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Robot Vacuums Methodology v1.0
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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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iRobot Roomba i3 review: 118 specs compared

Avg. price:~ÂŁ400Max suction power:1800 PaRuntime:75 minDustbin capacity:400 mLMax threshold height:20 mm

iRobot Roomba i3 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.

iRobot Roomba i3
6.0/10

Overall score

Score
6.0/ 10
âś•
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–Ľ
<55-66-77-88-99-10
Score components

80%

5.6

Technical score

20%

7.5

User score

â–ĽWorse than 84% of robot vacuums
6.7

Value for money

Value for money
6.7/ 10
âś•
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–Ľ
<55-66-77-88-99-10
Score components

70%

6.0

Overall score

30%

8.4

Price

â–ĽWorse than 92%
5.6

Technical score

Technical score
5.6/ 10
âś•
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–Ľ
<55-66-77-88-99-10
Score components

30%

5.8

Cleaning

23%

6.1

Navigation

18%

3.9

Mopping

12%

4.2

Battery

10%

8.8

Smart Features

7%

4.8

Design

â–ĽWorse than 87%
7.5

User score

User score
7.5/ 10
âś•
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–Ľ
<55-66-77-88-99-10
Score components

70%

8.0

User ratings

30%

6.3

Number of reviews

Based on ratings from across the web.
â–ĽWorse than 77%
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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 iRobot Roomba i3

Technical score
Technical score
5.6/ 10
âś•
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–Ľ
<55-66-77-88-99-10
Score components:

30%

5.8

Cleaning

23%

6.1

Navigation

18%

3.9

Mopping

12%

4.2

Battery

10%

8.8

Smart Features

7%

4.8

Design

5.6
User score
User score
7.5/ 10
âś•
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–Ľ
<55-66-77-88-99-10
Score components

70%

8.0

User ratings

30%

6.3

Number of reviews

Based on ratings from across the web.
7.5
Popularity
Popularity
6.3/ 10
âś•
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–Ľ
<55-66-77-88-99-10
Popularity:
iRobot Roomba i3 has a popularity index of 6.3, lower than that of 52.1% of robot vacuums and equal to that of 0.8% of robot vacuums.
6.3
Value for money
Value for money
6.7/ 10
âś•
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–Ľ
<55-66-77-88-99-10
Score components:

70%

6.0

Overall score

30%

8.4

Price

6.7
Max suction power
1,800 Pa
This robot vacuum has a maximum suction pressure of 1,800 Pa, which is lower than 86.4% of robot vacuums and equal to 1.5% of robot vacuums.
N. of suction power levels
1
This robot vacuum has 1 suction power levels, which is fewer than 92.3% of robot vacuums offer and the same number as 7.7% 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
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
no
This robot vacuum cannot mop floors, although 79% of robot vacuums offer this feature.
Mopping system type
none
This robot vacuum uses none for mopping. This system is less effective than those on 79.8% of robot vacuums and as effective as those on 20.2% of robot vacuums.
Mop pad type
none
Mop pad material
none
Mop pressure
N/A
Show more
Primary navigation technology
gyroscope
This robot vacuum uses gyroscope as its primary navigation system, which is less capable than the systems in 73.9% of robot vacuums and matched by 19.2% of robot vacuums.
Mapping capability
yes
This robot vacuum maps the floor. 74% of robot vacuums offer this feature.
Real-time mapping
no
This robot vacuum does not update its map in real time, although 68.7% of robot vacuums offer this feature.
Multiple map storage
no
This robot vacuum does not store multiple maps, although 56.6% 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
iRobot 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.
Show more
Battery capacity
1,800 mAh
This robot vacuum has a battery capacity of 1,800 mAh, which is lower than 95.3% of robot vacuums and equal to 4% of robot vacuums.
Battery type
Li-ion
Battery voltage
14.4 V
Runtime
75 min
This robot vacuum runs for 75 min per charge, which is shorter than 94.7% of robot vacuums and equal to 3.6% 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
92 mm
Width
338 mm
Length
338 mm
Weight
4.7 kg
This robot vacuum weighs 4.7 kg, making it heavier than 87.1% of robot vacuums and the same weight as 1.2% of robot vacuums.
Show more

