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Xiaomi Robot S12 review: 118 specs compared

Avg. price:~£160Max suction power:4000 PaRuntime:130 minDustbin capacity:300 mLMax threshold height:20 mm

Xiaomi Robot S12 Review: Compare 118 technical specifications and user reviews to see how this product ranks in the Robot Vacuums category and whether it is worth buying.

Xiaomi Robot S12
6.7/10

Overall score

Score
6.7/ 10
✕
What it is
An overall evaluation of the robot vacuum's quality, based on technical analyses and user reviews.
When it matters
When you need a quick reference to identify the best robot vacuums on the market.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 63% of models
Score components

80%

6.7

Technical score

20%

6.5

User score

â–¼Worse than 63% of robot vacuums
7.6

Value for money

Value for money
7.6/ 10
✕
What it is
An indicator that combines the robot vacuum's overall rating with its cost.
When it matters
When you are looking for a robot vacuum with a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 52% of models
Score components

70%

6.7

Overall score

30%

9.7

Price

â–¼Worse than 52%
6.7

Technical score

Technical score
6.7/ 10
✕
What it is
An assessment of robot-vacuum performance across cleaning, navigation, mopping, battery life, filtration, brush design, smart features, and dimensions.
When it matters
When you want to compare robot vacuums based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 58% of models
Score components

30%

6.2

Cleaning

23%

8.0

Navigation

18%

6.2

Mopping

12%

5.0

Battery

10%

8.4

Smart Features

7%

6.6

Design

â–¼Worse than 58%
6.5

User score

User score
6.5/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the robot vacuum
When it matters
When you want to know how a robot vacuum handles daily tasks and how reliable it remains over time according to user feedback.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 94% of models
Score components

70%

8.0

User ratings

30%

3.1

Number of reviews

Based on ratings from across the web.
â–¼Worse than 94%
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Where to buy
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Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Technical Specifications of robot vacuum Xiaomi Robot S12

Technical score
Technical score
6.7/ 10
✕
What it is
An assessment of robot-vacuum performance across cleaning, navigation, mopping, battery life, filtration, brush design, smart features, and dimensions.
When it matters
When you want to compare robot vacuums based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 58% of models
Score components:

30%

6.2

Cleaning

23%

8.0

Navigation

18%

6.2

Mopping

12%

5.0

Battery

10%

8.4

Smart Features

7%

6.6

Design

6.7
User score
User score
6.5/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the robot vacuum
When it matters
When you want to know how a robot vacuum handles daily tasks and how reliable it remains over time according to user feedback.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 94% of models
Score components

70%

8.0

User ratings

30%

3.1

Number of reviews

Based on ratings from across the web.
6.5
Popularity
Popularity
3.1/ 10
✕
What it is
An indicator based on the number of reviews received by the robot vacuum.
When it matters
When you prefer to purchase a product chosen and reviewed by many other consumers.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 68% of models
Popularity:
Xiaomi Robot S12 has a popularity index of 3.1, lower than that of 68.1% of robot vacuums and equal to that of 0.2% of robot vacuums.
3.1
Value for money
Value for money
7.6/ 10
✕
What it is
An indicator that combines the robot vacuum's overall rating with its cost.
When it matters
When you are looking for a robot vacuum with a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 52% of models
Score components:

