some owners' docks have had drain-pump failures.
Updated
See the alternatives below, or switch market.
Where it sits in Xiaomi’s range
Feedback
What reviewers found
Two proper tests: TechRadar lived with it for about a year, and Vacuum Wars bought one and ran it through their lab. Both found it handles everyday dirt well, and they agree the mapping is good. They split on mopping: TechRadar got stains up with extra passes, while Vacuum Wars measured one of the wettest results it has recorded. Both raise the same warning about the dock's dirty-water pump, which is the thing to weigh most.
TechRadar, hands-on, About a year at home, Aug 2026 · Vacuum Wars, lab test, Jul 2025
Hard floors
Not enough evidenceOnly TechRadar judged hard floors: oats, crumbs and flour on a kitchen floor came up on the most intensive setting, with a few bits left in the corners. No other review we use has tested hard floors yet.
Carpet and rugs
Not enough evidenceOnly Vacuum Wars measured carpet pickup, and it pulled almost all the embedded sand out of medium-pile carpet, one of its best results. No other review we use has tested carpet yet.
Pet hair
Not enough evidenceOnly Vacuum Wars tested hair: flattened pet-hair pickup was ordinary, and most long hair wrapped round the brush despite the cutting comb. No other review we use has checked it yet.
Mopping
Mixed resultsTechRadar saw ketchup smeared at first but gone after a few runs, with a little left in the grout. Vacuum Wars scored it well on dried stains but found it left more than three times the usual water behind, so watch wooden floors.
Navigation and obstacles
Mixed resultsMapping is the strong point: TechRadar found the map spot on over a year, and Vacuum Wars saw it cover its floor plan much faster than average. But Vacuum Wars found obstacle avoidance slightly below average, and TechRadar saw it bump objects before steering round.
Dock and upkeep
Mixed resultsTechRadar liked the big tanks, hot-water pad wash and removable tray, but after a year its dock sometimes failed to drain and overflowed. Vacuum Wars found owners reporting the same pump fault, though only a handful.
App and software
Reviewers rate it highlyTechRadar found the Xiaomi Home app easy, full-featured and bug-free over a year of use, and Vacuum Wars rated it decent, with room settings, zone cleaning and no-mop zones.
Noise
Not enough evidenceOnly TechRadar commented on noise: pad drying sounds like a desk fan, and the loud voice announcements need switching off in the app. No review we use has measured it.
Reliability and support
Reviewers found problemsTechRadar's unit developed a dock drainage fault after a year, and a family member's needed repair within months. Vacuum Wars found owners describing the same pump failure and advises weighing it before buying.
Value
Mixed resultsTechRadar found it solid value in the UK, especially on sale, but poor value at US prices. Vacuum Wars thinks other robot and mop combos do more for the same money.
Verdicts come from independent, hands-on, finished reviews. An area needs at least two of them before we say more than “Not enough evidence”. We don't score robots ourselves. How this works
Strong on carpet, average on hair
Vacuum Wars pulled 91% of embedded sand out of medium-pile carpet, well above its test average. Pet-hair pickup was about average. In a kitchen, TechRadar saw it collect oats, crumbs and flour, leaving some debris in the corners. That sand result is for medium pile, so don't read it as a promise for every thick carpet.
The drain pump is the worry
TechRadar’s unit developed an intermittent drain-pump fault after about a year, and dirty water overflowed. The reviewer’s family member had a similar fault on their unit, which Xiaomi repaired, and Vacuum Wars found some similar owner reports. The reports don’t show how common it is or how quickly claims get sorted, so check the seller’s warranty and repair process before you buy.
Mopping: clean, but very wet
TechRadar got most of a ketchup smear up after several runs, with a bit left in the grout. Vacuum Wars measured strong stain removal but more than three times its average amount of water left on the floor. That matters on wood and other floors that don't like moisture. Follow your flooring maker’s cleaning advice, because a lower water setting doesn't prove it's safe.
Good maps, but misses some obstacles
TechRadar found the map spot on, room boundaries respected and the dock found every time, even from the far end of an L-shaped hallway. Vacuum Wars timed it finishing their floor plan in 36 minutes against a 60-minute average. Obstacle avoidance was a little below average there, with 15 of 24 objects avoided, so pick up socks, toys and cables before it runs. Vacuum Wars also found 60% of long hair wrapped round the brush, despite the hair-cutting blade.
A big dock that chatters
The dock is tall and deep, and TechRadar warns it may not suit a small home. In return it holds 4 litres of clean water, so refills were rare in their test, and the tray the robot parks on comes out for cleaning. The pads take a few hours to dry, with a noise TechRadar compared to a desk fan. The robot also announces what it's doing in a loud voice by default, which you can switch off in the app.
