Buying guide
Xiaomi robot vacuums compared: 5, X20, S40 and H40
Chosen from what the Amazon listings state, not tested by us. How we pick
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Top picks at a glance
Compare them allBest overall
Xiaomi H40: compact base with a 4 L bag, 90 days
Compact 32.6 cm base is 59% smaller than the previous generation, according to Xiaomi.
Check price on AmazonAffiliate linkBest value
Xiaomi 5: 20,000 Pa with scraper-cleaned washboard
The Item Highlight lists 80°C hot water washing at the base station.
Check price on AmazonAffiliate linkMost features
Xiaomi 5 Pro: 20,000 Pa, 80°C wash, AI camera
dToF retractable radar lowers in tight spaces, reaching areas as low as 9.5 cm, according to Xiaomi.
Check price on AmazonAffiliate link
Xiaomi's UK range is easier to follow once you group it. The numbered Xiaomi 5 and 5 Pro sit at the top, with 20,000 Pa suction, a radar that lowers to fit under furniture and docks that wash mops in 80°C water. The X20 models are the middle step: a dock that empties dust, washes the pads and dries them, with lower suction. The S40 Pro is a mopping robot without a self-emptying dock, and the H40 is a vacuum with a compact self-empty base and a large 4 L bag. The choice comes down to how much you want the dock to do, how hot the mop wash should be, and whether your furniture sits low. This guide compares six models on suction, dock jobs, mop design, navigation and runtime.
All products compared
- Xiaomi H40: compact base with a 4 L bag, 90 days
- Suction
- 10,000 Pa
- Dock
- Self-empty into 4 L bag, up to 90 days
- Mop
- Mop pad and water tank
- Navigation
- LDS laser, 360° scanning
Check price on AmazonAffiliate link - Xiaomi 5: 20,000 Pa with scraper-cleaned washboard
- Suction
- 20,000 Pa
- Dock
- Dust collection, 80°C mop wash, scraper cleaning
- Mop
- Extendable mop pad
- Navigation
- Retractable dToF radar
Check price on AmazonAffiliate link - Xiaomi X20 Pro: hot-air drying and 160 minute runtime
- Suction
- 7,000 Pa
- Dock
- 75-day dust, pad wash, hot-air drying, 4 L tank
- Mop
- Dual pads, 10 mm lift
- Navigation
- 120° structured light and edge sensor
Check price on AmazonAffiliate link - Xiaomi X20+: 180 rpm pressure pads and 75-day base
- Suction
- 6,000 Pa
- Dock
- 75-day dust, pad cleaning, air drying, 4 L tank
- Mop
- Dual rotating pads, 180 rpm, lifting
- Navigation
- S-Cross structured light
Check price on AmazonAffiliate link - Xiaomi S40 Pro: dual extending arms, no wash dock
- Suction
- 15,000 Pa
- Dock
- Charging dock (no self-empty stated)
- Mop
- Extending mop, 10 mm lift
- Navigation
- LiDAR, wide-angle obstacle avoidance
Check price on AmazonAffiliate link - Xiaomi 5 Pro: 20,000 Pa, 80°C wash, AI camera
- Suction
- 20,000 Pa
- Dock
- Dust collection, 80°C mop wash, drying, self-clean
- Mop
- Extendable mop pads
- Navigation
- Retractable dToF radar, AI camera
Check price on AmazonAffiliate link
| Product | Suction | Dock | Mop | Navigation | Link |
|---|---|---|---|---|---|
| Xiaomi H40: compact base with a 4 L bag, 90 days | 10,000 Pa | Self-empty into 4 L bag, up to 90 days | Mop pad and water tank | LDS laser, 360° scanning | Check price on AmazonAffiliate link |
| Xiaomi 5: 20,000 Pa with scraper-cleaned washboard | 20,000 Pa | Dust collection, 80°C mop wash, scraper cleaning | Extendable mop pad | Retractable dToF radar | Check price on AmazonAffiliate link |
| Xiaomi X20 Pro: hot-air drying and 160 minute runtime | 7,000 Pa | 75-day dust, pad wash, hot-air drying, 4 L tank | Dual pads, 10 mm lift | 120° structured light and edge sensor | Check price on AmazonAffiliate link |
| Xiaomi X20+: 180 rpm pressure pads and 75-day base | 6,000 Pa | 75-day dust, pad cleaning, air drying, 4 L tank | Dual rotating pads, 180 rpm, lifting | S-Cross structured light | Check price on AmazonAffiliate link |
| Xiaomi S40 Pro: dual extending arms, no wash dock | 15,000 Pa | Charging dock (no self-empty stated) | Extending mop, 10 mm lift | LiDAR, wide-angle obstacle avoidance | Check price on AmazonAffiliate link |
| Xiaomi 5 Pro: 20,000 Pa, 80°C wash, AI camera | 20,000 Pa | Dust collection, 80°C mop wash, drying, self-clean | Extendable mop pads | Retractable dToF radar, AI camera | Check price on AmazonAffiliate link |
Details as stated in the Amazon listing or by the manufacturer. See the current price on Amazon.
