The full comparison
Two spec sheets, read closely
Mammotion asks $1,399 for the YUKA mini 2; Segway Navimow asks $799 for the i105. That is a gap of $600, and this page exists to tell you whether it buys anything your yard will notice. YUKA mini 2 covers more ground on paper; YUKA mini 2 climbs harder. The sections below walk every dimension that matters, drawn from both spec sheets, both manuals, and the places where owners' reports converge.
How they navigate
This is the deepest divide in the duel: YUKA mini 2 carries LiDAR into the fight, and i105 does not. Under open sky it will not matter; under trees it decides everything.
Mammotion YUKA mini 2
A 360 degree LiDAR plus vision, without RTK's satellite dependence, in the cheapest package Mammotion sells. For a flat, enclosed city yard this is honest engineering: the LiDAR maps fences and beds directly and does not care about sky view at all, which incidentally makes it the simplest machine in the ledger to install.
Segway Navimow i105
Segway's RTK positioning plus the VisionFence camera system. Under open sky the fix is crisp and the vision handles obstacles. Like every RTK-only machine it wants sky, and a small open yard gives it exactly that, which is why this technology paired with an eighth of an acre works so cleanly.
Hills, ruts, and wet grass
YUKA mini 2 holds the terrain card at 45 percent against 30 percent. Whether that matters depends entirely on whether your lawn has a hill worth the name.
Mammotion YUKA mini 2
Rear-wheel drive with a 45 percent slope rating, which covers the gentle grades of most urban lawns and should not be asked for more. Terraces and true banks belong to the AWD machines.
Segway Navimow i105
Rear-wheel drive rated to 30 percent slopes, meaning the gentle crown of a normal small lawn and nothing more heroic. This is a machine for lawns, not hillsides.
The cut itself
Cutting width, height range, and pace decide how the lawn actually looks between visits, and the two decks approach it differently.
Mammotion YUKA mini 2
A single 7.5 inch disc, 0.8 to 2.6 inches of height range, sized for a quarter acre at an unhurried pace. There is no edge disc; the last inch at walls stays yours.
Segway Navimow i105
A 7.1 inch cut at 1.2 to 2.4 inches of height, pacing about 1,076 square feet per hour, which crosses an eighth-acre several times a week without hurry. The finish on small flat lawns is what sells the whole category: even, quietly striped, endlessly repeated.
Living with them
A robot mower is a housemate before it is a tool: the app, the install, the noise, and the schedule are what you touch after week one.
Mammotion YUKA mini 2
Ten zones, the family app, and quick mapping in a small space. Because there is no RTK antenna to site, installation is genuinely unbox, map, done.
Segway Navimow i105
Navimow's app is widely considered the most polished onboarding in the category: the mapping drive is smooth, the scheduling screens are clean, and the whole install commonly fits inside an hour. Four zones cover the front-and-back reality of small properties.
Power, range, and theft
Batteries set the rhythm of the mowing week, and the cellular question decides what happens on the worst day you can imagine for a machine that lives outside.
Mammotion YUKA mini 2
The notable omission: no 4G module. On your own Wi-Fi it reports happily; carried off in a van it goes silent. In a fenced back garden that is an acceptable trade for the price; in an open front yard it deserves honest thought.
Segway Navimow i105
A 90 minute charge yields about 60 minutes of work, comfortable at this acreage. No cellular module: on Wi-Fi it reports, beyond it it does not, the same honest economy trade the YUKA makes.
What upkeep looks like
The maintenance list is where robots humiliate gas mowers, but the two machines still differ in small ways worth knowing.
Mammotion YUKA mini 2
One disc's worth of blades, a rinse now and then, winter indoors. The cheapest machine in the ledger to run.
Segway Navimow i105
Standard robot consumables: small blades, occasional cleaning, firmware. Nothing with an engine's appetites.
What owners report
We do not claim to have mowed with every machine; we claim to have read everything owners write about them, and to report only where their accounts converge.
Mammotion YUKA mini 2
YUKA mini owners are blunt about what they bought: the cheapest competent LiDAR robot, for flat fenced yards, with no cellular and no climbing ambitions. Within that box, reports are content: mapping is quick, the cut is tidy, and the price meant the decision took an evening instead of a month. Outside that box, returns happen.
Segway Navimow i105
The i105's owner base is the largest in the small-yard class, and the reports repeat themselves: the app is the best onboarding in the category, the machine vanishes into a routine within a week, and the area limit is real. The most common regret thread is from buyers whose lawn measured bigger than they guessed; measure before ordering is practically the community motto.
Three yards, three answers
Spec sheets argue in the abstract. Yards are specific. Here is how this duel resolves on three grounds we hear about constantly.
The flat, fenced quarter acre
YUKA mini 2 handles this comfortably; the i105 at 0.125 acres of rated capacity is at or past its limit here. Rated capacity should exceed your measured lawn by a third, so this yard has already made its choice.
The half acre with one real hill
Honestly, neither machine is the hero here: 45 percent is the better of the two ratings, and a truly steep bank wants the 80 percent AWD class, a LUBA, before either of these.
The acre under mature trees
YUKA mini 2 is the only safe answer. Satellite-first machines lose their fix under continuous canopy, and an acre of mature trees is the definition of continuous canopy.