This covers the X20 Max only. The X20+ and X20 Pro are different robots with their own pages.
Our take
Should you buy the Robot Vacuum X20 Max?
Best for: Homes with both hard floors and carpets. Skip it if: Dried kitchen stains are your main cleaning problem.
buy it if you have a lot of carpet, want the dock to handle the mop chores, and can buy from a seller that will sort a repair quickly. If mopping is the main job, the MOVA P10 Pro Ultra and Roborock Qrevo S are better-tested choices for hard floors.
The X20 Max sits above the cheaper X20+ in Xiaomi's range. It has more suction on paper, a mop pad that swings out on an arm to reach wall edges, and a dock that washes the pads in hot water and dries them with warm air. The robot is a standard height, so it won't get under unusually low sofas, and the dock is tall and deep, so measure the spot first.
Carpet is its strength. Vacuum Wars measured 91% of sand pulled out of medium-pile carpet, one of its best results ever, though flattened pet hair came up at an ordinary rate and most long hair wrapped round the brush. On mopping, TechRadar got ketchup up after a few runs, while Vacuum Wars scored it well on dried stains but found it left more than three times the usual water behind, so watch wooden floors. TechRadar found the map spot on over a year of use, and Vacuum Wars saw it cover its floor plan much faster than average but dodge obstacles slightly worse. The drain pump is the real worry. After about a year, TechRadar's dock sometimes failed to suck out the dirty water and overflowed onto the floor, a family member's unit developed a similar fault within months, and Vacuum Wars found owners describing the same failure.
Before you buy
The questions people ask about this one
How common is the dock drainage fault?
Nobody knows. TechRadar described two affected units, and Vacuum Wars found a small number of similar owner reports. Before buying, check who handles warranty claims and how repairs or replacements are arranged. A big retailer’s name on the box won't tell you how quickly a fault gets fixed.
Will it avoid cables and pet mess?
Not reliably. Vacuum Wars recorded 15 of 24 test objects avoided, a little below average, and TechRadar saw it bump into things before working round them. Tidy up before a run, especially cables and anything a pet might leave behind.
Does it fit under low furniture?
It's 9.7cm tall including the laser turret on top, according to the specifications. That's normal for a robot like this and fits under most beds and sofas, but not very low ones. Measure the gap before you buy.
How does it handle rugs?
It detects carpet and lifts the mop pads by up to 10mm, per the specifications, and TechRadar saw the pads rise on a rug in the middle of a mopping run. Xiaomi suggests setting thicker, shaggy or fringed rugs to be avoided in the app, per Xiaomi.
How big is the dock, and is it loud?
It measures 34cm wide, 42cm deep and 56.3cm tall, per the specifications, so it needs a proper spot. TechRadar found the drying noise about as loud as a desk fan, and the robot's voice announcements loud until switched off.
Does it need an account?
Yes. It runs through the Xiaomi Home app, and TechRadar notes you have to set up a Mi account. The app itself was quick and bug-free over a year of use, with schedules, room selection and suction and water settings.
Alternatives
Other robot vacuums to compare.
P10 Pro Ultra
Why consider it: Good hard-floor cleaning, handles obstacles well and has a well-automated dock.
The compromise: Tests found it weak on pet hair in carpet and along edges.
Qrevo S
Why consider it: Strong on hard floors, with a dock that washes and dries the mops.
The compromise: It struggles with carpet hair and small objects, so it needs fairly clear floors.
X10 Pro Omni
Why consider it: A full-service dock and detailed controls; TechRadar compares it directly with the X20 Max.
The compromise: Reviewers and owners disagree sharply about how well it actually cleans.
Specs
Full specifications
Each specification names its source. Manufacturer claims are not independent test results; unconfirmed figures are labelled.
Owner reviews
Do you own the Robot Vacuum X20 Max?
Tell people how it’s held up: cleaning, maintenance, faults and support. Owner accounts are shown separately from independent reviews.
Sources
Where this page’s findings come from
Editorial reviews
- TechRadar: Xiaomi Robot Vacuum X20 Max review ↗3 / 5Hands-on, About a year at home
- Vacuum Wars: Xiaomi X20 Max Robot Vacuum Review: Impressive Carpet Cleaning, Lacking Elsewhere ↗Lab test
Sources
Videos
- Lim Reviews: Xiaomi X20 Max: The Most Affordable All-in-one Robot Vacuum & Mop | RM2499 🔥 ↗
- Lavelab EN: Xiaomi X20 Max : HONEST Review and Test ↗
- Search YouTube for Xiaomi Robot Vacuum X20 Max ↗Search results may include company demonstrations or similar models. Check the source and model name; a demonstration is not an independent performance test.