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Xiaomi S20 review: 118 specs compared

Avg. price:~£150Max suction power:5000 PaRuntime:120 minDustbin capacity:400 mLMax threshold height:20 mm

Xiaomi S20 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.

7.1/10

Overall score

Score
7.1/ 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 53% of models
Score components

80%

7.1

Technical score

20%

?

User score

â–¼Worse than 53% of robot vacuums
7.9

Value for money

Value for money
7.9/ 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–² Better than 66% of models
Score components

70%

7.1

Overall score

30%

9.7

Price

â–²Better than 66%
7.1

Technical score

Technical score
7.1/ 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–² Better than 51% of models
Score components

30%

6.8

Cleaning

23%

8.4

Navigation

18%

6.3

Mopping

12%

4.9

Battery

10%

8.9

Smart Features

7%

7.1

Design

â–²Better than 51%
?

User score

User score
8.0/ 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 62% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

  • No image
No image
Where to buy
    N/A~ £150
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 S20

Technical score
Technical score
7.1/ 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–² Better than 51% of models
Score components:

30%

6.8

Cleaning

23%

8.4

Navigation

18%

6.3

Mopping

12%

4.9

Battery

10%

8.9

Smart Features

7%

7.1

Design

7.1
User score
User score
8.0/ 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 62% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

?
Popularity
Popularity
1.0/ 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 99% of models
Popularity:
Xiaomi S20 has a popularity index of 1, lower than that of 70.7% of robot vacuums and equal to that of 29.3% of robot vacuums.
1.0
Value for money
Value for money
7.9/ 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–² Better than 66% of models
Score components:

70%

7.1

Overall score

30%

9.7

Price

7.9
Max suction power
5,000 Pa
Market range: <1.6k Pa – >12k Pa
This robot vacuum has a maximum suction pressure of 5,000 Pa, which is higher than 63.5% of robot vacuums and equal to 6.8% of robot vacuums.
N. of suction power levels
3
Market range: <2 – >4
This robot vacuum has 3 suction power levels, which is fewer than 50.5% of robot vacuums offer and the same number as 35.5% 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
?
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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.
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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
yes
This robot vacuum supports Bluetooth connectivity. 35.5% of robot vacuums support Bluetooth connectivity.
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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
14.4 V
Runtime
120 min
Market range: <90 min – >240 min
This robot vacuum runs for 120 min per charge, which is shorter than 57.6% of robot vacuums and equal to 19.8% of robot vacuums.
Recharge and resume
yes
This robot vacuum resumes cleaning after charging. 83.1% of robot vacuums offer this feature.
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Shape
round
Height
98 mm
Width
325 mm
Length
325 mm
Weight
3.5 kg
Market range: <2.59 kg – >4.76 kg
This robot vacuum weighs 3.5 kg, making it lighter than 52.3% of robot vacuums and the same weight as 2.9% of robot vacuums.
Show more

