Segway Navimow X390

The X350 buys you battery, not a different mower: it shares the X330's 43.7 lb chassis, 9.3 in cut, 2 to 4 inch height range, EFLS 3.0 RTK-plus-vision positioning and 300-degree camera array, but carries a 10Ah pack for about 200 minutes per charge (80 minute recharge) and a 1.5 acre rating. Segway lists it at $2,799, down from $3,499 at launch, and it includes three years of 4G before the roughly $33 a year renewal. Residential Tech Today beta-tested this exact model for a season and found the standout traits were quiet 60 dB running that allowed night mowing, reliable obstacle recognition, and confident navigation on a tree-heavy lawn - RTK antenna placement still mattered, and moving it meant remapping. Early-spring patches of thin grass confused the VisionFence boundary logic until it was toggled off, and the optional Trimmer accessory occasionally hung up on rocks. As with all X3 mowers it is two-wheel drive, so the 50% slope rating assumes straight up-and-down runs, and there is no onboard rain sensor. Compared with a Husqvarna Automower 450X at roughly $4,000 installed, the X350 is a DIY afternoon and about a third cheaper; compared with the Mammotion Luba 2 AWD 5000 it gives up AWD hill-climbing for faster, straighter cutting. Best for 1 to 1.5 acres of mostly open, gently rolling lawn.

Best for Lawns of 1 to 1.5 acres with scattered trees and only gentle grades, for owners who want DIY setup instead of a dealer install.

The X4 is the mower Segway built to answer the Luba: four hub motors with dual suspension, an 84% (40 degree) slope rating, and a 17 in dual-disc deck driven by two 180 W motors, all on a 64 lb body that can step over 2.8 in obstacles. It comes as the X430 (1 acre, 10.2Ah, $2,499) and the X450 (1.5 acres, 12.8Ah, $2,999), both charging in about 90 minutes at 224 W. The big change from the X3 series is that positioning uses tri-frequency Network RTK delivered over the built-in 4G, so most yards need no antenna at all, and the front wheels steer independently so it turns like a car instead of pivoting and scuffing turf. How-To Geek gave it an Editor's Choice after a season: auto mapping finished a backyard in ten minutes, EdgeSense cut within 2 in of fences, and it ran quietly at night, but the dock still had to be moved twice to find sky, the first pass looked choppy until a second run, and it drove up onto a raised patio and scuffed the coating. 9to5Toys found it handled soggy, uneven ground but chewed turf when wet and missed dog waste hidden in tall grass. Against the Mammotion Luba 3 AWD 3000 at $2,109 the X430 costs more and rates 4% less slope, but cuts an inch wider, goes down to 0.75 in for warm-season turf, and its Ackermann steering is gentler on grass.

Best for Hilly, rutted or rough-terrain lawns of 1 to 1.5 acres where an AWD mower with a wide deck beats the two-wheel-drive X3.

The X330 is the X3 model most people should look at: a one-acre rating, 8Ah battery for about 160 minutes of mowing with a 65 minute recharge, and it sits at $2,299 on Segway's site after a $500 cut from launch pricing. Like the rest of the X3 line it runs EFLS 3.0 - RTK fused with three cameras doing visual SLAM - so it holds position under tree canopy where the older H series and most budget RTK mowers lose lock, and its 300-degree camera plus ToF array recognizes 200+ obstacles with night vision. It mows fast (about 3.3 ft/s) in tidy parallel stripes, cuts 2 to 4 inches, runs at 60 dB, and includes two years of 4G with GPS tracking before the roughly $33 a year Connect+ renewal. Pro Tool Reviews and Robot Review Desk both call the X3 the most polished wire-free mower for flat-to-moderate suburban lots. Where it falls short: two-wheel drive makes the 50% slope rating shaky on side-hills, there is no physical rain sensor (it relies on forecasts), the centered 9.3 in disc leaves a few inches uncut along walls unless you buy the Trimmer accessory, and 43.7 lb is a lot to lift over a curb. Against the Mammotion Luba 2 AWD 3000, the X330 is quicker and gentler on turf but the Luba climbs 80% grades. For a one-acre yard with trees and gentle slopes, this is the sweet spot of the range.

