Roborock Saros 20 review: A smarter, more refined robot vacuum, but is it worth the upgrade?

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The best premium robot vacuums and mops will take frequent house cleaning off your schedule. They're helpful without being intrusive or distracting. The Roborock Saros 20 is one of the latest entries to this space. As Roborock's 2026 flagship level offering, this slim,feature-packed robot capable of going under couches but over big thresholds thanks to a lifting chassis that raises its body over three inches and incorporates AI features to create personalized cleaning plans.

I've tested several Roborock cleaning assistants over the last five years, and each time they've gotten noticeably better. This year, however, the Saros 20 is more of the same instead of growing by leaps and bounds over the Saros 10R. Specifically, our targeted cleaning tests left something to be desired, even if it can be meticulous with smaller messes or more routine cleaning.

Retailing for $1,600, I don't think the Saros 20 is a great value at full price, but it does still have some attractive qualities that make it worth considering when it goes on sale. You won't find many vacuums and mops that are this thin, quiet, and sleek that can also lift themselves over thick rugs or room-dividing thresholds — potentially a preview of more capable climbing bots.

Design and first impressions

If you were to put the last few Roborock Saros robots next to each other, it might be hard for most people to pick out the new Saros 20 from the lineup. They're different, but only slightly. The newest one remains thin and unassuming, much like its predecessor, the Saros 10R.

Despite some changes on paper, such as increased suction power and improved vision, this year's Saros 20 is very iterative in practice compared to last year's model. That includes its similarly sized dock and robot, as well as its circular mopping pads and spit roller brush design.

The good news is that, like the other recent Roborock units, the Saros 20 feels well-built and sturdy. I also prefer its matte-finish dock to the shinier Saros 10R and the mirror-like finish of the Saros Z70. The dock size is average for a premium robot vacuum and mop. If you're looking for a smaller one, the Eufy C20 will fit in more places but offers less functionality.

Setup and app experience

There used to be more differentiation among the mobile apps of companies making robot vacuums. Now, they're all very similar. Roborock's app is among the most polished, but familiar enough that if you're switching from Ecovacs, Dreame, or Eufy, you won't be lost.

Out of the box, the app handles software updates and won't let you do much until it runs an initial mapping of your home. That part was fast and seamless.

In the app, the company simplifies its entire cleaning experience down to what looks like a play button in a music app. Roborock puts this button front and center, which activates SmartPlan 3.0. This AI setting determines which rooms and areas to clean and how intensively to clean them.

Vacuuming performance

I've noticed more robot vacuums and mops are beginning to implement more AI features to determine the best cleaning routines. So, for my cleaning tests, I let the Saros 20 use its "AI Smart Plan" to set its suction level and route planning. Not only did I want to see how most people would experience the robot, but I was also curious about how well it would clean in those situations.

Hard Floors

None of my tests using the Saros 20 to vacuum up about 20 grams of flour, rice, or crushed cereal on hardwood floors were particularly impressive during a Smart Plan pass. The rice grains scattered easily from some of the brush movements. So, even though it could pull up the rice grains, it didn't handle lots of them all over the floor. Trying to vacuum up a significant amount of flour left visible smears behind. The cereal test fared best on AI mode, even with whole and crushed Cheerios.

Since I was disappointed with these initial passes, I had the robot return to the area and told it to use Max suction on the "Deep" route, which has a tighter cleaning path. The robot performed much better at cleaning the test area with the customized settings I manually selected.

Carpets and rugs

Similarly, the Saros 20 did a mediocre job when I had it target the same cereal, flour, and rice messes on a short-pile rug. Once I ran it again on Max suction with a tighter route, it did much better. The robot automatically adjusts suction power based on the detected surface. Carpets get more power to help with the embedded dirt.

Like most robot vacuums, even with the suction level turned up to the Max suction of 36,000Pa (a significant boost from the Saros 10R's 20,000 Pa), it is still not as effective as using a stick vac. It couldn't remove the flour from my rug like my cordless Dyson V8 did.

Hair handling

My house has two women and a non-shedding dog (so take that as the context here), but there weren't many strands wrapped around the brush roller after a month of use. In an attempt to make sure the vacuum had plenty of chance to pick up hair, I took some from a hairbrush, and the Saros 20 picked it up without an issue or tangling in the brushroll. This is a similar performance to the previous 10R.

Mopping performance

The mopping performance of the Saros 20 is perfectly fine. It cleans small messes well and will wash over hard surfaces well enough to buff out water spots and other daily wear.

Putting the Saros 20 up to larger messes with 20 grams of those spilled food items was less impressive. It makes me think that robots with two spinning mop pads will begin to fade compared to newer single roller mopping designs , like the Dyson Spot+Scrub AI or even Roborock's take, as seen on the Roborock Qrevo Curv 2 Flow or Narwal Flow 2.

I used jelly, Sprite, and maple syrup in the test area and let them settle a bit. The Saros 20 removed nearly all visible traces of the messes on its first pass. However, after a little time, it became clear that the floor was sticky, even in areas that hadn't had the spills.

The two circular spinning pads don't have the opportunity to be refreshed with clean water during a mopping job, unlike roller designs. So even though the sticky messes were removed, some tackiness could be felt after the fact.

The good news is that the Saros 20 base station can wash the pads with hot water up to 212 degrees Fahrenheit to remove sticky substances. This is a necessary feature to prevent residual effects in future cleanings.

Navigation and obstacle avoidance

One of the Saros 20's advertised highlights is its StarSight 2.0 navigation and object-avoidance system. The first part is mapping, and the second is identifying which items it should go around, of which it claims to be able to identify 300 objects.

