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iRobot Roomba 671

Not sold at any store we monitor today, so not in our ranking.

Customer rating ★ 4.1 from 907 reviews at Amazon

Where it leads robots without a stationAll 9 facts →
  • 3.6 inRobot heightlower than 5 of 9

Which robot is right for your home? Find out in 7 questions →

iRobot Roomba 671 (black)

Before you buy, compare it with 2 recommended alternatives

No store here sells this model today, so beside it the highest-scored model with the same kind of station that one does, and the cheapest of the top 10.

Green is the best of these 3, also when they share the lead.

This model iRobot Roomba 671 Cheapest of the top 10 ILIFE V2 Best on 1 fact Highest score here Tikom G8000 Max Best on 4 facts
Price and ranking
Lowest price – $99Amazon.com best $129Amazon.com
Score 3.8 2.8 4.5 best
Rank – rank 8 of 9 without a station rank 1 of 9 without a station
Customer rating ★ 4.1 · 907 reviews ★ 4.2 · 24,424 reviews ★ 4.4 · 4,893 reviews best
Mopping
Mop type no mop no mop flat or vibrating pad
Washes the mop – – no
Station
Station same on all charging dock only charging dock only charging dock only
Brush and obstacles
Anti-tangle brush – yes –
Obstacle avoidance – – none
Climbs thresholds up to higher is better 0.6 in (16 mm) 0.6 in (15 mm) 0.7 in (18 mm) best
Size, noise and age
Robot height lower is better 3.6 in (9.1 cm) 3 in (7.6 cm) 3 in (7.6 cm) best
Noise not judged – 60 dB –
On the market since – – March 2025

Facts as the maker states them. A dash means the maker does not name it. Each model’s page gives the source of every fact. Noise is the maker’s own figure, so we do not judge it, and a customer rating only counts from 20 reviews.

iRobot Roomba 671 specifications

The numbers that matter first, then every fact by group. As published by the maker or the store we read it from.

Robot height3.6 in
Climbs thresholds up to0.6 in
Runtime per charge90 min
Suction and brushes 1 fact
Dirt detection

A sensor notices where more dirt lies, at the doormat for example, and the robot cleans that patch longer or a second time.

yes
Mopping 1 fact
Mop type

How the mop is built: flat pads, two spinning discs or a roller. Discs press harder on dried-on dirt, a roller rinses itself while it works.

no mop
Navigation and obstacles 2 facts
Navigation

How the robot maps your home and follows that map. Lidar measures with a laser and works in the dark, a camera looks along and recognizes more.

gyroscope
Climbs thresholds up to

The highest threshold the robot takes, as the maker states it. Measure your own: the step into a bathroom or onto a balcony is often higher.

0.6 in (16 mm)
Robot 2 facts
Robot height

How tall the robot is. It decides whether it fits under your sofa, bed or cabinet.

3.6 in (9.1 cm)
Dust bin in the robot

How much dust the robot holds before you empty it. It matters less with a self-emptying dock, which empties the bin after every run.

600 ml
Battery 1 fact
Runtime per charge

How long the robot cleans on one charge, at its quietest setting. After that it recharges and carries on where it stopped.

90 min
Smart features and warranty 2 facts
Voice assistants

Which voice assistants the robot works with, such as Google Assistant or Alexa.

Alexa, Google Assistant
Home Assistant

Whether the robot works with Home Assistant, the home automation software you run yourself. Official means the integration comes with Home Assistant itself, community that volunteers maintain it.

official integration

Sources: irobot.com · amazon.com · homesupport.irobot.com · vacuumwars.com · home-assistant.io

Our score

Confidence: high. Two or more labs, or one lab and 300 or more owners’ ratings. The highest score today is 7.6.

  • Lab tests 60%3.1

    5 cleaning abilities measured, on one scale for every robot.

    • Deep clean on carpet8.0
    • Pet hair2.5
    • Mopping0.0
    • Obstacle avoidance0.0
    • Navigation2.5

    Measured by Vacuum Wars (read on September 29, 2026).

    Measured 3.0, counted 3.1: the fewer labs stand behind a result, the more we pull it toward the average of its station type.

  • Owners’ ratings 25%5.5

    907 ratings, 4.1 stars on average, at Amazon.

  • Features 15%–

    Features, 15%: too few facts known yet, so this part is left out.

  • Price never countsA sale can’t lift a model. Today’s lowest price sits beside the score, checked every morning.
  • No test, no rankOnly robots a lab has tested are ranked. The rest get a provisional score.
  • Reviewers beside, not insideReviewers’ picks are shown next to the score and do not count in it.

How we work this out →

The testers’ picks

Positions and labels, never text. These picks are shown beside the score and do not count in it. How the score comes about is on the method page.

Frequently asked questions about the iRobot Roomba 671

Can the iRobot Roomba 671 mop?

No, this model only vacuums.

Does the iRobot Roomba 671 work with Alexa, Google Home or Siri?

It works with Alexa and Google Assistant. Home Assistant has an official integration for this model.

How high a threshold can the iRobot Roomba 671 climb?

Thresholds up to 0.6 in (16 mm), the maker says. Measure your own thresholds: the ones to a bathroom or balcony are often higher.

Does the iRobot Roomba 671 fit under low furniture?

The robot is 3.6 in (9.1 cm) tall, so it fits under furniture with at least 3.6 in of clearance. It has no turret on top.

How long does the iRobot Roomba 671 run on one charge?

90 minutes on its quietest setting.

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