Best for One-acre suburban lawns with tree cover and gentle slopes where fast, precise striping matters more than hill-climbing.

The X315 is the entry to Segway's X3 line: the same 43 lb chassis, 9.3 in cutting deck, 2 to 4 inch height range and EFLS 3.0 positioning as the $4,499 X390, just with a 6Ah battery good for about two hours and a half-acre rating. EFLS 3.0 fuses RTK with three cameras doing visual SLAM and odometry, which is why testers at Notebookcheck and TechRadar found it kept mowing straight under trees where RTK-only mowers stall. Obstacle avoidance uses a 300-degree camera array with a ToF sensor and recognizes 200+ objects including pets, with night vision so it can run after dark at 60 dB. Setup is about 30 minutes and truly wire-free, though you still mount an RTK antenna. Segway has pulled it from its own store (listed at $1,999 but unavailable) while Home Depot, Acme Tools and Abt still sell it, and it is the only X3 that does not get multiple years of 4G included - one year, then about $33 a year. Reviewers' knocks: it is two-wheel drive so the 50% slope rating is optimistic on side-hills, there is no onboard rain sensor (it relies on forecasts), the single 9.3 in disc leaves about 3.5 in uncut at edges without the optional Trimmer accessory, and standby power draw is high. Versus the Mammotion Yuka at $1,399 the X315 costs more but is faster and better under trees; if you are near 0.5 acre, the X330 is often only $300 more.

Best for Half-acre suburban yards with tree cover where you want X3 navigation and app polish at the lowest buy-in.

The i2 AWD replaces the i105N and i110N with the same 7.1 in single-disc body but three fixes for the old model's main complaints: a third, on-demand drive motor on the front zero-turn wheel with knobby off-road tires, a 4G module built in instead of the $120 Access+ add-on, and Network RTK that removes the antenna from setup where coverage exists. Slope rating rises from 30% to 45%, and Segway says the rear motor only engages when traction is needed, which stretches runtime by up to 30%. The i206 AWD ($999) carries a 2.55Ah pack for about an hour of mowing and a 0.15 acre rating; the i210 AWD ($1,299) doubles that to 5.1Ah, roughly two hours, and a quarter acre, and both recharge in about the same time they run. The cutting hardware is unchanged: 2 to 3.6 in height on a manual knob, a narrow deck, and no edge mode. Mowing Magic found the zero-turn wheel stopped the turf scuffing that plagued the i1 and rated the 59 dB noise as conversation-level, but confirmed the manual height knob and the uncut wall strip. Compared with the leftover i110N at $929 you pay a little more for real traction, built-in 4G and antenna-free setup; compared with the i215 LiDAR at $1,599 you give up LiDAR positioning under heavy tree canopy and the wider 8.6 in deck.

Best for Small suburban yards up to a quarter acre with a few slopes or muddy patches, for buyers who want antenna-free setup under $1,300.

The i110N is the same 7.1 in body as the i105N with double the battery (5.1Ah, about 120 minutes per charge) so it can cover a quarter acre, and it won Tom's Guide's Editor's Choice for cut consistency at a price that has slid from $1,299 at launch to a $929 list and frequent sub-$800 sales. It uses Segway's EFLS 2.0 RTK plus a front VisionFence camera, so when the satellite fix wobbles under trees it can hold the boundary visually for a while instead of wandering off. Reviewers consistently praise the straight, overlapping stripes with no missed patches and the near-silent 58 dB operation that makes night mowing realistic. The complaints are the flip side of the budget price: it is slow (Tom's Guide clocked roughly three times the time of push mowing), the 30% slope rating and front-wheel drive mean it spins out on real hills, PCWorld's unit repeatedly drove off curbs because there is no drop-off detection, and GPS anti-theft needs the $120 Access+ 4G module. Segway has pulled it from its own store in favor of the i210 AWD, but Home Depot still stocks it. For a flat quarter-acre suburban lot it remains one of the cheapest dependable wire-free options; if your yard has slopes or a parking strip, look at the i210 AWD or a Luba Mini instead.

Best for Flat quarter-acre suburban yards where you want a quiet, accurate wire-free mower on a budget and can live with slow cycles.