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Roborock Saros 20: two-minute review
Roborock has raised the bar so high with its robot vacuums that it must be struggling to find new ways to improve, but the Saros 20 manages to do just that. It takes everything that was great about its predecessor — the Roborock Saros 10R; one of the best robot vacuums we’ve tested — and adds a couple of intriguing features on top.
Primary amongst the new additions on this robot vacuum is a 3.0 version of Roborock’s ‘AdaptiLift’ chassis, which can now lift the bot over even taller steps, as well as enabling it to hover at exactly the right height for effective cleaning on chunky rugs and thick carpets. I could see clear evidence of this upgrade in action, with the Saros 20 adjusting itself as it made its way about in my tests. From a robovac’s point of view, my home is relatively straightforward, but I suspect upgrade will really come into its own if you have thick rugs or especially tall room thresholds.
As is the standard with premium robovacs these days, the dock will take care of the vast majority of maintenance tasks for you — not only simple things like emptying the dust cup, but also washing (with hot water) and drying (with hot air) the mop pads, topping up water and dispensing detergent. It’s so effective that the only thing I’ve had to do over around a month of use is refill the main water tank and empty out the dirty one.
New to this model is the fact that the jauntily named ‘RockDock’ will also dry off the internal dust bag, to stop things getting musty over time. I’m not sure this is essential, although if your bot will be tackling damp debris, it could be key to avoiding things getting pongy or unhygienic.
The Roborock Saros 20 is ultra-pricey, but that’s no surprise given the amount of cutting-edge tech crammed in here, and the extensive feature list. Nor is the pricing out of whack with other brands’ flagship models. If you want the best of the best, the Saros 20 should be in the mix. However, given the rate at which Roborock releases new models, I’d expect discounts to start to appear fairly quickly, so I’d still hang on a few months to avoid paying full whack.
That’s the short version; read on for my full Roborock Saros 20 review.
Roborock Saros 20 review: price & availability
- List price: $1,599.99 / £1,309 / AU$2,999
- Available: Widely, including US, UK and AU
- Launched: Announced Jan 2026, on sale from Feb 2026
The Roborock Saros 20 was unveiled at CES in January 2026, and first went on sale in various European countries from February, at a price of €1,499. As of late March, it’s now also available in US, UK and Australia, at a list price of $1,599.99 / £1,309 / AU$2,999.
Regardless of where you live, this bot sits at the top of the premium price bracket. The high price is somewhat justified by the amount of cutting-edge tech crammed in here, the high build quality and the extensive feature list. This is one of the most capable robovacs on the market. However, some of the capabilities are nice-to-haves rather than essentials, and many people will be able to get away with paying less for a lower-specced machine, with very little compromise on performance.
It’s also worth noting that Roborock releases new models at quite a rapid rate — the Saros is one of three new bots to be unveiled at CES — and as a result we tend to see prices dropping pretty quickly. If you’re willing to be patient, you should be able to avoid paying full price on this model. In fact, at time of writing there’s already an early bird deal that knocks off $210 in the US, and £180 off in the UK.
- Value for money score: 3.5 out of 5
Roborock Saros 20 specs
|
Max suction: |
35,000Pa |
|
Robot size: |
13.8 x 13.9in / 35 x 35.3cm |
|
Robot height: |
3.14in / 7.98cm |
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Dock dimensions (W x D x H): |
15 x 120.6 x 124 in / 38.1 x 47.5 x 48.8cm |
|
Mop type: |
D-shaped, Dual spinning discs, Roller |
|
Max threshold clearance: |
Double layer thresholds up to 1.77 + 1.57 in / 4.5 + 4cm) |
|
Dust bin volume (base): |
2.5L |
|
Water tank volume: |
4L (clean), 3.5L (dirty) |
|
Base functions: |
Charge, empty dust, wash mop pads, dry mop pads, self-clean |
Roborock Saros 20 review: design
- Chassis boosts the bot over thresholds and hovers it over thick carpet
- Two spinning mop pads, one of which extends to clean edges
- Dock takes care of most maintenance, including drying the dust bag
Roborock has honed its robot vacuum designs to near perfection over the years, and the Saros 10 is a feast of features picked from previous models, plus a few all-new additions.
The Roborock Saros 20 is an upgraded version of the excellent Roborock Saros 10R and has a sister model, the Saros 20 Sonic (itself an upgrade of the Saros 10). The headline new addition is that the AdaptiLift Chassis — essentially, the little feet that can raise the robovac up — has been upgraded to a 3.0 version, and gained some cool new capabilities in the process. As well as enabling the Saros 20 to vault itself over tall room thresholds, and lift itself out of the situation if it gets stuck, it has a further trick that makes it especially good at handling thick carpet.
The bot can assess the depth of the carpet or rug in front of it, and elevate itself to one of a selection of preset heights, where it will hover as it cleans. This theoretically means an efficient clean without the risk of getting bogged down in the fibers. It’s suitable for pile up to 1.18in / 3cm.
