EUREKA J12 Ultra Review | 118 Data compared

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  • Avg. price in UK: ~£700
  • Avg. price in US: ~$920
  • Max suction power: 5000 Pa
  • Runtime: 150 min
  • Dustbin capacity: 350 mL
  • Max threshold height: 18 mm

EUREKA J12 Ultra 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.

8.0

Overall score

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 components:

80.0%

8.0

Technical Score

20.0%

?

User score

Excellent
8.0

Technical Score

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 components:

30.0%

8.1

Cleaning

23.0%

9.6

Navigation

18.0%

8.0

Mopping

12.0%

7.2

Battery

10.0%

8.9

Smart Features

7.0%

2.6

Design

Excellent
?

User score

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 components:

70.0%

?

User reviews

30.0%

?

Popularity

  • 6.1
    Mopping

    Score components:

    35.0%

    7.6

    Mopping system type

    25.0%

    4.0

    Mop lifting

    20.0%

    4.0

    Auto water refill

    20.0%

    ?

    Water tank capacity

  • 7.9
    Pet homes

    Score components:

    35.0%

    10

    Anti-tangle technology

    30.0%

    6.0

    Max suction power

    20.0%

    10

    Carpet boost

    15.0%

    4.1

    Dustbin capacity

  • 9.2
    Navigation and mapping

    Score components:

    30.0%

    8.5

    Primary navigation technology

    30.0%

    10

    Obstacle avoidance technology

    20.0%

    ?

    Object recognition

    20.0%

    10

    Real-time mapping

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Best prices in UK

    N/A~ £700

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Eureka J12 Ultra is an all-in-one robot vacuum and mop featuring 5,000Pa suction power, a 5,200mAh battery providing up to 150 minutes of runtime, and a dual-rotary mopping system operating at 200 RPM with 7N of downward pressure. Its advanced DuoDetect AI 3D obstacle avoidance and LiDAR navigation allow for precise movement across areas up to 300m², while the multifunctional docking station automates maintenance by self-emptying into a 3L dust bag, washing mop pads with clean water, and drying them with 55°C hot air. Main pros include its highly efficient self-cleaning station, effective scrubbing performance on stubborn stains, and robust pet-friendly features like an anti-tangle roller brush. However, notable cons include its inability to automatically lift mop pads when encountering carpets, necessitating manual mode selection or removal of pads to keep rugs dry, and a tendency for the dual side brushes to occasionally scatter debris on hard floors during edge cleaning.

Technical Specifications of robot vacuum EUREKA J12 Ultra

Technical Score

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 components:

30.0%

?

Cleaning

23.0%

?

Navigation

18.0%

?

Mopping

12.0%

?

Battery

10.0%

?

Smart Features

7.0%

?

Design

8.0
EUREKA J12 Ultra has a technical score of 8, higher than that of 82.6% of robot vacuums.
User score

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 components:

70.0%

0.0

User reviews

30.0%

1.0

Popularity

?
Popularity
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.
1.0
EUREKA J12 Ultra has a popularity of 1 points, which is lower than 69.9% of products in this category.
Ratio quality/price

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 components:

60.0%

8.0

Overall score

40.0%

6.8

Price

7.6
EUREKA J12 Ultra has a quality-to-price ratio of 7.6 points, which is higher than 52.7% of products in this category.
Max suction power
What it is: Maximum suction power is the highest pressure the vacuum motor is rated to produce, measured in pascals.
When it matters: Higher figures can help lift embedded debris from carpet, but brush design and airflow also determine real cleaning performance.

Importance: HIGH

5,000 Pa
EUREKA J12 Ultra delivers 5,000 Pa of suction power, which is stronger than that of 63.5% of robot vacuums and equal to that of 6.8% of robot vacuums.
N. of suction power levels
What it is: The number of suction levels shows how many power settings can be selected.
When it matters: More levels give finer control over noise, battery use and cleaning strength on different floors.

Importance: MEDIUM

4
EUREKA J12 Ultra has a suction-level count of 4, which is higher than that of 49.4% of robot vacuums and the same as that of 44% of robot vacuums.
Motor type
What it is: Motor type identifies whether the suction motor uses a brushed or brushless design.
When it matters: Brushless motors generally offer better efficiency and durability, although complete airflow design still determines performance.

