# Are robot lawn mowers worth it?

Source: https://mowandedge.co.uk/blog/are-robot-lawn-mowers-worth-it
Published: 2026-10-12
Publisher: Mow and Edge

**In short:** For many UK gardens, yes. A robot lawn mower keeps grass at an even height by trimming a little and often, which suits a lawn that is open, reasonably level and used by a busy household. It is a poor buy for very small or fiddly plots, steep and broken ground, or anyone who enjoys mowing and wants stripes. You will still need to edge, strimmer and clear up by hand.

Robot mowers have moved from novelty to a normal garden tool, and the choice now runs from compact wired models for small lawns to wire-free machines that steer by satellite or cameras. Whether one is worth it depends less on the gadget and more on your lawn: its size, shape, slopes, and how much you mind finishing the edges yourself. This guide sets out what a robot does well, what it does not do, the honest drawbacks, and a quick test to see whether your garden is a good fit.

## What a robot lawn mower does well

A robot mower works on a schedule, cutting a few millimetres at a time on most days in the growing season. Because each cut removes only the tips, the clippings are tiny and fall back into the sward as a fine mulch, so there is no box to empty. Little and often also keeps you well inside the familiar RHS advice to remove no more than a third of the leaf at any one cut, which is kinder to the grass than a weekly scalp after a wet spell.

The other big gain is time. Once the boundary is set and the schedule is running, the mower handles routine cutting while you are at work or away. Most models are quiet compared with a petrol mower, many can run in the early evening without bothering neighbours, and app control on many models lets you pause or change the schedule from your phone.

- Even height all season without weekend mowing sessions
- Fine clippings left on the lawn, so no collection or green waste
- Low noise compared with petrol mowers
- Scheduling, rain delay and app control on many models
- Usually low electricity use, measured in kWh per season rather than per week

## What you still have to do by hand

A robot is a maintenance mower, not a full gardener. Most cannot reach right up to walls, fences and raised beds, so a strip of longer grass is left at the edges. You will want a strimmer or edging shears every week or two. If the lawn has gone long over a holiday, it is often easier to bring it down with a push mower first, then let the robot take over.

You also need to clear the lawn before it runs. Toys, hoses, fallen fruit, dog mess and garden furniture legs all cause trouble. Blades are small and need replacing regularly, the underside wants a brush off, and the dock contacts need a wipe. None of it is hard, but it is not zero effort.

| Job | Robot mower | Still by hand |
| --- | --- | --- |
| Regular cutting of the open lawn | Yes, on a schedule | No |
| Edges along walls and fences | Partly, on some models | Usually a strimmer |
| First cut of long grass | Not ideal | Push or cordless mower |
| Stripes | No | Mower with a rear roller |
| Clearing toys and debris | No | Yes, before each run |
| Blade changes and cleaning | No | Yes, every few weeks |

Jobs a robot covers and jobs it leaves

[Find a cordless strimmer for the edges](https://mowandedge.co.uk/best/best-cordless-strimmer)

## The real drawbacks

The first is cost up front. Even an entry model costs more than a good cordless mower, and installation, a garage or accessories add to it. Our [cost guide](https://mowandedge.co.uk/blog/how-much-does-a-robot-lawn-mower-cost) explains the price bands in words and the running costs in kWh.

The second is setup. Wired models need a boundary wire pegged or buried round the edge, which takes an afternoon or a dealer visit. Wire-free models skip the wire but need a clear view of the sky for RTK, or good light and clear edges for camera models. Either way, expect a few weeks of small tweaks before it runs without fuss.

Third, security and pets. A robot sits on the lawn every day, so pick one with a PIN code and alarm, and keep it out of view from the street where you can. Hedgehogs are active at dusk and at night in the UK, so many owners and wildlife groups advise not running a robot after dark. Set the schedule for daytime only.

Note: Never lift or tip a robot mower while it is running, and keep children and pets off the lawn while it works. Before cleaning or changing blades, press the stop button, switch it off or disable it with the PIN as the manual says, and wear gloves. Follow the maker's manual for every maintenance job.

## Gardens where a robot is a poor fit

Some lawns simply do not suit a robot. Very small plots of a few square metres are often quicker with a hand or small cordless mower. Lawns cut up by many beds, stepping stones and narrow paths make for a long and fiddly boundary. Very steep or uneven ground can exceed a mower's rated slope, and soft wet clay can leave ruts.

Measure first. The [lawn-area calculator](https://mowandedge.co.uk/tools/lawn-area-calculator) adds up shapes and subtracts beds, and it is worth picking a robot rated comfortably above your real area if the lawn is split into zones or has slopes. If your plot is small, our [robot mowers for small gardens](https://mowandedge.co.uk/best/best-robot-mower-for-small-garden) guide covers compact models.

- Lawns under roughly the size of a large rug, where a hand mower is quicker
- Gardens broken into many small zones joined by narrow passages
- Slopes steeper than the mower's stated maximum
- Heavily used lawns with toys and play equipment left out daily
- Front gardens open to the street with no way to secure the mower

## A quick test before you buy

Answer these honestly. If most answers are yes, a robot is likely worth it. If several are no, a good cordless mower may serve you better. Our [robot mower vs cordless mower](https://mowandedge.co.uk/blog/robot-mower-vs-cordless-mower) comparison goes through the trade off in more detail.

1. Is the lawn mostly open, with few islands and no very narrow passages?
2. Is any slope within the stated limit of the models you are considering? The [slope guide](https://mowandedge.co.uk/best/best-robot-mower-for-slopes) explains percentages.
3. Is there a power socket within reach of a sensible dock position?
4. Can you keep the lawn clear of toys and clutter on mowing days?
5. Are you happy to edge by hand every week or two?
6. Do you value time saved more than the cost up front?

[See our best robot lawn mowers](https://mowandedge.co.uk/best/best-robot-lawn-mower)

## Frequently asked questions

**Are robot lawn mowers any good on UK lawns?** Yes, on lawns that are reasonably open and level. Frequent light cuts suit cool season grasses, and many models handle damp conditions. They struggle on very steep, rough or heavily cluttered lawns.

**Do robot mowers give a good finish?** They give an even, carpet like finish with no clippings to rake, but no stripes. The edges usually need a strimmer. If stripes matter to you, a mower with a rear roller is the better tool.

**How long do robot lawn mowers last?** Many owners keep one for years with regular care, new blades and, eventually, a replacement battery. Life depends on the model, use and winter storage, so check the warranty and parts availability before buying.

**Are robot lawn mowers safe around pets?** Blades are small and stop when the mower is lifted or tilted, but you should still keep pets and children off the lawn while it runs. Avoid night schedules to protect hedgehogs.

## Buying guides on this topic

- https://mowandedge.co.uk/best/best-robot-lawn-mower
- https://mowandedge.co.uk/best/best-robot-mower-for-small-garden
- https://mowandedge.co.uk/best/best-robot-mower-under-800

## Sources

- [RHS: lawns](https://www.rhs.org.uk/lawns)