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Xiaomi Robot Vacuum 5

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★ 4.5 (1179 reviews)

Average shopper rating from online retailer listings (Google Shopping).

From £249.99 to £891.63

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Our verdict

With 20,000Pa suction, a washable HEPA filter and mopping built in, this is a strong all-rounder for multi-surface homes that want one robot to handle carpet, hard floor and tile. It drops the camera-based obstacle recognition of the pricier Pro model, so households with cluttered floors, cables or pets prone to leaving surprises underfoot may be better served by stepping up to that version instead.

Specifications

TypeRobot Vacuum
Power sourceCordless (Battery)
Battery voltage14.4V
Weight3.75kg
Noise level54dB
Runtime140 min
Battery capacity5.2Ah
Warranty2 years
ColourWhite
BaglessNo
HEPA filterYes
Washable filterYes
App-controlledYes
Self-emptying dockYes
2-in-1 mop & vacuumYes
Wet & dry capableYes
Surface compatibilitycarpet, hard-floor, tile
Best forcarpet, hardwood-floors, tile-floors, multi-surface, allergies

Quick verdict

The Xiaomi Robot Vacuum 5 (model OV31GL) is a self-emptying, mopping robot vacuum from Xiaomi's mid-range line-up. It's distinguished from the pricier Robot Vacuum 5 Pro by using S-Cross structured-light obstacle avoidance rather than the Pro's triple-camera AI object recognition, while sharing the same core suction, battery and dock specification. Based on verified spec data, it suits households wanting strong suction, hot-water mopping and hands-off dust disposal on carpet, hard floor and tile, without paying for camera-based object recognition.

Key specifications

SpecDetail
Max sealed suction20,000Pa (20kPa)
Battery5,200mAh Li-ion, 14.4V
RuntimeUp to 140 minutes
Charge time6 hours (360 minutes)
FiltrationHEPA, washable
Weight3.75kg (robot unit only, excludes dock)
Dimensions350mm diameter x 88mm height
Noise level54dB
Warranty2 years
ColourWhite

Suction power and everyday cleaning

Xiaomi lists 20,000Pa of maximum sealed suction for the Robot Vacuum 5 — figures are only published in pascals, not in individual wattage modes. Navigation uses a dToF retractable radar tower combined with S-Cross obstacle avoidance, plus carpet detection and automatic lifting when the robot moves onto rugs. An anti-tangle brush system is included to reduce hair wrap-up. The listed surface compatibility covers carpet, hard floor and tile, so it's aimed at mixed-flooring homes rather than a single surface type.

Battery life and charging

The 5,200mAh battery gives a maximum runtime of 140 minutes per charge (no minimum runtime figure is published), and a full recharge takes around 6 hours. Multi-floor mapping is supported via the Mi Home app, with Google Assistant and Alexa compatibility for voice control.

Filtration and allergies

The onboard filter is HEPA-rated and washable, which is relevant for households managing dust or pet allergies. Replacement HEPA filters are sold as an accessory.

Self-emptying dock and mopping

The robot empties itself into an auto-empty dock fitted with a 2.5-litre disposable dust bag; the robot's own onboard bin capacity isn't separately published, so it can't be stated as a fact here. For mopping, the dock performs a hot-water pad wash at up to 80°C followed by roughly 2 hours of hot-air drying, and the system draws from 4-litre water tanks. Mop pads and spare dust bags are included as accessories.

Design, weight and noise

The robot itself weighs 3.75kg and measures 350mm across by 88mm high, with a retractable laser tower that drops to 9.5cm when lowered for cleaning under low furniture. Xiaomi lists a noise level of 54dB.

Price and warranty in the UK

This model is priced at £486.48 via SmartOnly.eu. UK retailer listings seen during research ranged from roughly £342.99 to £503.57 — as with any price on this site, confirm the current figure with the retailer before buying. The vacuum carries a 2-year manufacturer warranty.

Should you buy it?

This model fits buyers who want a self-emptying, mopping robot vacuum with strong suction and don't need camera-based object recognition. If AI-driven object avoidance matters more than price, the Robot Vacuum 5 Pro or other Xiaomi vacuum cleaners are worth comparing. If you'd rather weigh this model against other brands on the same spec points, browse other robot vacuums.

