The best time to buy a robot lawn mower in the UK is usually late November or the end of winter: prices are lower around Black Friday, and buying before March means it's ready for the first cut of spring. The worst time, on price, is often April and May, when everyone wants one at once. But the right answer also depends on the launch cycle, how you'll install it and whether it's a present.
Our advice is based on manufacturer launch calendars, price history on Amazon.co.uk, UK consumer law and installation requirements, not hands-on testing.
The robot mower year at a glance
| Period | Prices | Choice | Verdict |
|---|---|---|---|
| November (Black Friday, Cyber Monday) | Often at or near the year's low | Current range, stock clearance | Good for value; install later |
| December to February | Mixed; some post-Christmas sales | New ranges announced (January) | Good for planning and installing |
| March to May | Usually highest | Newest models arrive | Best choice, weakest prices |
| June to July (Prime Day) | Strong deals on some models | Full range | Good if you missed spring |
| September to October | End-of-season reductions | Range thinning out | Good for price, little mowing left |
The pattern varies by model, so before buying check that specific product's history in Keepa or CamelCamelCamel. If you're shopping in November, our robot lawn mower Black Friday guide explains how to check whether a deal is real.
The launch cycle: what happens to last year's models
Robot mower brands work on an annual rhythm. New ranges are shown at CES in Las Vegas in early January (in 2026, Segway Navimow unveiled five new lines there and formally launched its 2026 range in February), then reach UK shelves between late winter and spring, ready for the first cuts in March and April.
The outgoing models don't vanish overnight. Typically they:
- Stay on sale alongside the new ones for a season, often at lower prices, especially from Black Friday onwards.
- Keep receiving firmware updates and app support from the big brands, though the newest features may stay exclusive to the new range.
- Keep their spares (blades, wheels, batteries) for years from established names; with newer or smaller brands, check before buying.
So a previous-generation model at a genuine low price is often a better buy than a new model at launch price. The exception: if the new generation fixes something that matters for your garden, such as navigation under trees without an RTK antenna, which is where the 2026 ranges made the biggest jump. Our RTK vs LiDAR vs vision guide explains which technology suits which garden.
Installing in winter vs spring in the UK
Buying in November doesn't mean installing in November. Here's what each approach involves:
Boundary wire models
Laying wire needs ground you can peg into. A dry spell in late winter (February or early March) is often ideal: the lawn is short and dormant, so the wire is easy to see and peg, and the grass grows over it within weeks once spring arrives. Avoid frozen ground (pegs won't go in) and waterlogged clay (you'll churn the lawn). In autumn, wire laid before the leaves fall can be buried under them and nicked by a rake.
RTK models
You can mount the antenna on a dry day in winter, but mapping is best left until the lawn edges are clearly visible and the ground can take the mower's weight without rutting. Plan where the antenna goes now: it needs open sky and a power socket within reach.
Vision and LiDAR models
Little physical installation, so there's no rush. Map the lawn in spring when edges are defined and the grass has started growing. Vision models in particular struggle with low light and wet, flattened grass.
A robot mower should not mow a dormant or frozen lawn. In most of the UK it goes out from March (southern England) to April (Scotland and upland areas). See our autumn and winter guide for the last cut and storage.
Warranty and your rights: when the clock starts
This is the part most people forget when they buy in November and open the box in March:
- Manufacturer guarantees usually run from the purchase date on your receipt, not from the first cut. Bought in late November and first used in March, you've used around four months. Some brands extend the guarantee if you register the product online, so check the maker's terms.
- The 14-day cancellation period for online purchases (Consumer Contracts Regulations) and the 30-day right to reject faulty goods (Consumer Rights Act 2015) both start at delivery.
- That's why, even if you install it in spring, you should unbox it straight away: check every part, charge it, switch it on and pair it with the app. If something is wrong, you're still within the short-term window.
As a Christmas present?
A robot lawn mower can be a brilliant present, but only for the right person and garden. It makes sense for:
- Parents or grandparents with a lawn that's becoming hard work to mow, who are comfortable with a phone app or have someone nearby who is.
- Busy households with a regular, mostly flat lawn who'd rather spend weekends on something else.
- Gadget-minded gardeners who have been talking about one for a while.
It makes less sense for people who enjoy mowing, renters who may move before spring, tiny or heavily planted gardens, and lawns with steep banks or ponds near the edge, unless you've checked the model handles them.
How to give it well: gift now, install in March
- Measure first, discreetly if you must: lawn area, steepest slope, narrowest gate or passage, and where the charging station could go near a socket.
- Pick the technology for their garden, not yours: a vision or simple wire-free model for someone who won't want to lay wire; a wired kit if you'll be there to help.
- Order with a gift receipt and check Amazon's holiday returns terms for 2026; in recent years Amazon has extended its returns window for purchases made in the run-up to Christmas, but confirm the dates when you order.
- Test it before wrapping if you can, or ask them to unbox and charge it within days, for the reasons above.
- Add an "installation voucher": a promise to come and set it up together on a dry weekend in March. For many people that's the part they'll value most.
A note on hedgehogs: if the recipient's garden has them, set the schedule to daylight hours only. It's a simple setting and worth mentioning when you hand it over.