70%

6.7

Overall score

30%

9.7

Price

7.6
Max suction power
4,000 Pa
Market range: <1.6k Pa – >12k Pa
This robot vacuum has a maximum suction pressure of 4,000 Pa, which is higher than 49.5% of robot vacuums and equal to 9.9% of robot vacuums.
N. of suction power levels
4
Market range: <2 – >4
This robot vacuum has 4 suction power levels, which is more than 49.7% of robot vacuums offer and the same number as 43.8% of robot vacuums offer.
Motor type
brushless
This robot vacuum uses a brushless motor, a type that is generally more efficient than those used by 2.7% of robot vacuums and also used by 97.3% of robot vacuums.
Power
?
Cleaning modes
3
Market range: <2 – >5
This robot vacuum offers 3 cleaning modes, which is fewer than 62% of robot vacuums offer and the same number as 27.7% of robot vacuums offer.
Show more
Mopping capability
yes
This robot vacuum can mop floors. 78.8% of robot vacuums offer this feature.
Mopping system type
static pad
This robot vacuum uses static pad for mopping. This system is more effective than those on 20.4% of robot vacuums and as effective as those on 46.3% of robot vacuums.
Mop pad type
semi-circular
Mop pad material
microfiber
Mop pressure
?
Show more
Primary navigation technology
LiDAR
This robot vacuum uses LiDAR as its primary navigation system, which is more capable than the systems in 34.7% of robot vacuums and matched by 60.4% of robot vacuums.
Mapping capability
yes
This robot vacuum maps the floor. 74% of robot vacuums offer this feature.
Real-time mapping
yes
This robot vacuum updates its map in real time. 68.5% of robot vacuums offer this feature.
Multiple map storage
yes
This robot vacuum stores multiple maps. 56.4% of robot vacuums offer this feature.
Map editing
yes
This robot vacuum lets you edit maps. 63.8% of robot vacuums offer this feature.
Show more
App control
yes
This robot vacuum supports app control. 5.5% of robot vacuums support app control.
App name
Xiaomi Home
Wi-Fi connectivity
yes
This robot vacuum supports Wi-Fi connectivity. 6.3% of robot vacuums support Wi-Fi connectivity.
Supported Wi-Fi bands
2.4 GHz
Bluetooth connectivity
no
This robot vacuum does not support Bluetooth connectivity. 64.7% of robot vacuums support Bluetooth connectivity.
Show more
Battery capacity
3,200 mAh
Market range: <2.4k mAh – >5.2k mAh
This robot vacuum has a battery capacity of 3,200 mAh, which is higher than 46.5% of robot vacuums and equal to 11.9% of robot vacuums.
Battery type
Li-ion
Battery voltage
14.8 V
Runtime
130 min
Market range: <90 min – >240 min
This robot vacuum runs for 130 min per charge, which is shorter than 55.5% of robot vacuums and equal to 2% of robot vacuums.
Recharge and resume
yes
This robot vacuum resumes cleaning after charging. 83.1% of robot vacuums offer this feature.
Show more
Shape
round
Height
94.5 mm
Width
350 mm
Length
350 mm
Weight
4.8 kg
Market range: <2.59 kg – >4.76 kg
This robot vacuum weighs 4.8 kg, making it heavier than 89.6% of robot vacuums and the same weight as 0.6% of robot vacuums.
Show more

