Roborock S8 Max Ultra
Not sold at any store we monitor today, so not in our ranking.
- 0.8 inMop lift on carpethigher than 58 of 62
- 3.8 inRobot heightlower than 40 of 63
Which robot is right for your home? Find out in 7 questions →
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 Roborock S8 Max Ultra Best on 1 fact | Cheapest of the top 10 eufy Omni E25 Best on 2 facts | Highest score here Narwal Freo 20 Best on 5 facts | |
|---|---|---|---|
| Price and ranking | |||
| Lowest price | – | $599Amazon.com best | $1,099Narwal (brand store) |
| Score | best | ||
| Rank | – | rank 6 of 65 with an all-in-one station | rank 1 of 65 with an all-in-one station |
| Customer rating | ★ 4.2 · 2,801 reviews | ★ 4.4 · 54,077 reviews best | ★ 4.4 · 59 reviews best |
| Mopping | |||
| Mop type | flat or vibrating pad | roller mop | roller mop |
| Mop lift on carpet higher is better | 0.8 in (20 mm) best | 0.4 in (10.5 mm) | 0.4 in (10 mm) |
| Automatic mop detach | – | no | no |
| Washes the mop same on all | yes | yes | yes |
| Hot-air drying same on all | yes | yes | yes |
| Station | |||
| Station same on all | all-in-one station | all-in-one station | all-in-one station |
| Dust bag lasts longer is better | up to 49 days | up to 75 days | up to 120 days best |
| Plumbing hookup | – | no | – |
| Brush and obstacles | |||
| Anti-tangle brush same on all | yes | yes | yes |
| Obstacle avoidance same on all | AI camera | AI camera | AI camera |
| Climbs thresholds up to higher is better | 0.8 in (20 mm) | 0.8 in (21 mm) | 1.6 in (40 mm) best |
| Climbing system for high thresholds | – | no | no |
| Size, noise and age | |||
| Robot height lower is better | 3.8 in (9.7 cm) | 4.4 in (11.1 cm) | 3.7 in (9.5 cm) best |
| Noise not judged | – | 63 dB | – |
| On the market since | April 2024 | December 2024 | June 2026 |
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.
Roborock S8 Max Ultra specifications
The numbers that matter first, then every fact by group. As published by the maker or the store we read it from.
Roborock · on the market since April 2024
Consumables: a 2.5 l dust bag in the station, which lasts up to 49 days.
Dimensionsrobot and dock
From the published dimensions. The robot passes under furniture with 3.8 in of clearance or more. The dock needs a spot 16.1 in wide and 16.5 in deep.
Suction and brushes 5 facts
- Suction power
Suction in pascal, as the maker measures it. More pascal helps on carpet, but it says little about how well the robot picks grit off a hard floor.
- 8,000 Pa
- Anti-tangle brush
A brush that guides hair to the side instead of letting it wind around the shaft. It saves the cutting work in homes with long hair or pets.
- yes
- Extending side brush
The side brush swings out in a corner or along a baseboard, so the dust there is swept in too.
- yes
- Carpet detection
The robot notices when it drives onto a carpet. Most then raise their suction, and a mopping robot lifts its mop or leaves it at the dock.
- detects carpet and boosts suction
- 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 3 facts
- 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.
- flat or vibrating pad
- Mop lift on carpet
How far the robot lifts the mop when it drives onto a carpet. From about 0.4 in (10 mm) a medium pile stays dry.
- 0.8 in (20 mm)
- Mop extends to the edges
The pad slides out along a wall or a baseboard, so the last few inches are mopped as well.
- yes
Dock 10 facts
- Empties the dust bin
The dock empties the robot’s dust bin, usually after every run. You only empty the dock’s bag or bin.
- yes
- Bagless
The dock collects dust in a bin instead of a disposable bag. No bags to buy, but you empty it yourself.
- no
- Dust bag capacity
How much the dust bag in the dock holds.
- 2.5 l
- Dust bag lasts
How long the maker says a dust bag lasts with daily use. With pets or a lot of carpet it is shorter.
