Which robot vacuums climb the highest door sills?

Door-sill (threshold) ratings, robot by robot.

Updated Oct 23, 2026.

The Roborock Saros 20 has the highest ratings of the robots we track: 1.77 in for a single sill and 3.46 in for two stacked sills. Next come the Dreame X50 Ultra, at 1.65 in single and 2.36 in over two steps, and the Roborock Saros 10R at 1.57 in. Ten of the 16 have a figure between 0.67 and 0.94 in, and the Narwal Freo Z10 Turbo has no published rating.

A white robot vacuum with its front wheels raised as it crosses a step from a wooden floor onto tile
Single sillSill heightTwo stepsTotalheight
Measure from the floor to the top of the sill, on the lower side. With a strip or a second step on top, compare the total height with the two-step rating.
RobotSingle sillTwo steps or stacked
Roborock Saros 201.77 in3.46 intwo stacked sills
Dreame X50 Ultra1.65 in (42 mm)2.36 in (60 mm)two steps more than 1.57 in (40 mm) apart
Roborock Saros 10R1.57 in (40 mm)1.57 in (40 mm)two-step sills
eufy Omni S21.38 in1.65 intwo stacked sills
Roborock Saros 101.18 in (30 mm)1.57 in (40 mm)a 1.18 in (30 mm) sill with a 0.39 in (10 mm) track on top
ECOVACS DEEBOT X11 OmniCyclone0.94 in (24 mm)with the mop on; sliding-door tracks up to 1.57 inNot published
MOVA P10 Pro Ultra0.87 in (22 mm)Not published
Dreame L40 Ultra0.87 in (22 mm)Not published
Dreame D30 Ultra0.79 inNot published
Roborock QV 35A0.79 inNot published
eufy Omni S1 Pro0.79 in (20 mm)eufy calls it obstacle clearance heightNot published
SwitchBot S200.79 in (20 mm)SwitchBot calls it obstacle crossingNot published
ECOVACS DEEBOT N30 PRO OMNI0.79 in (20 mm)Not published
ECOVACS DEEBOT X9 PRO OMNI0.79 in (20 mm)with the mop onNot published
SwitchBot K11+0.67 in (17 mm)Not published
Narwal Freo Z10 TurboNot publishedNot published

Makers measure differently

Dreame’s two-step figure assumes steps more than 1.57 in (40 mm) apart, and Roborock says results vary with conditions.

Find a robot for high sills
Sources