Importance: LOW

brushless
EUREKA J12 Ultra uses a motor type considered more efficient than those in 2.7% of robot vacuums and matched by 97.3% of robot vacuums.
Power
What it is: Power is the electrical input rating of the robot or its charging system.
When it matters: It describes energy demand, but it should not be treated as a direct measure of suction or floor-cleaning ability.

Importance: LOW

?
Cleaning modes
What it is: Cleaning modes are the distinct automatic or targeted cleaning programs available on the robot.
When it matters: A wider choice makes it easier to match cleaning behavior to rooms, spills, edges or quiet periods.

Importance: MEDIUM

4
EUREKA J12 Ultra offers 4 cleaning modes, which is more than 38.2% of robot vacuums and as many as 47.5% of robot vacuums.
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Mopping capability
What it is: Mopping capability means the robot can wipe hard floors with a damp pad or active mop system.
When it matters: It is useful for fine dust and light marks, but it does not automatically mean the robot can replace deep manual mopping.

Importance: MEDIUM

yes
EUREKA J12 Ultra can mop floors. This feature is available on 78.9% of robot vacuums.
Mopping system type
What it is: The mopping system type describes how the robot applies motion and pressure to its mop, such as a static pad, vibrating pad, rotating pads or roller.
When it matters: Active systems generally scrub dried marks better, while pad lifting and dock washing determine how practical they are on mixed floors.

Importance: HIGH

rotating pads
EUREKA J12 Ultra uses rotating pads for mopping, a system that is more effective than those in 79.6% of robot vacuums and matched by 16% of robot vacuums.
Mop pad type
What it is: Mop pad type describes the pad shape and attachment used by the mopping system.
When it matters: It affects floor contact, edge reach, replacement availability and whether the pads can be washed easily.

Importance: LOW

circular
Mop pad material
What it is: Mop pad material is the fabric or fibre used to wipe and absorb dirt from the floor.
When it matters: It influences absorption, scrubbing action, durability and how easily the pad releases dirt when washed.

Importance: LOW

microfiber
Mop pressure
What it is: Mop pressure is the downward force the mopping system applies to the floor.
When it matters: More controlled pressure can improve removal of dried marks, although pad motion and moisture delivery also matter.

Importance: LOW

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Primary navigation technology
What it is: The primary navigation technology is the main sensor system the robot uses to understand its position and plan a route.
When it matters: It affects route efficiency, coverage and how reliably the robot returns to its dock, especially in larger or more complex homes.

Importance: HIGH

LiDAR
EUREKA J12 Ultra 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
What it is: Mapping capability lets the robot create a floor plan instead of cleaning only from moment-to-moment sensor reactions.
When it matters: A saved map is important for room selection, no-go zones and predictable coverage.

Importance: MEDIUM

yes
EUREKA J12 Ultra maps the floor. This feature is available on 74% of robot vacuums.
Real-time mapping
What it is: Real-time mapping updates the floor plan and the robot's route while a cleaning run is in progress.
When it matters: It helps you follow progress, spot missed areas and see where the robot is if it becomes stuck.

Importance: LOW

yes
EUREKA J12 Ultra updates its map in real time. This feature is available on 68.5% of robot vacuums.
Grounded yes from data_scrape2/data_scrape4 (agreement or one clear yes with other source empty/noisy).
Multiple map storage
What it is: Multiple map storage keeps separate floor plans for more than one level or cleaning area.
When it matters: It is useful in multi-storey homes because the robot does not need to rebuild the map each time it changes floors.

Importance: LOW

yes
EUREKA J12 Ultra stores multiple maps. This feature is available on 56.5% of robot vacuums.
Map editing
What it is: Map editing lets you divide, merge, name and adjust rooms in the app.
When it matters: Accurate room boundaries make room-by-room schedules and targeted cleaning easier to use.

Importance: LOW

yes
EUREKA J12 Ultra lets you edit maps. This feature is available on 63.9% of robot vacuums.
Grounded yes from data_scrape2/data_scrape4 (agreement or one clear yes with other source empty/noisy).
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App control
What it is: App control lets you operate and configure the robot from a smartphone application.
When it matters: It is needed for maps, room selection, schedules and many advanced settings on modern robot vacuums.

Importance: LOW

yes
EUREKA J12 Ultra supports app control. This feature is available on 94.4% of robot vacuums.
App name
What it is: App name identifies the manufacturer's mobile application used to control the robot.
When it matters: It helps you check phone compatibility, account requirements and user feedback for the correct app before buying.

