Robot mower theft and security

Robot mowers are an easy target on paper: they're worth hundreds or thousands of pounds, weigh roughly as much as a suitcase, and spend hours alone on the lawn, sometimes in an unfenced front garden. Manufacturers have responded with layers of security. None of them makes a mower impossible to steal, but together they make it much less attractive to a thief and much easier to recover.

This guide covers the main features, how to set them up well, and the practical and insurance steps that matter just as much. We can't give reliable theft statistics for the UK, because no public source records robot mower thefts separately, so this is about reducing risk rather than quoting odds.

The layers of protection

PIN code

Almost every current robot mower has a PIN code lock. Without the code, entered on the mower's keypad or through the owner's app, the mower won't run. Newer app-controlled mowers often also tie the machine to the owner's account, so a thief can't simply pair it with a new phone.

A PIN stops the mower being useful, which cuts its resale value. It doesn't stop the mower being picked up and carried away, and some thieves won't know it's locked until later. Change the default code if your mower ships with one, and don't use an obvious number.

Alarm

Many mowers sound a loud theft alarm if they're lifted without the PIN, and send an app notification if they're online. Husqvarna, Segway Navimow and STIGA list alarms on most of their current models, for example. An alarm is a deterrent: it draws attention and encourages a thief to drop the mower. It won't help you find a mower that has already gone.

Check whether the alarm is on by default. Some apps let you set it to trigger when the mower is lifted, when it leaves the boundary, or both.

GPS tracking over 4G

GPS theft tracking shows the mower's location in the app. It needs two things: a satellite receiver, which many wire-free mowers already have for navigation, and a mobile data connection so the mower can report where it is once it's out of Wi-Fi range. That connection is usually built-in 4G or an add-on module.

The data plan matters. Brands handle it differently:

• Segway Navimow includes 12 months of 4G on the i2 AWD.
• Mammotion includes 36 months on the LUBA mini 2 AWD.
• STIGA includes 120 months on its A v range.
• Husqvarna's X-series NERA models, such as the Automower 430X NERA, have built-in cellular connectivity; some of its cheaper models take an optional connectivity module instead.
• Worx lists a Find My Landroid module as an option for wired models such as the Landroid M, though it isn't currently sold on its UK store. For the Landroid Vision Cloud, which has no 4G in its UK version, Worx says the mower can still be located from the app; it doesn't explain how that works once the mower is out of Wi-Fi range, so ask before relying on it.

Before you buy, check what's included, how long for, and what it costs to continue. As an example of renewal costs, Mammotion's UK store lists a 12-month 4G service at £49.90 at the time of writing. Tracking stops working when the data does. Our network RTK and 4G guide covers subscriptions and UK coverage in more detail.

A tracker is only as useful as its signal. A mower in a van or a metal-roofed unit may not get a satellite fix or a mobile signal, and a determined thief may try to remove or disable it. Treat tracking as a good chance of recovery, not a certainty.

Geofence alerts

A geofence is a virtual boundary around your property. If the mower crosses it, the app sends an alert, which is usually faster than waiting for the alarm to be reported. Set it close to your garden boundary, and make sure notifications from the app are allowed on your phone. It needs the same GPS and data connection as tracking.

Wired mowers

Wired mowers generally won't run away from their own perimeter wire and charging station, which makes them less useful to a thief even without a PIN. Many still have PIN codes and alarms, and some models add GPS tracking.

Practical steps that help

Technology is only part of it. These cost little or nothing:

• Record the serial number and keep your receipt. Photograph the mower and the label under it. Police can only return recovered property they can identify.
• Register the mower with the manufacturer and, if you like, on a property register such as Immobilise, which UK police forces use to trace owners of recovered items.
• Mark it. A postcode in UV pen, or a visible security sticker, makes resale harder. Don't block sensors or cameras.
• Think about the front garden. Mowers in open front gardens are the most exposed. If you can, schedule the front lawn when someone is at home, and avoid leaving the mower out overnight there.
• Bring it in when you're away. If you're going on holiday in the growing season, a neighbour popping round is more useful than you'd think. Out of season, store it indoors (see our winter storage guide).
• Use a garage, but don't rely on it. A mower garage hides the machine from casual view but doesn't lock. See do you need a robot mower garage?.
• Keep the app up to date so security fixes and alarm settings apply.

A few brands sell add-on anti-theft kits for mowers that lack tracking; Kress, for example, lists one with 4G and one without. Whatever you add, the mower still leaves its dock to work, so the PIN, alarm and tracking do most of the job.

Insurance

Most people assume home contents insurance covers a robot mower. It often does, but the details matter:

• Items in the garden. Many policies limit cover for property left outside, or cover it only up to a set amount. A robot mower can easily exceed that limit.
• Locked storage. Some policies only cover garden equipment stolen from a locked shed or garage, not from an open lawn. A mower that lives on its charging station may not qualify.
• Single-item limits. Expensive items often have to be listed individually on the policy.
• Accidental damage and third-party liability. If the mower damages someone else's property, or someone is hurt, check whether your policy covers it.

Read the garden, outbuildings and high-value items sections of your policy, or ask your insurer directly: "Is a robot lawn mower worth £X covered against theft from my garden when it isn't locked away?" Get the answer in writing if you can. Some specialist gadget or garden-equipment insurers also cover robot mowers.

Which features to look for

If theft is a real concern where you live, prioritise:

1. A PIN code or account lock (almost universal).
2. An alarm that triggers when the mower is lifted.
3. GPS tracking with built-in 4G, and a clear answer on how long data is included.
4. Geofence alerts in the app.

Mowers with built-in 4G and tracking tend to be mid-range and above. For cheaper mowers, the practical steps and insurance matter even more. You can compare connectivity on each model's spec table, and our best robot mowers pages note security features where they stand out.