iRobot Roomba i3 vs the average robot vacuum

246810TotalBatteryDesignSmart FeaturesNavigationCleaningMopping
  • 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.
  • Detects dirtier areas
    This robot vacuum detects dirtier areas, while the average robot vacuum does not detect dirtier areas.
  • Adjusts its cleaning height automatically
    This robot vacuum adjusts its cleaning height automatically, while the average robot vacuum uses a fixed cleaning height.
  • 2.5 h shorter charging time
    This robot vacuum takes less time to recharge fully than the average robot vacuum (2 h vs 4.5 h). The average robot vacuum takes 4.5 h.
    2 h vs 4.5 h
  • Dustbin full alert
    This robot vacuum alerts you when its dustbin is full, while the average robot vacuum does not. 19.5% of robot vacuums offer a dustbin full indicator.
  • 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.
  • 0.3 m longer power cord
    This robot vacuum has a longer power cord than the average robot vacuum (1.8 m vs 1.5 m). The average robot vacuum's power cord is 1.5 m long.
    1.8 m vs 1.5 m
  • 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
  • 2.5 h shorter charging time
    This robot vacuum takes less time to recharge fully than the average robot vacuum (2 h vs 4.5 h). The average robot vacuum takes 4.5 h.
    2 h vs 4.5 h
  • 0.3 m longer power cord
    This robot vacuum has a longer power cord than the average robot vacuum (1.8 m vs 1.5 m). The average robot vacuum's power cord is 1.5 m long.
    1.8 m vs 1.5 m
  • 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.
  • 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.
  • Detects dirtier areas
    This robot vacuum detects dirtier areas, while the average robot vacuum does not detect dirtier areas.
  • Adjusts its cleaning height automatically
    This robot vacuum adjusts its cleaning height automatically, while the average robot vacuum uses a fixed cleaning height.
  • Dustbin full alert
    This robot vacuum alerts you when its dustbin is full, while the average robot vacuum does not. 19.5% of robot vacuums offer a dustbin full indicator.
  • 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 infrared for obstacle avoidance, while the average robot vacuum uses hybrid.
    infrared vs hybrid
  • 3 fewer suction power levels
    This robot vacuum offers fewer suction power levels than the average robot vacuum (1 vs 4). The average robot vacuum offers 4 suction power levels.
    1 vs 4
  • 2,200 Pa weaker maximum suction
    This robot vacuum has weaker maximum suction than the average robot vacuum (1,800 Pa vs 4,000 Pa). The average robot vacuum has a maximum suction pressure of 4,000 Pa.
    1,800 Pa vs 4,000 Pa
  • More basic navigation
    This robot vacuum uses gyroscope for navigation, while the average robot vacuum uses LiDAR.
    gyroscope vs LiDAR
  • 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
  • 13.4% worse value for money
    iRobot Roomba i3 has worse value for money than the average robot vacuum (6.69 vs 7.6).
    6.69 vs 7.59
  • 6.6% lower user score
    User score
    7.5/ 10
    âś•
    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–Ľâ–Ľ
    <55-66-77-88-99-10
    iRobot Roomba i3
    the average robot vacuum
    iRobot Roomba i3 has a lower user score than the average robot vacuum (7.51 vs 8.000).
    7.51 vs 8
  • 53.9% more expensive
    iRobot Roomba i3 is more expensive than the average robot vacuum (ÂŁ400 vs ÂŁ260).
    ÂŁ400 vs ÂŁ260
  • 75 min shorter runtime
    This robot vacuum runs for less time per charge than the average robot vacuum (75 min vs 150 min). The average robot vacuum runs for 150 min.
    75 min vs 150 min
  • 1,400 mAh smaller battery capacity
    This robot vacuum has a smaller battery capacity than the average robot vacuum (1,800 mAh vs 3,200 mAh). The average robot vacuum has a battery capacity of 3,200 mAh.
    1,800 mAh vs 3,200 mAh
  • 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
  • Older model
    This robot vacuum was released in 2020, earlier than the average robot vacuum in 2023. The average release year for robot vacuums is 2023.
    2020 vs 2023
  • 31.7% heavier
    This robot vacuum is heavier than the average robot vacuum (4.7 kg vs 3.57 kg). The average robot vacuum weighs 3.57 kg.
    4.7 kg vs 3.57 kg
  • 3 dB louder
    This robot vacuum has a higher reported cleaning noise level than the average robot vacuum (68 dB vs 65 dB). The average robot vacuum has a reported noise level of 65 dB.
    68 dB vs 65 dB
  • 3 kg heavier base station
    This robot vacuum has a heavier base station than the average robot vacuum (7.3 kg vs 4.3 kg). The average robot vacuum's base station weighs 4.3 kg.
    7.3 kg vs 4.3 kg
  • More basic obstacle avoidance
    This robot vacuum uses infrared for obstacle avoidance, while the average robot vacuum uses hybrid.
    infrared vs hybrid
  • More basic navigation
    This robot vacuum uses gyroscope for navigation, while the average robot vacuum uses LiDAR.
    gyroscope vs LiDAR
  • 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 store multiple maps
    This robot vacuum does not store multiple maps, while the average robot vacuum stores multiple maps.
  • Does not update its map in real time
    This robot vacuum does not update its map in real time, while the average robot vacuum updates its map in real time.
  • Does not support virtual boundaries
    This robot vacuum does not support virtual boundaries, while the average robot vacuum supports virtual boundaries.
  • Does not show its location in real time
    This robot vacuum does not show its location in real time, while the average robot vacuum shows its location in real time.
  • 3 fewer suction power levels
    This robot vacuum offers fewer suction power levels than the average robot vacuum (1 vs 4). The average robot vacuum offers 4 suction power levels.
    1 vs 4
  • 2,200 Pa weaker maximum suction
    This robot vacuum has weaker maximum suction than the average robot vacuum (1,800 Pa vs 4,000 Pa). The average robot vacuum has a maximum suction pressure of 4,000 Pa.
    1,800 Pa vs 4,000 Pa
  • 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
  • Does not support zone cleaning
    This robot vacuum does not support zone cleaning, while the average robot vacuum supports zone cleaning.
  • Does not support room-by-room cleaning
    This robot vacuum does not support room-by-room cleaning, while the average robot vacuum supports room-by-room cleaning.
  • Does not include a cleaning tool
    This robot vacuum does not include a cleaning tool, while the average robot vacuum includes a cleaning tool.
  • Cannot mop floors
    This robot vacuum cannot mop floors, while the average robot vacuum can mop floors.
  • No water flow control
    This robot vacuum does not support water flow control, while the average robot vacuum does. 70% of robot vacuums support water flow control.
  • Less capable mopping system
    This robot vacuum uses none for mopping, while the average robot vacuum uses static pad.
    none vs static pad
  • 3 fewer water flow levels
    This robot vacuum offers fewer water flow levels than the average robot vacuum (0 vs 3). The average number of water flow levels is 3.
    0 vs 3