Models that suit a winter purchase
Each of these is available on Amazon.co.uk and suits buying now and installing in spring. Check today's price before deciding.
| Model | Best for | |
|---|---|---|
| MOVA ViAX 250 | Small lawns, narrow side return | Check price |
| Segway Navimow i105E | Entry wire-free (RTK), open lawns | Check price |
| Bosch Indego S+ 500 | Up to ~400 m², full kit in the box | Check price |
| Gardena SILENO City 500 | Wired, small-medium lawns | Check price |
1. MOVA ViAX 250
Who it's for: Small lawns reached through a narrow side return, where you want wire-free with almost no set-up. Skip it if: you need GPS tracking out of the box or mow in poor light.
- Wire-free: no RTK, no posts, dual-camera vision
- Fits through 60 cm passages
- Slopes up to 40%
- Avoids 300+ obstacle types
- Anti-theft alerts; GPS tracking needs an optional module
- The simplest way to go wire-free on a small lawn
- Fits down a terraced or semi-detached side return
- Person and pet detection
- Vision only: less dependable in poor light
- GPS tracking costs extra
Buying it now: For a present: wire-free and vision only, so the recipient can be mowing in March with very little set-up. Check their side return is at least 60 cm wide.
Check today's price on Amazon →2. Segway Navimow i105E
Who it's for: Open lawns of around 500 m² with a clear view of the sky. Skip it if: your lawn sits under mature trees or hemmed in by tall walls and houses.
- Wire-free: RTK + vision (EFLS 2.0)
- Recommended for around 500 m² on the UK listing
- GNSS antenna kit included
- 140° camera recognising 20+ obstacle types
- Mapping guided from your phone
- One of the most affordable wire-free mowers from an established brand
- No pegs, no wire
- Camera backs up navigation near trees and in passages
- Antenna needs open sky and a mains point nearby
- Not built for big lawns
Buying it now: For a present: the antenna and mapping can wait until spring. Check where the antenna could go: it needs open sky and a power socket within reach.
Check today's price on Amazon →3. Bosch Indego S+ 500
Who it's for: Regular lawns up to around 400 m² where you want parallel-line mowing and a complete installation kit. Skip it if: you have long, steep banks or simply refuse to lay a wire.
- Boundary wire (150 m of wire and 200 pegs included)
- For lawns up to 500 m²
- LogiCut: maps the lawn and mows in parallel lines
- 18V 2.5Ah POWER FOR ALL battery
- App, Alexa, Google Assistant and IFTTT
- Neat, striped finish and less time on the lawn
- Battery shared with the POWER FOR ALL tool range
- Nothing extra to buy for installation
- Still needs a boundary wire
- 19 cm cutting width is narrow for its maximum area
Buying it now: For a present: the complete wire-and-pegs kit means nothing else to buy. Offer to help lay the wire on a dry weekend in late winter.
Check today's price on Amazon →4. Gardena SILENO City 500
Who it's for: Lawns up to about 400 m² with gentle slopes, for someone happy to lay a wire once and forget it. Skip it if: your lawn has banks steeper than 25% or you want app control from anywhere.
- Boundary wire
- For lawns up to 500 m²
- Slopes up to 25%
- Husqvarna-group engineering, Gardena spares
- Proven boundary-wire technology
- Spares and blades easy to get in the UK
- No satellite or network dependence
- Wire to lay, ideally before the ground firms up in spring
- Modest slope rating
Buying it now: For a present: a safe choice for a conventional, gently sloping lawn. Make sure the recipient's lawn is under about 400 m².
Check today's price on Amazon →Still deciding between technologies? Start with boundary wire vs wire-free or our best value robot lawn mowers.
See robot lawn mowers on Amazon →
Keep reading
Robot lawn mower Black Friday 2026 guide → Robot mower in autumn and winter → How to choose a robot lawn mower → Best wire-free robot mowers →Frequently asked questions
What month is best to buy a robot lawn mower in the UK?
For price, November (Black Friday and Cyber Monday) and late-season sales are usually best. For choice, March, when the new models arrive. Buying in late winter is a good compromise: decent prices and time to install before the first cut.
Can I install a robot mower in winter?
You can lay boundary wire or mount an RTK antenna on a dry day when the ground isn't frozen or waterlogged, but don't start mowing a dormant lawn. Mapping is best done in spring when edges are clearly visible.
Does the warranty start when I buy it or when I first use it?
Manufacturer guarantees normally run from the purchase date on your receipt. Your 14-day cancellation period and 30-day right to reject also start at delivery, so unbox and test it straight away even if you install it later.
Is a robot lawn mower a good Christmas present?
For someone with a regular lawn who dislikes mowing or is finding it harder, yes. Measure their lawn and slopes first, choose a model that suits their garden and offer to help set it up in March.
Will last year's robot mower still get updates?
From established brands, yes: outgoing models usually keep firmware updates, app support and spares for years. Newer brands vary, so check before buying.
Are robot mowers cheaper in spring?
Rarely. Demand peaks from March to May, so prices are typically at their highest. Spring launches occasionally come with introductory offers on new models.