The products in detail
No. 1 · Xiaomi
Xiaomi H40: compact base with a 4 L bag, 90 days
Xiaomi shrank the base to a compact 32.6 cm, which it says is 59% smaller than the previous generation, while the 4 L bag lasts up to 90 days. A tidy fit for a hallway or under a desk.
In its favour
- Compact 32.6 cm base is 59% smaller than the previous generation, according to Xiaomi.
- 4 L bag lasts up to 90 days, so emptying is rare.
- 10,000 Pa suction and a five-step anti-tangle system aimed at long-haired pets.
Good to know
- Runtime of 100 minutes is the shortest listed here, though enough for many flats.
- Mopping is a basic pad and tank; the base does not wash or dry it.
Listing title: XIAOMI H40 Robot Vacuum Cleaner with Self Empty Station, 10000 Pa Suct...
No. 2 · Xiaomi
Xiaomi 5: 20,000 Pa with scraper-cleaned washboard
The same 80°C wash as the 5 Pro, plus dual rotating scrapers that clean the washboard during each wash. A fit for buyers who want the hot wash without the camera.
In its favour
- The Item Highlight lists 80°C hot water washing at the base station.
- Dual rotating scrapers clean the washboard while the mop is washed, so the tray needs less attention.
- Retractable dToF radar lets it get under furniture as low as 9.5 cm.
Good to know
- The listing does not mention mop drying.
- There is no AI camera, so obstacle recognition is less detailed than on the 5 Pro.
Listing title: XIAOMI 5 Robot Vacumm Cleaner with Mop, 20000 Pa, Lifting dToF Navigat...
No. 3 · Xiaomi
Xiaomi X20 Pro: hot-air drying and 160 minute runtime
A mopping robot with a named Silent suction speed in the app and a dock that empties dust for 75 days and dries the mops. For quiet daily runs on hard floors.
In its favour
- The app offers four suction speeds, starting with Silent, then Standard, Strong and Turbo.
- The dock washes and hot-air dries the mops and empties dust every 75 days.
- Runs up to 160 minutes in Standard mode on its 5,200 mAh battery.
Good to know
- No decibel figure is given for any mode.
- How loud the dock is while emptying is not stated.
Listing title: XIAOMI X20 Pro Robot Vacumm Cleaner with Mop Function, 7000 Pa Suction
No. 4 · Xiaomi
Xiaomi X20+: 180 rpm pressure pads and 75-day base
A lower-powered UK model with lifting dual pads at 180 RPM, automatic pad cleaning and air drying, and a 4 L clean water tank. It suits flats with laminate or tile where mopping matters more than heavy carpet work.
In its favour
- Dual pads rotate at 180 RPM with pressure to lift coffee stains and kitchen spills.
- Station auto-cleans the pads, air-dries them and empties dust in about 10 seconds.
- 4 L clean water tank and up to 75 days hands-free, with a UK model number on the listing.
Good to know
- Mop lift height and water-flow settings are not stated in the listing.
- 6,000 Pa is the lowest suction in this guide, so it is better suited to hard floors than carpets.
Listing title: XIAOMI X20+ Robot Vacuum Cleaner with Mop Function and Lifting Mop, 60...
No. 5 · Xiaomi
Xiaomi S40 Pro: dual extending arms, no wash dock
A lighter option without a washing dock: the mop extends to 1 mm from walls and lifts 10 mm over carpet. Suits laminate homes happy to rinse the pad by hand.
In its favour
- Ultrasonic sensors detect carpet, lift the mop 10 mm and boost suction.
- The mop and side brushes extend to within 1 mm of walls for skirting board edges.
- Cleans up to 180 m² per charge on its 5,200 mAh battery, according to the listing.
Good to know
- No mop washing or drying dock is listed, so the pad needs rinsing by hand.
- Water control is not described, only a 310 ml tank.
Listing title: XIAOMI S40 Pro Robot Vacumm Cleaner with Mop, 15000Pa, Dual Extendable...
No. 6 · Xiaomi
Xiaomi 5 Pro: 20,000 Pa, 80°C wash, AI camera
Xiaomi's dToF radar rises in open rooms and lowers in tight spaces, letting the robot reach areas as low as 9.5 cm. Suits furniture with a gap a little over 9.5 cm rather than true low sofas.
In its favour
- dToF retractable radar lowers in tight spaces, reaching areas as low as 9.5 cm, according to Xiaomi.
- Extendable mop and side brush reach edges and corners under furniture.
- 20,000 Pa suction and AI recognition of over 200 objects, including cables and socks.
Good to know
- At 9.5 cm with the radar down it is taller than every other robot in this guide.
- The listing does not give a threshold climbing height.
Listing title: XIAOMI 5 Pro Robot Vacumm Cleaner with Mop, 20000 Pa, AI Obstacle Avoi...
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