I finally found a robot lawnmower I’d trust with my yard

Robot lawnmowers are yet bully capable to return a batch of activity retired of maintaining a yard, but they’re still not set-it-and-forget-it machines. If you don’t want these autonomous cutting machines to tear up your section aliases spell roaming successful your neighbors’ yard, you’re still going to request to support an oculus connected them. But pinch immoderate oversight, they tin return a large chore disconnected your hands.

This summertime I tested 5 bots connected my flat, three-quarter-acre, coastal South Carolina spot pinch sandy soil, centipede grass, and tons of trees. Things went overmuch amended than last year’s tests and tribulations, acknowledgment to immense improvements successful navigation and maneuverability. Basically, they stopped getting stuck. My section has ne'er looked better, and my spouse — who had sworn disconnected robot lawnmowers aft a user-error wounded — is now a convert. His riding lawnmower has been idle for complete a month.

The consistency of robot mowers is impressive. Running regular and shaving conscionable millimeters astatine a time, these mowers person created a noticeably lusher lawn. I walked retired connected it barefoot this greeting — thing I’ve ne'er done before. The champion portion is that they activity softly astir the clock, without bothering my pets, the wildlife, aliases the neighbors. I besides emotion the professional-looking section lines they make.

The cardinal upgrades this twelvemonth are network RTK navigation, fallback navigation systems, and improved all-wheel-drive to tackle rougher terrain.

RTK — real-time kinematic positioning — is the outer positioning tech astir automowers switched to complete the past fewer years arsenic they’ve ditched bound wires. It uses stationary ground-based reference stations (antennas), on pinch GPS, to supply very precise location data, down to a centimeter aliases two. It’s utilized for surveying, drone navigation, and thing that needs that good level of precision.

Every mower I tested, isolated from the Lidar-based Dreame, comes pinch its ain RTK antenna that needs to beryllium installed successful your gait pinch a clear position of the sky; trees, a neighbor’s house, aliases your ain roofline tin each artifact the signal. In my erstwhile testing, I didn’t get a azygous RTK mower to tally successfully successful my backyard, wherever I person very spotty GPS coverage.

This caller harvest each now offers NetRTK arsenic an option. This taps into a network of existing RTK reference stations done a unreality connection, and requires a Wi-Fi aliases 4G relationship connected the mower. Most worked retired of the container without maine needing to instal the antenna, but you’ll request to cheque if your location is covered, arsenic coverage varies.

RTK mowers now besides usage a secondary navigation tech specified arsenic lidar aliases vSLAM to support connected way erstwhile the awesome drops. This betterment successful navigation, positive bigger, much tin machines, meant I nary longer spent my summertime dragging confused mowers retired from nether oak trees.

However, automowers are acold from perfect.

These are autonomous machines pinch blades, and leaving them to their ain devices comes pinch risks. One spent 3 days methodically destroying a spot of my section earlier I noticed. Another took retired 2 outdoor hold cords. Several models dug sandpits successful bare patches, and different tried to climb up a mini tree.

Obstacle discovery is amended crossed the board, but it still has a agelong measurement to go. Hoses, cables, and cars are still a situation — my family now knows to cheque nether the wheels earlier driving away.

No 1 has really solved gates yet, either (although they’re trying) — I still person to manually unfastened excavation to fto the robot mow the afloat property. And, while each shaper presently advertises NetRTK sum arsenic free for the life of the device, location are evident downsides to relying connected a unreality work to mow your lawn. Finally, automowers are still expensive, and I person concerns astir semipermanent durability.

Like their siblings, robot vacuums, location are myriad models connected the marketplace now; the correct 1 for you will dangle connected the size of your gait and your landscape. To find the mower that worked champion for me, I tested 4 top-of-the-line models pinch specs tin of tackling my challenging terrain and ample expanse of my backyard: The Husqvarna 420 IQ ($3,299), Mammotion Luba 3 AWD 3000 ($2,799), Navimow X430 ($2,499), and the Dreame A3 AWD Pro 2500 ($3,099.99). I besides tried the entry-level Roborock RockNeo Q110H ($1,299) connected my beforehand lawn, which is much for illustration a modular suburban lawn.

Also for illustration robot vacuums, robot lawnmowers autumn nether the caller FCC robot ban, truthful while existing models tin proceed to beryllium sold and supported successful the US — including each the models reviewed present — the destiny of caller models is successful question.

The Segway Navimow X430 ($2,499) is by acold the champion mower I tested. This 60-pound beast looks for illustration Darth Vader’s dog, and was the only mower I tested that didn’t get stuck once. Its 4WD wheels mixed pinch awesome suspension rolled done the potholes, complete sticks and rocks, moreover mini character branches. It navigated astir my chickens and crossed the tall, uneven modulation from my beforehand gait to backmost yards — it was the only bot that could mow some successful 1 travel (with the gross open).

It uses a operation of RTK, vSLAM, and vision-based tech to navigate, and it covered my full spot without erstwhile getting mislaid aliases stuck. It features awesome “xero-turn” maneuverability enabling it to pivot smoothly pinch nary section damage. Its dual-disc, 17-inch cutting width covers much ground, and it was capable to mow astir of my backyard successful nether 3 hours — astir doubly arsenic accelerated arsenic astir competitors. I really liked the remote-control mowing feature, which was useful for tidying up the edges of the section and much delicate areas specified arsenic astir flower beds.

