Worth it if the lawn is simple and you value not mowing. Poor value if the lawn is small, fragmented and full of obstacles — which is what most small lawns are.
What a robot is actually good at
Cutting a little, every day, on ground it has already learned. That regime suits grass: a lawn that is never allowed to grow long is never shocked by being shortened, and the finish after a few weeks of it is better than a fortnightly mow produces.
It is also good at removing a recurring decision. The machine goes out when the schedule says so, and the clippings never have to go anywhere.
What a small lawn costs it
Area is the figure the listings lead with, and it is the least relevant one here. A robot’s difficulty is perimeter and obstacle count, not square metres. Two hundred square metres in one clean rectangle is an easy installation. The same area split into three sections joined by a paved path, with a trampoline, a raised bed and a washing line post in it, is a hard one — and the second garden is the more common one at that size.
The specific things that cost a small robot its afternoon: narrow passages between sections, which it must find; slopes at the edges, where it loses traction on damp grass; and the border itself, because no robot cuts right to a hard edge. A strimmer or a pair of lawn shears remains part of the job.
The figures that settle it
The stated area is an assumption with no publisher, derived from a duty cycle the maker chose, and it has its own page here. The useful figures are the slope the maker states, the cutting width — which is small on every robot, and is why they run so long — and whether the machine needs a boundary wire or navigates without one.
Wire-free machines have changed this shelf substantially, and they change what a complicated garden costs to set up. They do not change what a narrow passage costs to cross.
How this site handles it
The robot family here prints the stated area as a maker’s assumption, and prints alongside it the cutting width, the slope figure, the navigation method, whether a boundary wire is required and what the maker says about rain. Those are the things that differ between machines on the same shelf, and the area figure mostly is not.
The questions that keep coming in
Does a robot cut better than a mower?
It cuts less at a time, far more often. The result on an established lawn is usually more even than fortnightly mowing, because the grass is never allowed to get long. On a lawn that is already long when the machine arrives, it is worse until a conventional mower has been over it once.
What happens to the clippings?
They stay. Every robot on this shelf mulches by design — the cut is small enough to fall into the sward — and none of them collects. If you want the clippings off the lawn, a robot is the wrong machine.
Last reviewed 26 September 2026