Stairs are the enemy of robot vacuums everywhere. There isn’t currently a single robot vacuum on the market that can climb a flight of stairs without human assistance. Even the best robot vacuums we recommend for their ability to cross obstacles, like the Dreame X50 Ultra and Roborock Saros Z70, can only handle thresholds between two and three inches.
Eufy’s Marswalker may be the first robot vacuum to truly be able to tackle this problem. It’s a robot vacuum that looks a bit like a wheeled Mars rover with a tracked drive, the “smart crawler platform,” that allows it to ascend and descend staircases. Eufy demonstrated the feature for me in a video, and describes the platform as “four independently controlled arms” with a track-drive system that grips each step as it climbs. It’ll also be at Eufy’s IFA booth in Berlin for a live demo.
In the meantime, here’s what we know about it.
Eufy Marswalker
Now, the Marswalker doesn’t clean the staircase itself while climbing, but it can get to a different floor without human assistance, which is huge. Eufy says the Marswalker is fully autonomous and will automatically detect when one floor is finished being cleaned and will climb to the next one without human intervention.
Eufy says the robot will automatically recognize common stair types, including straight, L-shaped and U-shaped stairs, as it builds a 3D map of the entire home. After traveling up a flight of stairs for cleaning, the Marswalker can automatically return to its dock to empty and recharge.
While details are scarce, from the pictures, it appears that the Marswalker is a shell that fits over an existing robot vacuum, rather than a standalone robot. Eufy notes that the Marswalker is compatible with its new Omni S2 robot vacuum, which the company claims is the first with an intelligent aromatherapy system, releasing fragrances like bamboo, sage, bergamot, lychee, citrus and basil as it cleans your home.
In terms of specs, the Marswalker has the same 3D mapping capabilities and AI features as the Omni S2. Other details, including pricing, aren’t yet available, but the Marswalker should be released in Spring 2026, likely making it the first true stair-climbing robot vacuum on the market unless a competitor beats Eufy to the punch.
This is definitely one of the products I’m most excited about. Using a robot vacuum in a multilevel home is a huge pain. Many robot vacuums offer multilevel mapping, but they don’t provide a solution for getting it from one floor to another. You either carry the unit up yourself or you have to buy a second one and have each one live on its respective floor. Neither is a great solution. If the Marswalker can change that, it could very well be the biggest innovation the robot vacuum market has seen in a long time, beating out the Roborock Saros Z70’s mechanical arm.
Eufy RoboVac Omni S2
The aforementioned Omni S2 is Eufy’s newest and top-tier robot vacuum. It comes with 30,000 pascals of suction (100 air watts), is capable of both vacuuming and mopping and can exert 15 newtons of downward pressure while mopping. It boasts advanced navigation, with a 3D ToF sensor, RGB camera and LED lights. It can recognize more than 200 obstacles and identify more than 40 types of dirt. It can also handle obstacles of 4.2 centimeters for double thresholds and 3.5 centimeters for single thresholds, though on its own it won’t be able to climb stairs.
Naturally, you get a self-emptying, self-cleaning and auto-refilling dock that cleans and sterilizes the brush rollers between uses and uses fresh electrolyzed water to clean your floors. All of this makes it a fairly potent robot vacuum, though I’m most curious to see how it works with the Marswalker.
The Omni S2 is expected to be available in the US starting in January 2026 with a price of $1,599.
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