Video reviews

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

Expert reviews

In-depth analysis and verdict from leading tech publications

R
rtings.com
11/02/2025
Summary of the review
W
wired.com
21/11/2020
Summary of the review
T
techradar.com
06/12/2021
Summary of the review
R
reviewed.com
16/10/2020
Summary of the review
C
cgmagonline.com
12/11/2020
Summary of the review
A
au.pcmag.com
24/03/2022
Summary of the review
T
timleland.com
07/12/2020
Summary of the review
V
vacuumwars.com
11/04/2025
Summary of the review
V
vacuumwars.com
11/04/2025
Summary of the review
T
techgadgetscanada.com
05/07/2023
Summary of the review
E
expertreviews.co.uk
08/09/2021
Summary of the review
T
the-ambient.com
07/11/2020
Summary of the review
P
pcmag.com
23/03/2022
Summary of the review
L
lesnumeriques.com
25/05/2021
Summary of the review
F
frandroid.com
24/06/2025
Summary of the review
C
clubic.com
23/04/2021
Summary of the review
P
presse-citron.net
21/04/2021
Summary of the review
C
charlestech.fr
23/11/2021
Summary of the review
G
guide-aspirateur.net
03/05/2022
Summary of the review
Q
quechoisir.org
02/12/2021
Summary of the review

Third-party reviews

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

What customers like about iRobot Roomba i3

  • Excellent cleaning performance on carpets and hard floors, particularly with pet hair
  • Efficient, methodical, row-by-row cleaning navigation pattern
  • Dual rubber brush rollers effectively prevent hair tangles
  • High-quality build and, if chosen (i3+), self-emptying functionality
  • Easy to set up, user-friendly app control, and smart home integration (Alexa/Google)

What customers don't like about iRobot Roomba i3

  • Slower cleaning speed compared to some competitors
  • Lacks advanced navigation features like keep-out zones found in higher-end models
  • Higher recurring costs due to replacement parts (filters/bags)
  • Can struggle with getting stuck in complex room environments
  • Does not create lasting, detailed cleaning maps to choose specific rooms in the base model

Verdict

The iRobot Roomba i3 is a smart-pathing robot vacuum featuring a 3-Stage Cleaning System with 10x the Power-Lifting Suction compared to the Roomba 600 series, dual multi-surface rubber brushes, and a high-efficiency filter that captures 99% of pollen and pet allergens. Utilizing a gyroscope and optical floor-tracking sensors rather than a top-mounted camera, it navigates efficiently in straight, neat rows and utilizes integrated Dirt Detect and Reactive Sensor technologies to identify high-traffic messes and prevent getting stuck. Main pros include its exceptional deep carpet cleaning performance, voice assistant integration (Alexa and Google Assistant), personalized scheduling via iRobot OS, and a recharge-and-resume feature that allows its lithium-ion battery to continue cleaning after a dock recharge. However, major cons include a somewhat limited 75-minute battery life, loud operation, and the lack of advanced navigation features like customizable keep-out zones or multi-map storage.

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