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Products in this category are scored under Frontum Robot Vacuums Methodology v1.0: technical specifications plus authentic consumer ratings, with 0% commercial bias.
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DREAME X40 Ultra Complete review: 118 specs compared

Avg. price:~£880Max suction power:12000 PaRuntime:260 minDustbin capacity:300 mLMax threshold height:22 mm

DREAME X40 Ultra Complete 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.

DREAME X40 Ultra Complete
8.8/10

Overall score

Score
8.8/ 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
▼
<55-66-77-88-99-10
Score components

80%

8.8

Technical score

20%

8.8

User score

★Better than 99% 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
▼
<55-66-77-88-99-10
Score components

70%

8.8

Overall score

30%

5.9

Price

▲Better than 66%
8.8

Technical score

Technical score
8.8/ 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
▼
<55-66-77-88-99-10
Score components

30%

9.1

Cleaning

23%

9.4

Navigation

18%

8.8

Mopping

12%

8.2

Battery

10%

9.8

Smart Features

7%

5.0

Design

★Better than 95%
8.8

User score

User score
8.8/ 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
▼
<55-66-77-88-99-10
Score components

70%

8.6

User ratings

30%

9.5

Number of reviews

Based on ratings from across the web.
★Better than 93%
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Where to buy
*As an Amazon Associate, we earn from qualifying purchases.
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 DREAME X40 Ultra Complete

Technical score
Technical score
8.8/ 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
▼
<55-66-77-88-99-10
Score components:

30%

9.1

Cleaning

23%

9.4

Navigation

18%

8.8

Mopping

12%

8.2

Battery

10%

9.8

Smart Features

7%

5.0

Design

8.8
User score
User score
8.8/ 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
▼
<55-66-77-88-99-10
Score components

70%

8.6

User ratings

30%

9.5

Number of reviews

Based on ratings from across the web.
8.8
Popularity
Popularity
9.5/ 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
▼
<55-66-77-88-99-10
Popularity:
DREAME X40 Ultra Complete has a popularity index of 9.5, higher than that of 87.1% of robot vacuums and equal to that of 1.2% of robot vacuums.
9.5
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
▼
<55-66-77-88-99-10
Score components:

70%

8.8

Overall score

30%

5.9

Price

7.9
Max suction power
12,000 Pa
This robot vacuum has a maximum suction pressure of 12,000 Pa, which is higher than 89.7% of robot vacuums and equal to 1.3% of robot vacuums.
N. of suction power levels
5
This robot vacuum has 5 suction power levels, which is more than 93.7% of robot vacuums offer and the same number as 6.1% 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
4
This robot vacuum offers 4 cleaning modes, which is more than 38.2% of robot vacuums offer and the same number as 47.5% 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
rotating pads
This robot vacuum uses rotating pads for mopping. This system is more effective than those on 79.6% of robot vacuums and as effective as those on 16% of robot vacuums.
Mop pad type
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
Dreamehome
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.
Show more
Battery capacity
6,400 mAh
This robot vacuum has a battery capacity of 6,400 mAh, which is higher than 94.5% of robot vacuums and equal to 5.5% of robot vacuums.
Battery type
Li-ion
Battery voltage
14.4 V
Runtime
260 min
This robot vacuum runs for 260 min per charge, which is longer than 93.3% of robot vacuums and equal to 2.8% 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
97 mm
Width
350 mm
Length
350 mm
Weight
4.1 kg
This robot vacuum weighs 4.1 kg, making it heavier than 74.3% of robot vacuums and the same weight as 2.5% of robot vacuums.
Show more