- up to 49 days
- Washes the mop
The dock washes the mop for you, so you do not rinse it by hand.
- yes
- Wash temperature
How hot the dock washes the mop. Above 140 °F (60 °C) grease comes off, which is what keeps a mop from smelling.
- 140 °F (60 °C)
- Dries the mop
The dock dries the mop afterwards, so it does not sit there wet and start to smell.
- yes
- Hot-air drying
Drying is done with warm air instead of cold. It is faster and it helps against smell.
- yes
- Dispenses detergent
The dock mixes detergent into the water itself, from its own bottle.
- yes
- Dock size (w × d × h)
The width, depth and height of the dock. Measure the spot you have in mind, and leave room for the lid and for the robot driving in.
- 16.1 × 16.5 × 18.5 in (40.9 × 41.9 × 47 cm)
Navigation and obstacles 5 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.
- LiDAR turret
- Obstacle avoidance
How the robot sees loose things on the floor, such as cables, socks or a pet accident. A camera with depth sensing sees more than a bumper that reacts on contact.
- AI camera
- 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.
- 0.8 in (20 mm)
- Camera on board
Whether the robot has a camera, and what for: to recognize obstacles, or also to show you a live picture of your home in the app.
- obstacle camera
- Stair-edge sensors
Sensors under the robot that see a drop, so it stops at the top of a staircase instead of falling down it.
- yes
Robot 3 facts
- Robot height
How tall the robot is. It decides whether it fits under your sofa, bed or cabinet.
- 3.8 in (9.7 cm)
- Robot diameter
How wide the robot is. Narrower gets between chair legs more easily, wider usually means a bigger dust bin.
- 13.9 in (35.3 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.
- 270 ml
Battery 3 facts
- Battery capacity
The capacity of the battery. It hints at the runtime, but how much the robot draws counts just as much.
- 5,200 mAh
- 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.
- 180 min
- Charging time
How long an empty battery takes to charge fully in the dock.
- 4 h
Smart features and warranty 3 facts
- Voice assistants
Which voice assistants the robot works with, such as Google Assistant or Alexa.
- Alexa, Siri, Google Home
- Scheduled runs
You set days and times, and the robot starts by itself, also when you are not at home.
- yes
- 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: us.roborock.com · product.roborock.com · vacuumwars.com · Manual · 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%5.4
5 cleaning abilities measured, on one scale for every robot.
- Deep clean on carpet4.4
- Pet hair6.7
- Mopping4.9
- Obstacle avoidance4.3
- Navigation5.6
Measured by Vacuum Wars (read on September 29, 2026).
Measured 5.2, counted 5.4: the fewer labs stand behind a result, the more we pull it toward the average of its station type.
-
Owners’ ratings 25%6.0
2,801 ratings, 4.2 stars on average, at Amazon.
-
Features 15%8.2
73 of 89 points for the facts the maker states.
- 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.
The testers’ picks
- Vacuum Wars · Position 93 of 151September 26, 2026
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 Roborock S8 Max Ultra
Does the Roborock S8 Max Ultra empty its own dust bin?
Yes. The station empties the robot’s dust bin after every run. The 2.5 l dust bag in the station lasts up to 49 days, the maker says.
Does the Roborock S8 Max Ultra wash and dry its own mop?
Yes. The station washes the mop itself, with water at 140 °F (60 °C). It then dries the mop with warm air.
Does the Roborock S8 Max Ultra work with Alexa, Google Home or Siri?
It works with Alexa, Siri and Google Home. Home Assistant has an official integration for this model.
How high a threshold can the Roborock S8 Max Ultra climb?
Thresholds up to 0.8 in (20 mm), the maker says. Measure your own thresholds: the ones to a bathroom or balcony are often higher.
Does the Roborock S8 Max Ultra fit under low furniture?
The robot is 3.8 in (9.7 cm) tall, so it fits under furniture with at least 3.8 in of clearance.
How long does the Roborock S8 Max Ultra run on one charge?
180 minutes on its quietest setting. A full charge takes 4 hours.