Xiaomi Robot S12 vs the average robot vacuum

246810TotalBatteryDesignSmart FeaturesNavigationCleaningMopping
  • 0.97 % higher filter efficiency
    This robot vacuum has higher filter efficiency than the average robot vacuum (100 % vs 99 %). The average robot vacuum has a filter efficiency of 99 %.
    99.97 % vs 99 %
  • 1.5 W lower standby power consumption
    This robot vacuum draws less power in standby than the average robot vacuum (0.5 W vs 2 W). The average robot vacuum draws 2 W in standby.
    0.5 W vs 2 W
  • 5 dB quieter
    This robot vacuum has a lower reported cleaning noise level than the average robot vacuum (60 dB vs 65 dB). The average robot vacuum has a reported noise level of 65 dB.
    60 dB vs 65 dB
  • 12 mm wider main brush
    This robot vacuum has a wider main brush than the average robot vacuum (190 mm vs 178 mm). The average robot vacuum has a main brush 178 mm wide.
    190 mm vs 178 mm
  • 1.5 W lower standby power consumption
    This robot vacuum draws less power in standby than the average robot vacuum (0.5 W vs 2 W). The average robot vacuum draws 2 W in standby.
    0.5 W vs 2 W
  • 5 dB quieter
    This robot vacuum has a lower reported cleaning noise level than the average robot vacuum (60 dB vs 65 dB). The average robot vacuum has a reported noise level of 65 dB.
    60 dB vs 65 dB
  • 0.97 % higher filter efficiency
    This robot vacuum has higher filter efficiency than the average robot vacuum (100 % vs 99 %). The average robot vacuum has a filter efficiency of 99 %.
    99.97 % vs 99 %
  • 12 mm wider main brush
    This robot vacuum has a wider main brush than the average robot vacuum (190 mm vs 178 mm). The average robot vacuum has a main brush 178 mm wide.
    190 mm vs 178 mm
  • More basic obstacle avoidance
    This robot vacuum uses LiDAR for obstacle avoidance, while the average robot vacuum uses hybrid.
    LiDAR vs hybrid
  • Does not detect carpets automatically
    This robot vacuum does not detect carpets automatically, while the average robot vacuum detects carpets automatically.
  • No no-mop zones
    This robot vacuum does not support no-mop zones, while the average robot vacuum does. 53.1% of robot vacuums support this feature.
  • Does not boost suction automatically on carpets
    This robot vacuum does not boost suction automatically on carpets, while the average robot vacuum boosts suction on carpets automatically.
  • 1 fewer cleaning modes
    This robot vacuum offers fewer cleaning modes than the average robot vacuum (3 vs 4). The average robot vacuum offers 4 cleaning modes.
    3 vs 4
  • 34.5% heavier
    This robot vacuum is heavier than the average robot vacuum (4.8 kg vs 3.57 kg). The average robot vacuum weighs 3.57 kg.
    4.8 kg vs 3.57 kg
  • 100 mL smaller dustbin
    This robot vacuum has a smaller onboard dustbin than the average robot vacuum (300 mL vs 400 mL). The average robot vacuum has a dustbin capacity of 400 mL.
    300 mL vs 400 mL
  • 1.5 h longer charging time
    This robot vacuum takes longer to recharge fully than the average robot vacuum (6 h vs 4.5 h). The average robot vacuum takes 4.5 h.
    6 h vs 4.5 h
  • 22.2% lower user score
    User score
    6.5/ 10
    ✕
    What it is
    A rating that combines user reviews and the total number of reviews received by the robot vacuum
    When it matters
    When you want to know how a robot vacuum handles daily tasks and how reliable it remains over time according to user feedback.
    Score distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    Xiaomi Robot S12
    the average robot vacuum
    Xiaomi Robot S12 has a lower user score than the average robot vacuum (6.54 vs 8.000).
    6.54 vs 8
  • 2.07x less popular
    Xiaomi Robot S12 is less popular than the average robot vacuum (3.15 vs 6.5).
    3.15 vs 6.53
  • 1.5 h longer charging time
    This robot vacuum takes longer to recharge fully than the average robot vacuum (6 h vs 4.5 h). The average robot vacuum takes 4.5 h.
    6 h vs 4.5 h
  • 20 min shorter runtime
    This robot vacuum runs for less time per charge than the average robot vacuum (130 min vs 150 min). The average robot vacuum runs for 150 min.
    130 min vs 150 min
  • 30 m² smaller cleaning area
    This robot vacuum has a smaller maximum cleaning area than the average robot vacuum (150 m² vs 180 m²). The average robot vacuum has a maximum cleaning area of 180 m².
    150 m² vs 180 m²
  • 34.5% heavier
    This robot vacuum is heavier than the average robot vacuum (4.8 kg vs 3.57 kg). The average robot vacuum weighs 3.57 kg.
    4.8 kg vs 3.57 kg
  • No Bluetooth
    This robot vacuum does not support Bluetooth connectivity, while the average robot vacuum does. 64.6% of robot vacuums support Bluetooth connectivity.
  • More basic obstacle avoidance
    This robot vacuum uses LiDAR for obstacle avoidance, while the average robot vacuum uses hybrid.
    LiDAR vs hybrid
  • No no-mop zones
    This robot vacuum does not support no-mop zones, while the average robot vacuum does. 53.1% of robot vacuums support this feature.
  • Does not detect carpets automatically
    This robot vacuum does not detect carpets automatically, while the average robot vacuum detects carpets automatically.
  • Does not boost suction automatically on carpets
    This robot vacuum does not boost suction automatically on carpets, while the average robot vacuum boosts suction on carpets automatically.
  • 1 fewer cleaning modes
    This robot vacuum offers fewer cleaning modes than the average robot vacuum (3 vs 4). The average robot vacuum offers 4 cleaning modes.
    3 vs 4
  • 100 mL smaller dustbin
    This robot vacuum has a smaller onboard dustbin than the average robot vacuum (300 mL vs 400 mL). The average robot vacuum has a dustbin capacity of 400 mL.
    300 mL vs 400 mL
  • 70 mL less onboard water capacity
    This robot vacuum has a smaller onboard water tank than the average robot vacuum (170 mL vs 240 mL). The average robot vacuum's onboard water tank holds 240 mL.
    170 mL vs 240 mL

