Segway Navimow X3 Series: two-minute review

The Segway Navimow X3 Series robot lawn mowers are built specifically for sizeable lawns. And when I say sizeable, I mean sizeable – the range covers lawns from 0.5 acres / 1,500 square meters right up to a massive 2.5 acres / 10,000 square meters. To make them suitable for such vast spaces, these bots are designed to operate quickly, efficiently and accurately, with batteries capacious enough to allow for long mowing periods, without having to make the arduous journey back to the dock to recharge.

To see if this lawnbot could deliver on these promises, I sought out the largest yard I knew of. The lawn at my sister's home, measures around 1,000 square meters / 0.25 acre (although Segway sent me the X350, which is designed for even larger areas still). The first thing I was struck by is the speed of the mower. It rolls along at quite the pace, navigating with confidence, even when traversing under trees.

The lawnbot itself is really quite large (and the same size as the other X3 Series models), but if you have a lawn big enough to need one, that's not going to matter so much. It feels solid and high quality, with a friendly orange and grey color scheme and slightly retro-feeling dot-matrix screen to provide key information.

A big reason as to why the experience of using the Segway Navimow X3 Series is so enjoyable is down to the design of the companion app. It's intuitive to use, walking you clearly through all the steps required to complete each process, and providing background information – rather than leaving you to figure things out by yourself. There are plenty of setting options to explore, and planning a schedule is straightforward.

In terms of performance, I had no issues. Throughout the test period, the bot behaved exactly as I'd hoped, mowing neatly and within boundaries, taking a logical route and never missing any spots. It also reliably avoided medium (soccer ball-sized) obstacles, although it did mow over a satsuma-sized ball (understandable, given it was sitting below camera height). Since this bot is two-wheel drive rather than four-wheel, it might struggle with especially rough terrain; but for the average yard, it will be absolutely fine.

Overall, a very strong recommendation for those looking for an efficient, fuss-free mower to take care of larger lawns. That's the short version; read on for my full Segway Navimow X3 Series review.

Segway Navimow X3 review: price & availability

• List price: from $2,299 / £2,199
• Available: US, UK, AU
• Launched: Spring 2025

The Segway Navimow X3 Series was unveiled in spring 2025, and is available to buy in various countries including the US, UK and Australia. You can only purchase direct from Segway Navimow in the US, and in general these lawnbots aren't stocked widely online (you won't be adding one to your Amazon Prime order). Instead, you might need to check the Segway Navimow site for distributors local to you.

When it comes to pricing, brace yourself: the Segway Navimow X3 Series doesn't come cheap. The cheapest in the lineup costs $2,299 / £2,199 at list price, and the priciest is $4,999 / £4,299. That's a significant investment, and if you don't have a large yard – or a yearning for ultra-speedy mowing – there are plenty more affordable alternatives. However, for those in need of large-scale mowing, the Navimow's pricing isn't too far away from what you'd pay elsewhere on the market.

Let's say you want something for a 1-acre / 3,000m² lawn. The Mammotion LUBA 2 AWD 3000 costs $2,499 / £2,549 at list price, and the Navimow X330 is $2,799 / £2,599. The LUBA 2 has slightly more advanced features all round, including all-wheel drive and two cutting decks, which makes it a better-value buy at full price. Nevertheless, both are excellent, advanced, high-quality lawnbots.

Overall, my experience with the Navimow X3 series was extremely positive, and it felt well built and thoughtfully designed, so I think for large lawns it's worth the investment.

• Value for money score: 4 out of 5

Segway Navimow X3 specs

Segway Navimow X3 review: design

• Available in versions with different batteries for different lawn sizes
• On-bot info via a screen, and cameras on three sides for obstacle avoidance
• Comes with RTK receiver (option to add a second) and charge station

The Segway Navimow X3 Series is a big bot for big lawns. There are a few options in the lineup, all of which are identical in design and specs, except the ones at the top end of the range have a bigger battery and as such are suitable for larger areas. These are the options:

Moving on to the lawnbot itself, and the brand has opted for a friendly look, with a dark gray and bright orange color scheme, and a dot matrix screen to provide key information in real time. On test I found this limited in its practical usefulness, although it is quite fun. There are physical buttons for Go, On/OK and Return to charge, plus a big emergency stop button. However, for the most part you'll be controlling the bot via the companion app, which I'll cover in detail in a separate App section below (there's also support for voice control via Alexa or Google Home, if you prefer).