Importance: LOW

eureka robot
Wi-Fi connectivity
What it is: Wi-Fi connectivity links the robot to its app and cloud services through the home network.
When it matters: It enables remote control and updates, but setup quality depends on router compatibility and signal coverage.

Importance: LOW

yes
EUREKA J12 Ultra connects to Wi-Fi. This feature is available on 93.7% of robot vacuums.
Supported Wi-Fi bands
What it is: Supported Wi-Fi bands identify the wireless frequencies the robot can use, commonly 2.4 GHz and sometimes 5 GHz.
When it matters: Band support matters during setup because many robot vacuums connect only to a 2.4 GHz network.

Importance: LOW

2.4 GHz
Bluetooth connectivity
What it is: Bluetooth connectivity provides a short-range wireless link, often used during initial setup.
When it matters: It can simplify pairing but usually does not replace Wi-Fi for remote app control.

Importance: LOW

yes
EUREKA J12 Ultra connects via Bluetooth. This feature is available on 64.5% of robot vacuums.
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Battery capacity
What it is: Battery capacity is the amount of electrical charge the battery can store, measured in milliamp-hours.
When it matters: More capacity can support longer cleaning runs, but motor power, mopping and navigation also affect actual runtime.

Importance: MEDIUM

5,200 mAh
EUREKA J12 Ultra has a battery capacity of 5,200 mAh; it is higher than that of 65.2% of robot vacuums and equal to that of 28.2% of robot vacuums.
Grounded current sources converge on 5200 mAh battery capacity.
Battery type
What it is: Battery type identifies the battery chemistry used by the robot.
When it matters: It affects weight, service life and charging behavior, with lithium-ion now being the common modern design.

Importance: LOW

Li-ion
Battery voltage
What it is: Battery voltage is the nominal electrical voltage of the robot's battery pack.
When it matters: It is mainly useful for checking replacement-battery compatibility and does not by itself indicate runtime.

Importance: LOW

14.4
Runtime
What it is: Runtime is how long the robot is rated to clean on one charge under the stated test mode.
When it matters: Longer runtime matters on large floors, while recharge-and-resume can compensate for a smaller battery.

Importance: MEDIUM

150 min
EUREKA J12 Ultra runs for 150 min per charge; this is longer than 47.3% of robot vacuums and equal to 11.4% of robot vacuums.
Recharge and resume
What it is: Recharge and resume sends the robot back to charge and then returns it to the unfinished part of the map.
When it matters: It allows large cleaning jobs to finish without manual intervention when one battery charge is not enough.

Importance: LOW

yes
EUREKA J12 Ultra resumes cleaning after charging. This feature is available on 83.1% of robot vacuums.
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Shape
What it is: Shape describes the robot's body outline, most commonly round or D-shaped.
When it matters: Shape influences corner reach and manoeuvring, although brush placement and route planning are equally important.

Importance: LOW

round
Height
What it is: Height is the vertical clearance required by the robot.
When it matters: A lower body can clean under more sofas, beds and cabinets, but measure the furniture gap before relying on it.

Importance: LOW

107.5 mm
EUREKA J12 Ultra is 107.5 mm tall; this is higher than 96.8% of robot vacuums.
Width
What it is: Width is the side-to-side size of the robot.
When it matters: It determines whether the robot can pass between chair legs, furniture and other narrow spaces.

Importance: LOW

350 mm
EUREKA J12 Ultra is 350 mm wide; this is wider than 63.5% of robot vacuums and equal to 20.3% of robot vacuums.
Length
What it is: Length is the front-to-back size of the robot.
When it matters: Together with width and shape, it affects turning space and access around closely placed furniture.

Importance: LOW

350 mm
EUREKA J12 Ultra is 350 mm long; this is longer than 62% of robot vacuums and equal to 21.1% of robot vacuums.
Weight
What it is: Weight is the mass of the robot itself, excluding its dock.
When it matters: A lighter robot is easier to carry between floors, while weight has little direct connection to cleaning quality.

Importance: LOW

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EUREKA J12 Ultra vs the average robot vacuum

  • Prevents hair tangles
    EUREKA J12 Ultra prevents hair tangles, while the average robot vacuum has no anti-tangle system.
    Grounded yes from data_scrape sources: Anti-tangle main brush
    What it is: Anti-tangle technology is designed to prevent or remove hair wrapped around the main brush and axles.
    When it matters: It is especially valuable in homes with pets or long hair because it reduces manual brush cleaning.