The Segway’s velocity does mean a fewer blades spell untrimmed, and its rainfall sensing relies connected upwind information from the internet, which meant it often didn’t mow because it predicted rainfall that ne'er came. Setting up the NetRTK was a spot tricky, mostly because I had to put the charging position successful an awkward spot to link to the GPS (it can’t beryllium nether an awning aliases up against a building arsenic the mower besides needs a clear position of the sky).

The Dreame A3 AWD Pro 2500 ($3,099.99) is the champion action if you can’t trust connected RTK. Its lidar and camera-based navigation performed astir arsenic good arsenic the Segway successful my backyard, only getting stuck a mates of times. It doesn’t request a clear position of the sky, truthful you tin spot it anywhere, and its sliding edge-cutting platform worked somewhat amended than the Segway’s EdgeSense characteristic successful my testing. (Beware, it’s group to a fixed 1.2-inch minimum).

But successful my testing, lidar was the slightest reliable navigation tech, and sometimes the A3 declared the occupation complete erstwhile it wasn’t. Lidar robots do champion successful a fenced-in yard, arsenic they tin much easy get mislaid and rotation disconnected into your neighbors’ yard, thing that ne'er happened pinch the RTK robots.

While the Dreame seldom sewage stuck, its turning system wasn’t arsenic soft arsenic the Segway, and it dug respective sandpits successful various spots wherever location was nary grass. I do for illustration its “Garden Guardian” mode that uses the camera arsenic a roaming information guard, and it tin besides place erstwhile group transverse its way and pass them that it’s working. It’s been mildly hilarious watching it astonishment the heck retired of canine walkers passing by the beforehand yard.

Husqvarna’s Automower 420 IQ ($3,299) is simply a bully action for a modular yard. It has the longest warranty (four years), the easiest app and controls, and a modular creation for longevity. It’s 2WD, but its ample wheels tackled uneven terrain well. It requires an RTK antenna and has the action of cloud-based RTK (in immoderate areas), but its backup navigation for outer dormant spots requires installing beingness bound wire.

I tested this successful my neighbor’s gait utilizing the beingness RTK antenna, arsenic they person less trees and clearer views of the sky. It navigated well, but it uses radar for obstacle discovery and has nary camera astatine all. This meant it wasn’t arsenic bully astatine dodging objects arsenic the others, and ran into the bushes erstwhile and tried to climb a mini tree.

But if you person a large, uncomplicated, tree-free yard, it’s a bully action acknowledgment to Husqvarna’s wide support network, free-for-life cellular connectivity for some theft and NetRTK (should you request it), and awesome performance.

The Mammotion combines each 3 wireless navigation types — RTK, lidar, and vision — making it perfect for properties pinch spotty GPS sum for illustration mine. But it’s little nimble than the different AWD models acknowledgment to little crushed clearance and weaker suspension.

Its turning system besides tore up a mates areas of my garden, peculiarly a shaded area adjacent my neighbors’ sprinklers, which stayed damper than different spots. Mammotion has acknowledged this issue, telling The Verge “We’ve identified that a caller update to the turning logic caused immoderate unwanted results. The mower turning excessively sharply mightiness tear up the writer to immoderate extent, particularly erstwhile the crushed is bedewed and slippery, aliases the writer isn’t very thick.”

They’ve deployed several package updates to address this, but we should each beryllium wary of relying connected package updates to hole basal problems pinch an costly lawnmower.

The $1,299 Roborock RockNeo Q110H is my fund pick. This rear-wheel-drive mower was awesome connected my flat, treed beforehand yard, though its deficiency of all-wheel-drive meant that the occasional ample character guidelines stopped it successful its tracks. That, and its much constricted range, is why it’s half the value of different mowers here. It offers RTK and vSLAM navigation, pinch the action of antenna aliases NetRTK.

The RockNeo is remarkably akin to the Segway Navimow i100N I tested past year, pinch a fewer upgrades, including amended camera-based obstacle detection, steeper slope navigation (up to 45%), and a wider cutting blade. It tin besides beryllium utilized for manual remote-control mowing and has a built-in edge-cutting feature, though there’s the action of an edge-cutting add-on module, which I haven’t tried.

Edge cutting is still very overmuch a activity successful advancement for each mowers. Some do good straddling the edge, but if you person a obstruction aliases delicate boundary, that won’t work. Companies are trying each sorts of solutions — including typical attachments. Ecovacs Goat A3000 Pro Lidar looks to beryllium the astir promising, acknowledgment to a side-mounted drawstring trimmer. But for now, you should scheme to support your manual trimmer handy.

Robot mowers person improved importantly complete the past 18 months. Advances successful navigation person solved my main symptom points from my last information of testing, and bigger, beefier bots are now amended astatine navigating the varied terrain of American yards. Today, the correct bot will support your gait beautifully pinch minimal effort. While they still request oversight and the occasional rescue, and they haven’t solved each problem, they do return a batch of the activity retired of maintaining your yard.

Photos and videos by Jennifer Pattison Tuohy / The Verge