One key point of difference between the Saros 20 and its Sonic sibling is the mopping setup. While the 20 Sonic has a single, D-shaped mop pad, the 20 has dual spinning discs. One can kick out to the side to mop close to the edges of rooms.
In fact, there’s a whole clever lifting-and-lowering setup that can adjust to exactly what’s going on under-bot. If the Saros 20 is tackling a mop-only task, its main roller will be elevated so floors get a thorough scrub without fine particles getting spread around or stuck in the roller. If tasked with just vacuuming, it’ll leave its mop pads in its dock. And if it’s on a mixed route, it can raise or lower its main roller and mops as required.
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On the vacuuming front, you’ve got a roller that includes rubber fins and bristles, to agitate carpet fibers and sweep up debris from hard floor. It’s split in the middle to help combat hair wrap, and the whole thing can be popped out from its casing for cleaning if required. This roller is supplemented by a side sweeper that can extend out to one side when the bot needs to sweep the edges of a room.
Another notable feature is the navigation system. The Saros 20 uses an upgraded version of ‘StarSight’, Roborock’s own navigation technology that does not require a raised LiDAR puck to be positioned on top of the robot. This means it’s shallow in profile, and as a result can sneak under relatively low furniture.
The object recognition has been improved, with Roborock promising recognition of over 200 common object types, as small as 0.8in / 2cm in height or width. In contrast, its Sonic sibling model uses more traditional LiDAR, but has a LiDAR puck that can raise or retract as required.
The jauntily named ‘RockDock’ clean station is the all-singing, all-dancing type that empties the bins, tops up the water tanks and washes and dries the mop pads for you. As is the current trend, Roborock has upped the cleaning temperatures to tackle grease and dirt more effectively: the mop pad cleaning water is 212°F / 100°C (i.e. boiling) and the drying air is 131°F / 55°C. Another added trick is that the dock will also dry its base and internal dust bag, apparently to lessen the risk of mold or odors.
Roborock Saros 20 review: performance
- Although hesitant at first, AdaptiLift lifting works well on tall thresholds
- Excellent at tackling pet hair on carpet
- Even, full-coverage mopping and very good vacuuming too
To get started with my review, I set the Saros 20 up in my home and used it as my main vacuum for around three weeks. During this time, I scheduled regular cleans of different types, and observed the bot’s capabilities. Having tested a number of Roborock robot vacuums now, I was expecting a straightforward setup process, and the Saros 20 didn’t let me down.
Getting it hooked up to my WiFi was painless, and the speedy initial mapping run produced a map that was decently accurate, even if it did think my lounge was a ‘sunroom’ (what even is a sunroom?).
In general, it just trundled out and completed its scheduled cleaning tasks with no fuss. It never got lost or needed rescuing, and based on the data it almost always followed a logical route around each room, too.
However, I did experience a few odd behaviors following more specific cleaning requests. Once, I sent it out to mop, but the mop pads were completely dry. Another time, I tasked it with a simple Zone clean, but rather than just cleaning the designated 1.5 square-meter area, it took a very convoluted, 20-minute sightseeing tour of my living room, stopping only when I instructed it to ‘Return to dock’. However, in day-to-day use it proved reliable and behaved how I expected and wanted it to.
Vacuuming
After a couple of weeks of regular vacuuming with the Saros 20, I was impressed. It consistently did a thorough job on both carpets and hard flooring, and I didn’t have any issues with clogging during self-empty, either — even though it was dealing with a decent amount of pet hair.
I also ran TechRadar’s standard robot vacuum suction tests, using loose tea (to represent fine particles), dry oats (to represent chunky particles) and dog hair (self-explanatory). I tested pickup on both a mid-pile carpet and a tiled floor, and the results were very good.
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On carpet, almost all the oats were cleared in a couple of passes — with only a few being flicked out of my chosen cleaning zone — and the robovac made a very good attempt at clearing the tea, too (a purposefully very tricky task). On hard floor the results were equally strong, although it required a higher setting to tackle the finest dusty tea particles.
The Saros 20 handled oats at the edge of a room fairly well, but I did need to go in with a manual vacuum and a crevice tool to clear these completely. As with all robovacs I’ve tested, the side sweeper brush can only do so much, but this model’s sweeper handled the challenge better than most.
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I was most impressed with how well the Saros 20 handled dog hair on carpet. I rubbed a fistful of loose hair clippings into our living room floor, being sure to dig it right into the fibers. I then set the Saros 20 on a Zone clean using the maximum vacuum settings. After two passes only a fine layer of hair remained, and two more all-but cleared it all. That’s an excellent result — typically, to clear pet hair you really need to get a manual vacuum out.
Mopping
In general use, the Saros 20 put in a seriously good shift when it came to mopping. The rotating mop pads did a stellar job of cleaning my tiled kitchen floor, covering the whole space evenly, removing marks and leaving a streak-free finish. It also reliably avoided mopping the thin, canvas rug, and I could see one of its pads popping out to one side as required to mop the edges of rooms.