    Importance: MEDIUM

    EUREKA J12 Ultra prevents hair tangles, while the average robot vacuum has no anti-tangle system.
  • Better mopping system
    EUREKA J12 Ultra uses rotating pads for mopping, while the average robot vacuum uses static pad.
    What it is: The mopping system type describes how the robot applies motion and pressure to its mop, such as a static pad, vibrating pad, rotating pads or roller.
    When it matters: Active systems generally scrub dried marks better, while pad lifting and dock washing determine how practical they are on mixed floors.

    Importance: HIGH

    EUREKA J12 Ultra 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
    EUREKA J12 Ultra cleans its mop automatically at the dock, while the average robot vacuum does not clean its mop automatically at the dock.
    What it is: A self-cleaning dock washes its mop tray, mop pads or both with limited manual work.
    When it matters: It reduces hands-on maintenance, but the dirty-water tank and dock tray still need periodic cleaning.

    Importance: LOW

    EUREKA J12 Ultra cleans its mop automatically at the dock, while the average robot vacuum does not clean its mop automatically at the dock.
  • 20 rpm faster mop rotation
    EUREKA J12 Ultra rotates its mops at 200 rpm, compared with 180 rpm for the average robot vacuum.
    What it is: Mop rotation speed is how quickly rotating mop pads turn.
    When it matters: Higher speed can increase scrubbing action, but cleaning solution, pressure and pad condition also affect the result.

    Importance: MEDIUM

    EUREKA J12 Ultra rotates its mops at 200 rpm, compared with 180 rpm for the average robot vacuum.200 rpm vs 180 rpm
  • 0.97 % Higher filtration efficiency
    EUREKA J12 Ultra has a higher filtration efficiency than the average robot vacuum (100% vs 99%).
    One grounded fallback source indicates 99.97% filtration.
    What it is: Filter efficiency is the stated percentage of particles the filter can retain under its specified test conditions.
    When it matters: It matters for fine dust and allergens, although leakage around the filter can reduce whole-machine performance.

    Importance: MEDIUM

    EUREKA J12 Ultra has a higher filtration efficiency than the average robot vacuum (100% vs 99%).99.97 % vs 99 %
  • Dries its mop automatically at the dock
    EUREKA J12 Ultra dries its mop automatically at the dock, while the average robot vacuum does not dry its mop automatically.
    What it is: Automatic mop drying uses air or heat to dry the pads after washing.
    When it matters: It helps limit odour and microbial growth when damp pads would otherwise remain on the dock.

    Importance: LOW

    EUREKA J12 Ultra dries its mop automatically at the dock, while the average robot vacuum does not dry its mop automatically.
  • 120 m² more cleaning coverage
    EUREKA J12 Ultra can clean up to 300 m² per charge, compared with 180 m² for the average robot vacuum.
    What it is: Maximum cleaning area is the largest floor area the robot is rated to cover in one cleaning task.
    When it matters: It helps indicate whether the robot suits a large layout, although obstacles, power mode and mopping can reduce coverage.

    Importance: LOW

    EUREKA J12 Ultra can clean up to 300 m² per charge, compared with 180 m² for the average robot vacuum.300 m² vs 180 m²
  • 2,000 mAh more battery capacity
    EUREKA J12 Ultra has a battery capacity of 5,200 mAh, compared with 3,200 mAh for the average robot vacuum.
    Grounded current sources converge on 5200 mAh battery capacity.
    What it is: Battery capacity is the amount of electrical charge the battery can store, measured in milliamp-hours.
    When it matters: More capacity can support longer cleaning runs, but motor power, mopping and navigation also affect actual runtime.