DREAME X40 Ultra Complete vs the average robot vacuum

246810TotalBatteryDesignSmart FeaturesNavigationCleaningMopping
  • 8,000 Pa stronger maximum suction
    This robot vacuum has stronger maximum suction than the average robot vacuum (12,000 Pa vs 4,000 Pa). The average robot vacuum has a maximum suction pressure of 4,000 Pa.
    12,000 Pa vs 4,000 Pa
  • Has anti-tangle technology
    This robot vacuum has anti-tangle technology, while the average robot vacuum does not. 42.8% of robot vacuums offer this feature.
  • 110 min longer runtime
    This robot vacuum runs longer per charge than the average robot vacuum (260 min vs 150 min). The average robot vacuum runs for 150 min.
    260 min vs 150 min
  • Lifts its mop over carpets
    This robot vacuum lifts its mop over carpets, while the average robot vacuum does not lift its mop automatically.
  • Better mopping system
    This robot vacuum uses rotating pads for mopping, while the average robot vacuum uses static pad.
    rotating pads vs static pad
  • 3,200 mAh greater battery capacity
    This robot vacuum has a greater battery capacity than the average robot vacuum (6,400 mAh vs 3,200 mAh). The average robot vacuum has a battery capacity of 3,200 mAh.
    6,400 mAh vs 3,200 mAh
  • 120 more object types recognised
    This robot vacuum recognises more object types than the average robot vacuum (120 vs 0). The average robot vacuum recognises 0 object types.
    120 vs 0
  • Empties its dustbin automatically
    This robot vacuum empties its dustbin automatically, while the average robot vacuum requires manual dustbin emptying.
  • 10.5% higher user score
    User score
    8.8/ 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
    ▼
    ▼
    <55-66-77-88-99-10
    DREAME X40 Ultra Complete
    the average robot vacuum
    DREAME X40 Ultra Complete has a higher user score than the average robot vacuum (8.84 vs 8.000).
    8.84 vs 8
  • 45.1% more popular
    DREAME X40 Ultra Complete is more popular than the average robot vacuum (9.47 vs 6.5).
    9.47 vs 6.53
  • 110 min longer runtime
    This robot vacuum runs longer per charge than the average robot vacuum (260 min vs 150 min). The average robot vacuum runs for 150 min.
    260 min vs 150 min
  • 3,200 mAh greater battery capacity
    This robot vacuum has a greater battery capacity than the average robot vacuum (6,400 mAh vs 3,200 mAh). The average robot vacuum has a battery capacity of 3,200 mAh.
    6,400 mAh vs 3,200 mAh
  • Supports fast charging
    This robot vacuum supports fast charging, while the average robot vacuum does not support fast charging.
  • Supports off-peak charging
    This robot vacuum supports off-peak charging, while the average robot vacuum does not support off-peak charging.
  • 30 m² larger cleaning area
    This robot vacuum has a larger maximum cleaning area than the average robot vacuum (210 m² vs 180 m²). The average robot vacuum has a maximum cleaning area of 180 m².
    210 m² vs 180 m²
  • 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
  • Detects liquid spills
    This robot vacuum detects liquid spills, while the average robot vacuum does not. 5.4% of robot vacuums offer this feature.
  • Supports remote camera monitoring
    This robot vacuum supports remote camera monitoring, while the average robot vacuum does not. 13.4% of robot vacuums support this.
  • 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.
  • 15 more languages supported
    This robot vacuum supports more languages than the average robot vacuum (32 vs 17). The average robot vacuum supports 17 languages.
    32 vs 17
  • 120 more object types recognised
    This robot vacuum recognises more object types than the average robot vacuum (120 vs 0). The average robot vacuum recognises 0 object types.
    120 vs 0
  • 2 mm higher threshold clearance
    This robot vacuum can cross higher thresholds than the average robot vacuum (22 mm vs 20 mm). The average robot vacuum can cross thresholds up to 20 mm high.
    22 mm vs 20 mm
  • 8,000 Pa stronger maximum suction
    This robot vacuum has stronger maximum suction than the average robot vacuum (12,000 Pa vs 4,000 Pa). The average robot vacuum has a maximum suction pressure of 4,000 Pa.
    12,000 Pa vs 4,000 Pa
  • Has anti-tangle technology
    This robot vacuum has anti-tangle technology, while the average robot vacuum does not. 42.8% of robot vacuums offer this feature.
  • Empties its dustbin automatically
    This robot vacuum empties its dustbin automatically, while the average robot vacuum requires manual dustbin emptying.
  • Detects dirtier areas
    This robot vacuum detects dirtier areas, while the average robot vacuum does not detect dirtier areas.
  • 23 mm wider main brush
    This robot vacuum has a wider main brush than the average robot vacuum (201 mm vs 178 mm). The average robot vacuum has a main brush 178 mm wide.