The Navimow X350 is rather large, and for the times you might need to manually maneuver it, Segway has added a big handle around the rear of the bot. Unfortunately, there's no grip area at the front – so unless you stick your hand in the charge slot, which goes against an important lesson I learned as a toddler, you'll need to make do with crouching and dragging rather than picking it up.

It's fairly common for modern lawnbots to come equipped with a camera for object identification and avoidance, but the X3 Series has not one, but three: one at the front and one on either side, delivering a 300-degree field of view. Alongside one of the side-mounted cameras you'll find an Expansion Bay section, where you can attach add-ons. There's an edge trimmer attachment that already exists in a few countries (I didn't test this), and open API access means if you have the skills, you can create your own additions.

Also hidden somewhere on the top is a compartment for a tracker, should you wish to add one for added security reasons (there's also an out-of-bounds alarm, lift alerts and GPS tracking to guard against theft).

There are two main wheels, plus two smaller wheels at the front. Since this bot is a two-wheel drive machine, it isn't designed for very uneven terrain, although it can still handle slopes up to 50%, and will be more than up to handling the average yard (or football field).

Flip it over and you'll find the cutting deck, which consists of six blades mounted on a rotating disc, which can be raised or lowered automatically via the app (it can cut at heights of 0.8-2.8in / 2-7cm). The whole thing is designed to avoid the mechanism becoming clogged up with cuttings. Like most lawnbots, there's no grass collection here – instead you're meant to use it regularly enough that the tiny cuttings end up mulching back into the lawn. The Navimow delivers a generous cutting width of 9.3in / 23.7cm.

Additional components

The X3 Series is at least partially reliant on satellites for navigation, so in the box you also get an RTK receiver to improve the accuracy of the satellite information. You'll need to find a good spot for this – ideally it needs to sit somewhere high up, with a wide, uninterrupted view of the sky. Since I was only borrowing this machine, I just stuck it on the provided lawn-mount spike, and it worked remarkably well even in this sub-optimal position, as you'll learn in the Performance section. You can purchase a secondary antenna to act as backup if you have an especially large lawn.

You're also provided with a charge station, where your lawnbot will return to juice up. This needs to sit on flat ground, with access to a power source.

The lawnbot is IP66 rated, which means it's resistant to both water (everything apart from complete submersion) and dust. Even so, I tend to think a plastic garage roof is a good idea for a little extra protection from the elements in the long term.

Features

Let's look quickly at what's going on under the hood. Like most modern lawnbots, the X3 Series doesn't require boundary wires, but instead uses a combination of RTK satellite navigation, cameras and sensors to find its way around (here's more on how lawnbots navigate, if you're interested).

To ensure the bot always knows where it is, even when being used on a palatial lawn, Segway has introduced a number of navigation upgrades. The RTK system has been improved and can apparently deliver 40% better observation, to keep it moving in potential blind spots such as narrow pathways or under rooftops.

Inside, two complementary wayfinding systems work together to help the bot find its way about: VSLAM, which relies on recognizable visual cues; and VIO, which is great for new, featureless areas. All of that, added to the wide field of view provided by the three onboard cameras, should mean this bot is an absolute pro when it comes to navigation.

• Design score: 5 out of 5

Segway Navimow X3 review: performance

• Neat, thorough and very speedy mowing
• Confident, accurate navigation, even under trees
• Strong obstacle avoidance, although can't spot very small items

Let's start with setup, which I found fairly painless. There's a bit of self-assembly required of the base station and RTK receiver, but if you hook up the app first then it walks you through the process quite clearly (there's also a paper instruction booklet, if you prefer). The app also guides you through the mapping process.