How much suction does the Xiaomi Robot Vacuum 5 have?

Xiaomi rates it at 20,000Pa maximum sealed suction, with individual suction mode wattages not published separately. That figure matches the pricier Robot Vacuum 5 Pro exactly, since both models share the same core suction, battery and dock specification — the Pro's extra cost comes from its triple-camera AI object recognition rather than stronger cleaning power. Navigation uses a dToF retractable radar tower alongside S-Cross structured-light obstacle avoidance, with automatic carpet detection that lifts the mop pad when the robot moves onto rugs. An anti-tangle brush system reduces hair wrap-up during use. Combined with a washable HEPA filter and listed compatibility across carpet, hard floor and tile, the 20,000Pa rating supports genuinely mixed-flooring cleaning rather than being a spec-sheet number alone.

Does the Xiaomi Robot Vacuum 5 empty itself?

Yes. It uses an auto-empty dock fitted with a 2.5-litre disposable dust bag, so the robot's own onboard bin (whose exact capacity Xiaomi hasn't separately published) doesn't need manual clearing after every run. The same dock also performs a hot-water mop-pad wash at up to 80°C, followed by roughly two hours of hot-air drying, drawing on 4-litre water tanks, so mopping maintenance is handled alongside dust disposal. Mop pads and spare dust bags are included as accessories for this cycle. This level of hands-off maintenance is one of the features shared identically with the pricier Robot Vacuum 5 Pro, since both models use the same dock hardware and only differ on the robot's obstacle-avoidance system.

How long does the battery last?

Up to 140 minutes per charge, based on the manufacturer's maximum runtime figure from a 5,200mAh, 14.4V lithium-ion battery, with a full recharge taking about 6 hours. No minimum runtime figure is published, so actual time between charges will vary with suction mode and how much mopping the 140-minute session includes. At 3.75kg, the robot itself is light for the runtime it offers, and because the auto-empty dock handles dust disposal and mop-pad washing between cycles, that 6-hour charge window doesn't require any manual maintenance step before the robot heads back out to clean carpet, hard floor or tile again.

What's the difference between the Robot Vacuum 5 and the Robot Vacuum 5 Pro?

Both share the same core suction, battery and dock specification — 20,000Pa max suction, the same 5,200mAh battery, 140-minute runtime and hot-water mopping dock. The standard Robot Vacuum 5 uses S-Cross structured-light obstacle avoidance, while the 5 Pro adds a triple-camera system with AI object recognition for spotting items like cables or pet mess before driving over them. That extra recognition hardware is the main reason the Pro carries a higher price than this model's £342.99-£503.57 UK range. Both use the same washable HEPA filter and 2-year warranty, so buyers choosing between them are really deciding whether camera-based obstacle avoidance is worth paying more for, rather than comparing raw suction or battery life.

Is the Xiaomi Robot Vacuum 5 suitable for allergy sufferers?

It has a washable HEPA filter, which is a relevant feature for managing household dust and allergens, though this isn't a guarantee of allergy relief. The filter works alongside 20,000Pa of maximum sealed suction and listed compatibility across carpet, hard floor and tile, so allergen pickup isn't limited to a single surface type. Replacement HEPA filters are sold as an accessory, meaning the washable filter can also be swapped for a fresh one if washing alone doesn't restore performance over time. The auto-empty dock further reduces allergen exposure day-to-day, since collected dust goes straight into a sealed 2.5-litre disposable bag rather than requiring you to empty an onboard bin by hand after each clean.

How much does the Xiaomi Robot Vacuum 5 cost in the UK?

Pricing seen from UK retailers ranged from roughly £342.99 to £503.57 at the time of research; check current retailer listings for up-to-date pricing, as this wasn't independently verified. One tracked listing via SmartOnly.eu put it at £486.48, within that broader range. At the lower end of that spread, this model undercuts the Robot Vacuum 5 Pro noticeably while still offering the same 20,000Pa suction, 5,200mAh battery, 140-minute runtime, washable HEPA filter and self-emptying, mopping dock — the Pro's extra cost buys camera-based obstacle avoidance rather than any difference in cleaning specification. A 2-year manufacturer warranty applies regardless of which retailer or price point you buy at.

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★ ratings are average shopper ratings from online retailer listings.