    201 mm vs 178 mm
  • 1 more suction power levels
    This robot vacuum offers more suction power levels than the average robot vacuum (5 vs 4). The average robot vacuum offers 4 suction power levels.
    5 vs 4
  • 0.2 L larger auto-empty dust bag
    This robot vacuum has a larger auto-empty dust bag than the average robot vacuum (3.2 L vs 3 L). The average auto-empty dust bag capacity is 3 L.
    3.2 L vs 3 L
  • Lifts its mop over carpets
    This robot vacuum lifts its mop over carpets, while the average robot vacuum does not lift its mop automatically.
  • Better mopping system
    This robot vacuum uses rotating pads for mopping, while the average robot vacuum uses static pad.
    rotating pads vs static pad
  • Cleans its mop automatically at the dock
    This robot vacuum cleans its mop automatically at the dock, while the average robot vacuum does not clean its mop automatically at the dock.
  • Dries the mop automatically
    This robot vacuum dries its mop automatically at the dock, while the average robot vacuum does not. 18.5% of robot vacuums offer this.
  • Refills its water tank automatically
    This robot vacuum refills its water tank automatically, while the average robot vacuum requires manual water refilling.
  • Washes the mop with hot water
    This robot vacuum washes its mop with hot water at the base station, while the average robot vacuum does not. 13.4% of robot vacuums offer this.
  • 29 more water flow levels
    This robot vacuum offers more water flow levels than the average robot vacuum (32 vs 3). The average number of water flow levels is 3.
    32 vs 3
  • Dispenses cleaning solution automatically
    This robot vacuum dispenses cleaning solution automatically, while the average robot vacuum does not. 26.4% of robot vacuums offer this.
  • Supports cleaning solution
    This robot vacuum supports cleaning solution for mopping, while the average robot vacuum does not. 44.8% of robot vacuums support this.
  • 500 mL more clean water capacity
    This robot vacuum has a larger base station clean water tank than the average robot vacuum (4,500 mL vs 4,000 mL). The average base station clean water tank holds 4,000 mL.
    4,500 mL vs 4,000 mL
  • 500 mL more dirty water capacity
    This robot vacuum has a larger base station dirty water tank than the average robot vacuum (4,000 mL vs 3,500 mL). The average base station dirty water tank holds 3,500 mL.
    4,000 mL vs 3,500 mL
  • 160 mL less onboard water capacity
    This robot vacuum has a smaller onboard water tank than the average robot vacuum (80 mL vs 240 mL). The average robot vacuum's onboard water tank holds 240 mL.
    80 mL vs 240 mL
  • 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
  • 11 dB louder
    This robot vacuum has a higher reported cleaning noise level than the average robot vacuum (76 dB vs 65 dB). The average robot vacuum has a reported noise level of 65 dB.
    76 dB vs 65 dB
  • 8.7 kg heavier base station
    This robot vacuum has a heavier base station than the average robot vacuum (13 kg vs 4.3 kg). The average robot vacuum's base station weighs 4.3 kg.
    13 kg vs 4.3 kg
  • 14.8% heavier
    This robot vacuum is heavier than the average robot vacuum (4.1 kg vs 3.57 kg). The average robot vacuum weighs 3.57 kg.
    4.1 kg vs 3.57 kg
  • 3.38x more expensive
    DREAME X40 Ultra Complete is more expensive than the average robot vacuum (£880 vs £260).
    £880 vs £260
  • 0.5 W higher standby power consumption
    This robot vacuum draws more power in standby than the average robot vacuum (2.5 W vs 2 W). The average robot vacuum draws 2 W in standby.
    2.5 W vs 2 W
  • 3.38x more expensive
    DREAME X40 Ultra Complete is more expensive than the average robot vacuum (£880 vs £260).
    £880 vs £260
  • 0.5 W higher standby power consumption
    This robot vacuum draws more power in standby than the average robot vacuum (2.5 W vs 2 W). The average robot vacuum draws 2 W in standby.
    2.5 W vs 2 W
  • 11 dB louder
    This robot vacuum has a higher reported cleaning noise level than the average robot vacuum (76 dB vs 65 dB). The average robot vacuum has a reported noise level of 65 dB.
    76 dB vs 65 dB
  • 8.7 kg heavier base station
    This robot vacuum has a heavier base station than the average robot vacuum (13 kg vs 4.3 kg). The average robot vacuum's base station weighs 4.3 kg.
    13 kg vs 4.3 kg
  • 14.8% heavier
    This robot vacuum is heavier than the average robot vacuum (4.1 kg vs 3.57 kg). The average robot vacuum weighs 3.57 kg.
    4.1 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
  • 160 mL less onboard water capacity
    This robot vacuum has a smaller onboard water tank than the average robot vacuum (80 mL vs 240 mL). The average robot vacuum's onboard water tank holds 240 mL.
    80 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