My test lawn has unclear boundaries and tree coverage, so I opted to create a map manually, by remote-controlling around the perimeter of the area I wanted mowing and then editing the results in-app. I found the process straightforward. If you have a very simple lawn, you'd use AI Assist Mapping, where the bot will automatically map the area for you.

The first thing I was struck by when I started mowing was how speedy the Navimow proved. I was promised efficiency, and the Segway Navimow has delivered. The X3 rolls confidently along at an impressive pace compared to other bots I've tested.

I mostly used the Standard speed for my tests, but bumped it up to Efficient at one point but couldn't really notice a difference. The app states that it's 0.2m/s faster in this mode, which would be noticeable over time if you were mowing an especially large lawn.

I was also very impressed by navigation. My test lawn has a number of large trees, which I thought might cause the X3 to get lost – especially given the RTK receiver was just stuck in the ground, rather than elevated above the trees and buildings, as it really should be. However, all the test-runs were free of issues. The bot made its way around confidently, covering the full lawn in a logical pattern. It also accurately avoided a no-mow zone I'd set up in the center of the lawn, on a patch of ground that had recently been re-sown with grass seed. I guess whatever Segway Navimow has done to "improve the RTK performance by 40%" has worked.

I also ran a couple of specific object avoidance tests by placing large (a toddler's ride-on car), medium (soccer ball) and small (a tangerine-sized ball) obstacles in the X3's path. It had no issues spotting the car or football, duly skirting around each one, even when I kicked the football about to try to confuse it, but the smallest ball met a grizzly end beneath the X3's blades.

We've yet to test a lawnbot at TechRadar that can spot small obstacles such as this, so it isn't a particular failing on Segway Navimow's part. However, it's worth noting if you have, for example, a dog that likes to poo in your yard, and you don't want to spend an afternoon cleaning it out of wheel crevices.

• Performance score: 4.5 out of 5

Segway Navimow X3 review: app

• Lots of useful explanations and info, with diagrams
• Plenty of fine-adjustment options
• Well laid out and easy to navigate

From the off, I was super-impressed with the Segway Navimow app. It provides plenty of information and clear explanations – often with diagrams – to walk you through everything from setup to how to map. Other lawnbot apps I've tested use opaque language and leave you to mostly figure things out for yourself, which can be especially confusing if it's your first robot lawn mower.

Here, however, everything is logically laid out and easy to navigate. There are also plenty of options to fine-tune your mowing. There's a straightforward schedule-maker, where you can select days, times and zones for cutting. You can also choose between three mowing speeds (Quiet, Standard and Efficient) and grass length (20-70mm, in increments of 5mm).

There's a section for Map management, where you can split, add or remove sections, or add no-go zones (or, as Segway Navimow whimsically calls them, "BioLife Islands"). It will let you select where you want to start on the map, with the bot cleverly driving itself over to your chosen spot, and then the app will guide you to drive the new boundary line using remote control. I found this process straightforward and logical – again, not always a given.

Segway Navimow also offers a range of "Advanced" features, too. There's an "Animal friendly" mode that will see the bot stop if it spots an animal and take a new route so as not to disturb it, rather than just skirting around it. You can also toggle on "Traction control" for particularly muddy or challenging terrain.

• App score: 5 out of 5

Should you buy the Segway Navimow X3 Series?

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Segway Navimow X3 review: alternatives to consider

How I tested the Segway Navimow X3

I tested the X350 model of the Segway Navimow X3 Series. I used it for several weeks in the garden of my sister's home. The test lawn measures around 1,000 square meters, and has unclear borders and several large trees. I set up the bot myself from scratch, following the instructions in the app, including constructing the charge station and RTK receiver. I mapped the lawn into different mowing zones and added no-mow areas. I assessed the lawnbot based on the neatness and speed of mowing, accuracy of navigation, and general ease of use. I also explored the different options in the app to see the extent to which I could fine-tune settings, and ran object avoidance tests using different-sized obstacles. I then compared all of my findings to other lawnbots I've used, while also weighing everything up against the price to gauge whether the bot offers good value for money.

Read more about how we test

• First reviewed August 2025