Xiaomi S20 vs the average robot vacuum

246810TotalBatteryDesignSmart FeaturesNavigationCleaningMopping
  • 22 mm wider main brush
    This robot vacuum has a wider main brush than the average robot vacuum (200 mm vs 178 mm). The average robot vacuum has a main brush 178 mm wide.
    200 mm vs 178 mm
  • 1,000 Pa stronger maximum suction
    This robot vacuum has stronger maximum suction than the average robot vacuum (5,000 Pa vs 4,000 Pa). The average robot vacuum has a maximum suction pressure of 4,000 Pa.
    5,000 Pa vs 4,000 Pa
  • Has a child lock
    This robot vacuum has a child lock, while the average robot vacuum does not. 44.9% of robot vacuums offer this.
  • 13 more languages supported
    This robot vacuum supports more languages than the average robot vacuum (30 vs 17). The average robot vacuum supports 17 languages.
    30 vs 17
  • Newer model
    This robot vacuum was released in 2024, later than the average robot vacuum in 2023. The average release year for robot vacuums is 2023.
    2024 vs 2023
  • 30 mL more onboard water capacity
    This robot vacuum has a larger onboard water tank than the average robot vacuum (270 mL vs 240 mL). The average robot vacuum's onboard water tank holds 240 mL.
    270 mL vs 240 mL
  • 73.3% cheaper
    Xiaomi S20 is cheaper than the average robot vacuum (£150 vs £260).
    £150 vs £260
  • 73.3% cheaper
    Xiaomi S20 is cheaper than the average robot vacuum (£150 vs £260).
    £150 vs £260
  • Newer model
    This robot vacuum was released in 2024, later than the average robot vacuum in 2023. The average release year for robot vacuums is 2023.
    2024 vs 2023
  • Has a child lock
    This robot vacuum has a child lock, while the average robot vacuum does not. 44.9% of robot vacuums offer this.
  • 13 more languages supported
    This robot vacuum supports more languages than the average robot vacuum (30 vs 17). The average robot vacuum supports 17 languages.
    30 vs 17
  • 22 mm wider main brush
    This robot vacuum has a wider main brush than the average robot vacuum (200 mm vs 178 mm). The average robot vacuum has a main brush 178 mm wide.
    200 mm vs 178 mm
  • 1,000 Pa stronger maximum suction
    This robot vacuum has stronger maximum suction than the average robot vacuum (5,000 Pa vs 4,000 Pa). The average robot vacuum has a maximum suction pressure of 4,000 Pa.
    5,000 Pa vs 4,000 Pa
  • 30 mL more onboard water capacity
    This robot vacuum has a larger onboard water tank than the average robot vacuum (270 mL vs 240 mL). The average robot vacuum's onboard water tank holds 240 mL.
    270 mL vs 240 mL
  • 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.
  • 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
  • 1 fewer suction power levels
    This robot vacuum offers fewer suction power levels than the average robot vacuum (3 vs 4). The average robot vacuum offers 4 suction power levels.
    3 vs 4
  • 66 m² smaller cleaning area
    This robot vacuum has a smaller maximum cleaning area than the average robot vacuum (114 m² vs 180 m²). The average robot vacuum has a maximum cleaning area of 180 m².
    114 m² vs 180 m²
  • 30 min shorter runtime
    This robot vacuum runs for less time per charge than the average robot vacuum (120 min vs 150 min). The average robot vacuum runs for 150 min.
    120 min vs 150 min
  • 1.6 W higher standby power consumption
    This robot vacuum draws more power in standby than the average robot vacuum (3.6 W vs 2 W). The average robot vacuum draws 2 W in standby.
    3.6 W vs 2 W
  • 6.53x less popular
    Xiaomi S20 is less popular than the average robot vacuum (1 vs 6.5).
    1 vs 6.53
  • 6.53x less popular
    Xiaomi S20 is less popular than the average robot vacuum (1 vs 6.5).
    1 vs 6.53
  • 66 m² smaller cleaning area
    This robot vacuum has a smaller maximum cleaning area than the average robot vacuum (114 m² vs 180 m²). The average robot vacuum has a maximum cleaning area of 180 m².
    114 m² vs 180 m²
  • 30 min shorter runtime
    This robot vacuum runs for less time per charge than the average robot vacuum (120 min vs 150 min). The average robot vacuum runs for 150 min.
    120 min vs 150 min
  • 1.6 W higher standby power consumption
    This robot vacuum draws more power in standby than the average robot vacuum (3.6 W vs 2 W). The average robot vacuum draws 2 W in standby.
    3.6 W vs 2 W
  • 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.
  • 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
  • 1 fewer suction power levels
    This robot vacuum offers fewer suction power levels than the average robot vacuum (3 vs 4). The average robot vacuum offers 4 suction power levels.
    3 vs 4

Video reviews

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

Expert reviews

In-depth analysis and verdict from leading tech publications

J
jacktang.sg
19/07/2025
Summary of the review
Xiaomi Robot Vacuum S20 Review
T
test-achats.be
Date non spécifiée
Summary of the review
Xiaomi S20 full review, price, and specs by Test-Achats
(Translated)Show original
A
altroconsumo.it
2024
Summary of the review
XIAOMI S20 robot vacuum cleaner, Altroconsumo test and review
(Translated)Show original
T
test-aankoop.be
Onbekend
Summary of the review
Xiaomi S20: test, review, prices, and specifications
(Translated)Show original

Third-party reviews

What customers like about Xiaomi S20

  • Excellent 5,000 Pa suction effectively removes dust and hair.
  • Precise LDS laser navigation avoids obstacles and maps the home quickly.
  • Zigzag and Y-shaped routes provide deeper mopping that imitates manual cleaning.
  • Intuitive Mi Home app enables remote control, scheduling and customization.
  • Excellent value, making it one of the best budget options.
  • Long battery life of up to 120 minutes suits medium and large spaces.

What customers don't like about Xiaomi S20

  • A single side brush and round design can struggle to clean very tight corners thoroughly.
  • Mopping is useful for daily maintenance but struggles with very dried or embedded stains.
  • No self-emptying base, so the dustbin needs fairly frequent manual emptying.
  • Without advanced dual-camera technology, it can occasionally become tangled in loose cables or small floor objects.

Verdict

The Xiaomi Robot Vacuum S20 is an agile 3-in-1 cleaning device equipped with a 5,000 Pa suction fan blower, an LDS laser navigation system for 360-degree house mapping, and a 2-in-1 combination tank featuring a 400 ml dustbin alongside a 270 ml water reservoir. Its main advantages include high-precision path planning via smart zigzag and Y-shaped cleaning routes, efficient simultaneous sweeping and mopping, smart home integration with Google Assistant and Amazon Alexa, and an accommodating 3,200 mAh battery capacity that handles multi-room layouts. However, its downsides include an noticeably loud operation when running on its highest turbo setting, potential struggles to clear fine dust embedded deep inside thick carpets, and a basic passive mop pad system that lacks the active scrubbing pressure found on more expensive models.

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