    Importance: MEDIUM

    EUREKA J12 Ultra has a battery capacity of 5,200 mAh, compared with 3,200 mAh for the average robot vacuum.5200 mAh vs 3200 mAh
  • 120 m² more cleaning coverage
    EUREKA J12 Ultra can clean up to 300 m² per charge, compared with 180 m² for the average robot vacuum.
  • 2,000 mAh more battery capacity
    EUREKA J12 Ultra has a battery capacity of 5,200 mAh, compared with 3,200 mAh for the average robot vacuum.
  • Includes a child lock
    EUREKA J12 Ultra includes a child lock, while the average robot vacuum has no child lock.
  • Supports more languages
    EUREKA J12 Ultra supports 28 languages, compared with 17 on the average robot vacuum.
  • Prevents hair tangles
    EUREKA J12 Ultra prevents hair tangles, while the average robot vacuum has no anti-tangle system.
  • 0.97 % Higher filtration efficiency
    EUREKA J12 Ultra has a higher filtration efficiency than the average robot vacuum (100% vs 99%).
  • 1,000 Pa stronger suction
    EUREKA J12 Ultra delivers 5,000 Pa, compared with 4,000 Pa for the average robot vacuum.
  • Better mopping system
    EUREKA J12 Ultra uses rotating pads for mopping, while the average robot vacuum uses static pad.
  • Cleans its mop automatically at the dock
    EUREKA J12 Ultra cleans its mop automatically at the dock, while the average robot vacuum does not clean its mop automatically at the dock.
  • 20 rpm faster mop rotation
    EUREKA J12 Ultra rotates its mops at 200 rpm, compared with 180 rpm for the average robot vacuum.
  • Dries its mop automatically at the dock
    EUREKA J12 Ultra dries its mop automatically at the dock, while the average robot vacuum does not dry its mop automatically.
  • 1,100 mL more dirty-water capacity
    2 mL more dirty-water capacity: EUREKA J12 Ultra compared with the average robot vacuum.
  • Dispenses cleaning solution automatically
    EUREKA J12 Ultra dispenses cleaning solution automatically, while the average robot vacuum does not dispense cleaning solution automatically.
  • Supports cleaning solution
    EUREKA J12 Ultra supports cleaning solution, while the average robot vacuum does not support cleaning solution.
  • 1.5 h slower charging
    EUREKA J12 Ultra takes 6 h to charge, compared with 4.5 h for the average robot vacuum.
  • 13.5 mm taller body
    EUREKA J12 Ultra is 107.5 mm tall, compared with 94 mm for the average robot vacuum.
  • 22.3 cm taller base station
    EUREKA J12 Ultra has a base station that is 56.6 cm tall, compared with 34.3 cm for the average robot vacuum.
  • 3 dB louder operation
    EUREKA J12 Ultra produces 68 dB of noise, compared with 65 dB for the average robot vacuum.
  • 9.65 cm wider base station
    EUREKA J12 Ultra has a base station that is 41.2 cm wide, compared with 31.55 cm for the average robot vacuum.
  • 11.35 mm wider body
    EUREKA J12 Ultra is 350 mm wide, compared with 338.65 mm for the average robot vacuum.
  • 10 mm longer body
    EUREKA J12 Ultra is 350 mm long, compared with 340 mm for the average robot vacuum.
  • 9.4 cm deeper base station
    EUREKA J12 Ultra has a base station that is 38.1 cm deep, compared with 28.7 cm for the average robot vacuum.
  • 2 mm less threshold clearance
    EUREKA J12 Ultra climbs thresholds up to 18 mm, compared with 20 mm for the average robot vacuum.
  • 50 mL smaller dustbin
    EUREKA J12 Ultra has a dustbin capacity of 350 mL, compared with 400 mL for the average robot vacuum.
  • 2 mm less threshold clearance
    EUREKA J12 Ultra climbs thresholds up to 18 mm, compared with 20 mm for the average robot vacuum.
    What it is: Maximum threshold height is the tallest doorway strip or floor transition the robot is rated to climb.
    When it matters: It determines whether the robot can move between rooms without becoming stuck at raised thresholds.

    Importance: MEDIUM

    EUREKA J12 Ultra climbs thresholds up to 18 mm, compared with 20 mm for the average robot vacuum.18 mm vs 20 mm
  • 1.5 h slower charging
    EUREKA J12 Ultra takes 6 h to charge, compared with 4.5 h for the average robot vacuum.
    What it is: Charging time is the approximate time required to refill the battery from low charge.
    When it matters: A shorter charge is useful when the robot must resume an unfinished large cleaning job.

    Importance: LOW

    EUREKA J12 Ultra takes 6 h to charge, compared with 4.5 h for the average robot vacuum.6 h vs 4.5 h
  • 13.5 mm taller body
    EUREKA J12 Ultra is 107.5 mm tall, compared with 94 mm for the average robot vacuum.
    What it is: Height is the vertical clearance required by the robot.
    When it matters: A lower body can clean under more sofas, beds and cabinets, but measure the furniture gap before relying on it.