On the first run through my house, the robot captured a precise floor plan. The rooms had accurate lengths and details, which allowed me to easily add a couple of no-go zones. I didn't have to re-divide rooms or make any changes to the map other than add my own labels, such as "kitchen," "living room," and "family room."

The actual object avoidance ran into some problems. I placed different shapes, sizes, and colors of faux poop on my kitchen floor, and the Saros 20 ran into both during its targeted test. It did avoid one of the pieces initially, but ultimately would have smeared both if they hadn't been rubber.

While the Saros 20 is suitable for pet owners in a lot of ways because of the great tangle-free brush, what I saw in my tests would make me hesitant to have it run in homes where the pets aren't potty-trained.

In another test, it avoided a USB cable without issue. It identified it as an object, paused in its approach, then cleaned around it. The company advertises that it can identify 300 or more objects. Over a couple of weeks, the robot seemed to improve, but it was never perfect.

Beyond random objects in the middle of the floor, the Saros 20 was very good at navigating furniture, never bumping it more than a light touch.

Where the Saros 20 is improving is in climbing over uneven thresholds. the lips of rugs, or thresholds, or a fireplace lip. I saw its lifting chassis kick in occasionally when the lip of a rug wasn't lying flat, and I can see it navigating most rug styles without getting caught. It was able to climb up onto the lip of my fireplace, too.

Dock and maintenance

When using the AI Smart Plan to handle most jobs, I found I didn't need to replenish the dock's clean water reservoir as often as when I manually set the water level. It did a good job of making the most of its resources.

Both the clean and dirty water buckets pull up from the top and are easy enough to carry. They feel the same as the Saros 10R, and they remain fine. After trying multiple water buckets from various companies, I haven't found any that I'm absolutely delighted with. The reservoirs work fine. The dirt collection tray is easy to pull out and rinse. But all these elements do require maintenance. I got my Saros 20 and its dock to look like it went through battle after several weeks of dedicated testing.

Some companies state how long the mop drying will take, but Roborock offers three options: Eco, Standard, and Deep. For the most part, the low hum of the drying didn't bother me. If I ever got tired of the low hum of the mop drying, it was easy enough to stop in the app. Even doing this a few times, only about an hour into the process, the pads haven't smelled.

Battery life and noise

The Saros 20 has an advertised runtime of up to 180 minutes. In my use, I found this to be pretty accurate, if not a little understated.

Using the Smart Plan, the Saros 20 could clean my entire ~650-square-foot downstairs without stopping to recharge. That includes vacuuming the rugs first without the mopping pads, then returning to the station to reattach the mopping pads to clean the hardwood floor portion. After about 350 square feet cleaned, the unit had run for 69 minutes with 65% of the battery remaining. Battery life will vary depending on suction level and other factors, but the runtime shouldn't be a problem for most moderately sized homes.

Cleaning the mop pads and emptying the robot's debris bin are when the most noise occurs. The self-empty period is over 70 decibels from a few feet away. Thankfully, that only lasts a few seconds. However, it will likely wake a sleeping baby or dog.

Even on the Max vacuum setting, the Saros 20 wasn't overly loud while running. The noise settles into a hum that's generally easy to ignore. The unit moves smoothly and doesn't have a lot of creaking sounds, as the Shark PowerDetect does.

Cons to consider

While the default "AI Smart Plan" cleaning mode works fine for a thought-free cleaning experience, it often left behind visible debris from big messes, requiring a second pass on higher suction or more thorough settings. The default setting should get better over time because the company advertises it learns — and I did see that — but that can be frustrating until it does.

The Saros 20 successfully avoided objects like a USB cable, shoes, and socks, but it ran over simulated pet waste in two out of three tests — even though it flagged it in the app. Puppy and kitty owners should be the most concerned in this area.

The spinning mopping pads on the Saros 20 showed their limits, not quite able to remove sticky residue from my hardwood floors, even though they did remove the actual food particles. As these cleaning robots evolve, it looks like the ones with a single roller mop brush work better because they can be cleaned with fresh water during their mopping jobs.

I tried several of these products. Ones like the Narwal Flow, Dyson Spot+Scrub AI, and Mova Z60 Ultra have all done well for mopping. There is less residue from these units. I haven't tried the Roborock Qrevo Curv 2 yet to comment on its performance, but if you're intent on staying in the Roborock family, that one uses a single rolling mop brush.

Saros 20 vs Saros 10R

I spent over six months with the Roborock 10R and found it to be excellent at general cleaning. It ran on a regular, frequent schedule and encountered few problems with that routine. While I haven't used the Saros 20 for as long, it does provide a similar experience for maintenance cleaning. But where this robot tends to become overwhelmed is in big, extensive messes or spills. You're better off reaching for a stick vac for larger messes; it's quicker too.

The Saros 10R also has a FlexiArm Riser Side Brush that extends farther than the side brush on the Saros 20, but in practice, it's hard to say the newer model has suffered significantly from not having that extra side extension.

Ultimately, the Saros 10R is still a very solid cleaning robot. If you bought it new, I don't see any compelling reason to upgrade to the Saros 20. However, if you want the latest and greatest, the Saros 20 is a very suitable model.

The bottom line

The Roborock Saros 20 is a solid robot cleaning assistant, but with a few quirks and a higher retail price than most people can justify. It's great for casual, day-to-day cleaning because it's thin and nimble. It can scoot around, picking up frequently left crumbs and giving hard surfaces a fresh wipe-down without getting in the way. It can manage most routine upkeep with minimal interference.

However, it still isn't fully capable of using AI to self-determine the best ways to clean all the time. It improved at object avoidance over time and with more data, but it still tripped over the fake pet mess, which is truly unfortunate.

You can use the Saros 20 in all kinds of homes, but people with complex floor plans, tall thresholds, uneven flooring, or lots of furniture will likely get the most satisfaction from this device. It really is nimble.