T
techradar.com
02/01/2025
Summary of the review
V
vacuumwars.com
10/06/2024
Summary of the review
E
everydayhomecomfort.com
16/06/2026
Summary of the review
R
reviews.org
18/07/2024
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G
galaxus.ch
09/10/2024
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R
robotobzor.com
15/12/2024
Summary of the review
T
techgearlab.com
21/06/2025
Summary of the review
V
vacuumwars.com
10/06/2024
Summary of the review
O
orhancaliskan.com
20/05/2026
Summary of the review
G
galaxus.de
09/10/2024
Summary of the review
H
howtogeek.com
11/07/2024
Summary of the review
C
chip.de
17/04/2024
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C
connect.de
07/05/2024
Summary of the review
G
galaxus.ch
09/10/2024
Summary of the review
I
imtest.de
28/11/2024
Summary of the review
T
testen-mit-kopf.de
22/08/2025
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C
computerbild.de
05/08/2024
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galaxus.at
09/10/2024
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smart-home-fox.de
15/09/2025
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heise.de
27/06/2024
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Third-party reviews

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

What customers like about DREAME X40 Ultra Complete

  • Incredible 12,000 Pa suction power that handles small to medium debris effectively.
  • Innovative side-reach brush and mop-extend technology that thoroughly cleans corners and baseboards.
  • Top-tier AI navigation and obstacle avoidance that easily dodges items like cords and shoes.
  • Fully automated base station that washes pads with hot water, dries them with hot air, and self-empties.
  • Excellent battery life (6,400 mAh) capable of covering large floor plans in a single run.
  • Highly feature-rich app with robust customization settings and two-way pet video calling.
  • Smart CleanGenius mode that automatically detects heavily stained areas and re-cleans them.

What customers don't like about DREAME X40 Ultra Complete

  • Extremely high flagship price tag compared to standard alternatives.
  • The standard main brush is prone to getting long hair and pet fur tangled around it.
  • The massive base station takes up a significant amount of physical footprint in the room.
  • CleanGenius AI mode can occasionally exhibit erratic navigation sequences or misidentify carpet types.
  • The side brush automatically disables on carpets, which can leave debris along carpeted edges.
  • The sharp-angled auto-empty channel in the dock is susceptible to clogging from bulky debris.
  • Mixed to negative user feedback regarding the responsiveness of Dreame's customer support.

Verdict

The Dreame X40 Ultra Complete is a flagship robot vacuum and mop that delivers an industry-leading 12,000 Pa of Vormax suction power alongside a robust 6,400 mAh battery providing up to 200 minutes of runtime. Key features include its innovative SideReach extendable and liftable side brush, MopExtend RoboSwing technology for precise corner and edge cleaning, and an advanced AI RGB camera paired with 3D structured light to accurately avoid over 120 types of obstacles. Main pros include its fully automated hands-free base station that automatically empties a 300 mL onboard dustbin into a 3.2 L bag, detaches or lifts mop pads up to 10.5 mm to protect carpets, and self-cleans its mopping pads using 158°F (70°C) hot water followed by hot-air drying. However, notable cons include its very premium price tag, high noise levels when operating at maximum suction power, a potentially glitchy Clean Genius navigation pathing, and an automated extendable brush system that occasionally underutilizes or fails to extend on mixed surfaces like carpet runners.

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