To challenge the robovac further, I dribbled soy sauce and smeared honey on the tiled kitchen floor, then sent it out on a two-pass zone clean. It smeared the soy sauce about a bit on the first pass, then cleared it more effectively on the second. The honey put up more of a fight, and while the two passes did remove some of this sticky substance, I still needed to go in with a cloth to clear the remainder.
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That’s not a surprise — no matter what the marketing materials would have you believe, no robot vacuum can match a damp cloth and a bit of elbow grease when it comes to cleaning hard floors.
Note too that this style of mop pad isn’t a particularly choice for sticky or messy spills. The pads are only being cleaned when the bot returns to its dock, so to a certain extent the bot can only really smear the spillage around. (Roller mops, which are fed with clean water and the dirt scraped off as they go, tend to deliver more of a thorough mop. Although that mop style has its own down-sides, which I won’t get into here.)
The Saros 20 reliably dropped off its mop pads in the dock when embarking on a vacuum-only run, but I was surprised — given the precise lifting/lowering setup this robovac has — that the rotating side brush didn’t lift when mopping, even though the bot was on a mop-only pass. It pained me to see those spindly fibers spinning their way towards a puddle of soy sauce, and knowing they wouldn’t be cleaned during the mop pad washing process.
Navigation & object avoidance
The Saros 20 performed well on my object avoidance task, skirting carefully around a shoe and pausing to judge the gap between two objects before slowly making its way between them. The performance here wasn’t perfect — some things got pushed around when they should have been avoided, and as with every robot vacuum I’ve used, the Saros 20 couldn’t resist chowing down on a cable or two — but it’s good enough that I’d still recommend this bot for use in a fairly cluttered home.
I was especially interested in the advanced ‘AdaptiLift’ features, designed for use on thick carpet and for crossing tall thresholds. There was clear evidence that something was happening; on several occasions I could see the bot lifting and lowering in response to its surroundings. Although hesitant at first, the Saros 20 also learned how to cross the chunky room threshold between our wood laminate hall and carpeted living room, by backing up, raising its body up at the front, and approaching at speed.
Dock
The dock cleaning features are very impressive. After mopping the honey and soy sauce mess I expected to need to remove the mop pads and wash them manually, but after the self-clean cycle was complete they looked (and smelled) good as new, and with no stickiness to the touch, either.
I also had no issues with the self-empty mechanism jamming, as can happen when a robot vacuum has gobbled up too much pet hair. The automatic cleaning fluid dispensing is useful, and in general the dock just takes care of a good chunk of the maintenance so you just don’t have to think about it.
I’m yet to make my mind up on the self-drying feature. The dock emits a humming noise while this is going on, and while it’s not loud it is understandably noisier than a dock that doesn’t have this mode. I’ve never had problems with a dock getting musty or clogging due to dampness, but that’s not to say this drying feature isn’t doing good things for my robot vacuum setup hygiene.
- Performance score: 4.5 out of 5
Roborock Saros 20 review: app
- Oodles of control options
- Fairly easy to navigate, with a few exceptions
- Perhaps a little overwhelming for newcomers
As a seasoned robot vacuum tester, I’m generally a fan of the Roborock app. It offers plenty of control options, is pretty logical in layout, and I’ve never had any issues with bugs, glitches, or sloppy mistranslations. However, the sheer volume of information that Roborock is wrangling here means things can get a little overwhelming.
There are a few sections I feel could be streamlined, and I can imagine that a newcomer who’s not especially tech-savvy could have problems making sense of it all. Thankfully, the presets and ‘smart’ options mean even if you haven’t dug into all the various settings, you can still achieve some very decent cleaning.
Should you buy the Roborock Saros 20?
|
Attribute |
Notes |
Rating |
|---|---|---|
|
Value |
Expensive, but justified by all the tech crammed in — plus deals will start appearing soon. |
3.5 / 5 |
|
Design |
Low-profile, high-quality bot packed with useful features including a chassis that enables the bot to hover over thick carpet, and a dock that can dry itself to prevent mold and odors. |
5 / 5 |
|
Performance |
Strong vacuuming and very good mopping. Occasional odd behaviors, but very reliable in daily use. AdaptiLift innovation works well. |
4.5 / 5 |
|
App |
Well laid out and relatively intuitive given the sheer number of control options. |
4 / 5 |
How I tested the Roborock Saros 20
I used the Saros 20 as my main robot vacuum for around a month, during which time it followed a set cleaning schedule of mopping and vacuuming. During this time I got a feel for its cleaning capabilities as well as any failings. I also ran a series of standardized cleaning tests to get a more objective view of its position in the wider market. These included testing the vacuuming powers on carpet and hard floor, and with fine and chunky particles as well as dog hair. To test mopping, I used honey and soy sauce, and for object avoidance I laid out an obstacle course for it to make its way around.
I compared my findings to the many other robot vacuums I’ve tested, and weighed everything up against the price to ascertain if it offers strong value for money.
Read more about how we test robot vacuum cleaners
- First reviewed March 2026
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