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Expert reviews

In-depth analysis and verdict from leading tech publications

P
phonandroid.com
22/06/2023
Summary of the review
Xiaomi Robot Vacuum S12 Review: A Well-Priced and Accomplished Robot Vacuum
(Translated)Show original
F
frandroid.com
24/06/2025
Summary of the review
Xiaomi Robot Vacuum S12 review: our full verdict
(Translated)Show original
T
test-achats.be
01/05/2023
Summary of the review
Xiaomi S12: full review, price, specifications - Testachats
(Translated)Show original
E
elespanol.com
22/05/2023
Summary of the review
We tested the new Xiaomi robot vacuum and mop that will make you retire your old Roomba
(Translated)Show original
T
topesdegama.com
19/03/2025
Summary of the review
Xiaomi Robot Vacuum S12 Review
(Translated)Show original
E
evosmart.it
26/05/2023
Summary of the review
Xiaomi Robot Vacuum S12 Review: A Best Buy at This Price?
(Translated)Show original
A
altroconsumo.it
N/A
Summary of the review
Xiaomi Vacuum S12 EU Robot Vacuum Review Archive
(Translated)Show original
C
consumentenbond.nl
01/05/2023
Summary of the review
Xiaomi Mi S12 - Test, Reviews & Prices - Consumentenbond
(Translated)Show original

Third-party reviews

Based on ratings from across the web.
Reviews last updated: July 2026 · How we calculate this

What customers like about Xiaomi Robot S12

  • Excellent value for money and a very capable entry-to-mid level robotic cleaner.
  • Strong suction power of $4000\text{ Pa}$ efficiently picks up dirt, pet hair, and debris on hard floors and low-pile carpets.
  • Smart LDS laser navigation ensures precise mapping, systematic cleaning patterns, and effective obstacle avoidance without bumping excessively.
  • Customizable app controls via the Mi Home app allow users to set up no-go zones, virtual walls, and targeted room cleaning.
  • Solid hybrid functionality with combined sweeping and mopping capabilities featuring adjustable water flow.

What customers don't like about Xiaomi Robot S12

  • Struggles with high-pile rugs and may occasionally get stuck on thick carpets or tangled in loose cables.
  • The mopping feature is better suited for daily maintenance and light refreshing rather than removing tough, dried-on stains.
  • Dustbin capacity is somewhat limited (typically around $0.3\text{ L}$), meaning it needs frequent emptying if you have a large home or heavy shedding pets.
  • Like many round robot vacuums, it struggles to reach deep into tight $90^{\circ}$ corners and along baseboards.
  • Requires regular maintenance, such as cleaning the main roller brush to prevent hair tangling and washing/replacing filters.

Verdict

The Xiaomi Robot Vacuum S12 is a mid-range, 2-in-1 sweeping and mopping device powered by a 45W brushless motor that delivers up to 4000 Pa of suction alongside a 3200 mAh battery providing a 130-minute runtime. Its defining characteristic is the 360-degree Laser Distance Sensor (LDS) navigation system paired with a 300 ml dustbin and an electronically controlled water tank that utilizes custom Y-shaped and zigzag paths to simulate manual mopping. Main advantages include precise multi-floor mapping, custom no-go zones via the Xiaomi Home app, integrated carpet detection, an allergy filter, and quiet 60 dB operation. However, notable drawbacks include its lack of a standby power-saving mode, occasionally buggy dock relocation when paused, a relatively small dust container, and limited effectiveness on thick, high-pile carpets.

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