    Importance: LOW

    EUREKA J12 Ultra is 107.5 mm tall, compared with 94 mm for the average robot vacuum.107.5 mm vs 94 mm
  • 22.3 cm taller base station
    EUREKA J12 Ultra has a base station that is 56.6 cm tall, compared with 34.3 cm for the average robot vacuum.
    What it is: Base-station height is the vertical size of the dock.
    When it matters: It determines whether the station fits under shelves or counters and whether its tanks can be removed easily.

    Importance: LOW

    EUREKA J12 Ultra has a base station that is 56.6 cm tall, compared with 34.3 cm for the average robot vacuum.56.6 cm vs 34.3 cm
  • 3 dB louder operation
    EUREKA J12 Ultra produces 68 dB of noise, compared with 65 dB for the average robot vacuum.
    What it is: Noise level range shows the sound produced across the robot's operating modes.
    When it matters: Lower noise is helpful for cleaning while people work, talk, sleep or remain at home with noise-sensitive pets.

    Importance: LOW

    EUREKA J12 Ultra produces 68 dB of noise, compared with 65 dB for the average robot vacuum.68 dB vs 65 dB
  • 2.69x more expensive
    EUREKA J12 Ultra is more expensive than the average robot vacuum (£700 vs £260).
    EUREKA J12 Ultra is more expensive than the average robot vacuum (£700 vs £260).£700 vs £260
  • 9.65 cm wider base station
    EUREKA J12 Ultra has a base station that is 41.2 cm wide, compared with 31.55 cm for the average robot vacuum.
    What it is: Base-station width is the side-to-side space occupied by the dock.
    When it matters: It matters when fitting a self-emptying or mop-washing station into a narrow utility area.

    Importance: LOW

    EUREKA J12 Ultra has a base station that is 41.2 cm wide, compared with 31.55 cm for the average robot vacuum.41.20 cm vs 31.55 cm
  • 11.35 mm wider body
    EUREKA J12 Ultra is 350 mm wide, compared with 338.65 mm for the average robot vacuum.
    What it is: Width is the side-to-side size of the robot.
    When it matters: It determines whether the robot can pass between chair legs, furniture and other narrow spaces.

    Importance: LOW

    EUREKA J12 Ultra is 350 mm wide, compared with 338.65 mm for the average robot vacuum.350 mm vs 338.65 mm

Graphic comparison of EUREKA J12 Ultra and other robot vacuums

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Third-party reviews

What customers like about EUREKA J12 Ultra?

  • Powerful 5000Pa suction that effectively handles pet hair, crumbs, and fine dirt on both hard floors and carpets.
  • Efficient dual-rotary spinning mops that apply 7N downward pressure to scrub away stubborn, dried stains.
  • Excellent obstacle avoidance utilizing LiDAR and 3D dual-laser sensors to navigate accurately, even in dark rooms.
  • Comprehensive all-in-one base station that automatically empties dust, washes the mops, and dries them with 55°C hot air to prevent mold and odors.
  • Large-capacity water tanks (4.7L clean / 4.6L dirty) and a 3L dust bag that drastically reduce the frequency of manual maintenance.
  • Good build quality and a sleek, sturdy design that fits well into home decor without feeling cheap.
  • Clever 'bum-moving' edge-cleaning behavior that helps the mops reach closer to room corners and borders.

What customers dislike about EUREKA J12 Ultra?

  • Software and app glitches, such as intermittent trouble saving custom zone cleaning settings or failing to follow the preferred room sequence.
  • Occasional mapping or navigation bugs where the robot prematurely ends a cycle, falsely claiming cleaning is complete after covering only a small area.
  • Inability to automatically lift the mop pads when transitioning onto carpets, requiring users to rely on specific app modes (like 'vacuum first, then mop') or manually detach the pads.
  • The front side rotating brushes can occasionally scatter loose debris into previously cleaned areas rather than pulling it directly into the suction path.
  • The base station uses cold water for washing the mop pads, unlike newer flagship models that utilize hot water.

Expert reviews

C
community.heyupnow.com
28/08/2024
Summary of the review
C
community.heyupnow.com
29/08/2024
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C
connect.de
12. Mai 2024
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T
tomsguide.fr
14/05/2024
Summary of the review
I
it-connect.fr
18/05/2024
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J
journaldugeek.com
11/07/2024
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M
muycomputer.com
07/05/2024
Summary of the review
C
corriere.it
30/04/2026
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S
smartworld.it
11/05/2024
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T
tuttoandroid.net
21/05/2024
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