Before you order either: the preflight
Four checks, ten minutes, and they prevent nearly every regretful return in this category. First, measure the lawn honestly, in square feet, with a mapping app rather than a guess; rated capacity should exceed reality by a third. Second, stand in the yard and look up: both of these machines use satellite positioning, so open sky matters, and the antenna wants the clearest view your property offers, high and unobstructed. Third, walk the narrowest gate the machine must pass; a robot that cannot reach the back lawn mows half a property. Fourth, pick the dock spot now: level ground, cover from the worst weather if you can manage it, and power within reach.
And decide the cellular question before checkout, not after a theft: neither machine carries 4G, which is an honest economy in a fenced backyard and a gamble anywhere strangers walk past.
Install day, honestly
The brochures say fifteen minutes. The truth depends almost entirely on which navigation system you bought, so here is what the first afternoon actually looks like with each.
Mammotion YUKA mini 2
The gentlest setup of the ten. No wire, no antenna, no RTK homework: the YUKA mini navigates by LiDAR and cameras, so install is dock placement, app pairing, and one slow lap so it can see its world. Most owners are mowing within half an hour of opening the box. Because there is no satellite dependency, it also tolerates dense tree cover and tight side yards that would complicate an RTK install, which is exactly the kind of yard it is built for.
Segway Navimow i105
Segway has tuned the i-series install to feel like consumer electronics. The small RTK antenna mounts on the dock itself or a nearby wall, the app walks you through a perimeter drive with a virtual joystick, and VisionFence fills the gaps where satellite reception dips. On the eighth-acre yards this machine is meant for, the whole ceremony fits inside an hour. The manual's one real demand is the same as every RTK machine: give the antenna sky, not eaves.
The math of the mow
Rated pace, translated into your week: at 1,200 square feet per hour, the YUKA mini 2 covers its full 0.25 acres rating in roughly 9.1 hours of actual mowing, while the i105 at 1,076 square feet per hour needs about 5.1 hours for its 0.125 acres. Neither does it in one sitting; both work in charge cycles, mowing, docking, topping up, and going back out without asking you anything.
The practical difference: on the same half-acre lawn, the i105 finishes a full pass sooner and spends more of the week parked, which matters if you want mowing confined to school hours or weekday mornings. Spread over a normal schedule of two to three passes a week, both machines keep a lawn permanently at height rather than rescuing it, and that steady rhythm, not raw speed, is what makes a robot lawn look better than a Saturday-mowed one.
A year in the yard with each
Robot mowers are seasonal creatures: the spring surge, the summer drought, the leaf fall, and the winter shelf each ask something different of them.
Mammotion YUKA mini 2
The seasonal rhythm of a flat city yard is gentle, and the YUKA follows it: frequent spring visits, a raised deck through the summer, and a final short cut before winter storage. Without 4G it has no winter opinion at all; unplug the dock, carry it inside, done.
Segway Navimow i105
An eighth of an acre changes fast in the spring flush, and the i105's near-daily visits are what keep it looking mown rather than cut. Summer wants the 2.4 inch ceiling. Fall leaf cover beyond a light scatter is worth raking first; small decks are mulchers of blades, not of oak drifts.
Where this duel sits in the ledger
Nothing in the ledger undercuts this pair; these are the least expensive serious machines we track. Above them sits the Mammotion LUBA 2 AWD 3000HX at $1,899, for the buyer whose yard demands more than either machine here offers: Last year's warhorse at a real discount since LUBA 3 landed. The value pick for slopes.
The other duels, if this one did not settle it: X330 vs LUBA 3 AWD 5000 · LUBA mini 2 AWD 1500 vs i110 · LUBA 2 AWD 3000HX vs LUBA 3 AWD 5000 · X350 vs LUBA 2 AWD 10000H · i105 vs i110
The verdicts, written out
Mammotion YUKA mini 2
The YUKA mini 2 is the sensible ticket into LiDAR navigation for a flat, fenced quarter acre, at a price nothing else with this stack approaches. Its two honest limits, rear-wheel drive and no cellular, are precisely what the price buys off. Know your yard and it is a bargain; ask it to climb and you bought the wrong robot.
Segway Navimow i105
The i105 is the gateway machine: the least money that buys a real wire-free robot from a serious maker. Its limits, small area, gentle slopes, no 4G, are printed on the label. For a genuinely small flat yard it is the rational first robot, and the i110 above it exists for everyone who reads those limits and flinches at exactly one.
Fair questions
Is the YUKA mini 2 or the i105 better for slopes?
Mammotion YUKA mini 2 climbs 45 percent grades against 30 percent for the other machine. For genuinely steep ground, the higher figure with all-wheel drive is the safer buy.
Which covers more lawn?
The YUKA mini 2 is rated for 0.25 acres; the other for 0.125. Buy at least a third more capacity than your measured lawn so the machine rests and recharges comfortably instead of running flat out.
Which should I buy for a yard with heavy tree cover?
YUKA mini 2. Its LiDAR keeps painting the world when leaves blot out the satellites; the other machine will pause and hunt for its fix under dense canopy.
Do either of them cut all the way to the edge?
No. Like nearly all robots, both leave a small fringe at hard borders; plan one relaxed string-trimmer lap a month. Edges remain the class's honest weakness.
Do they need Wi-Fi, and is there a subscription?
Setup and app control want a connection: Wi-Fi at the dock, or the machine's own 4G where fitted. Core mowing runs without a monthly fee on every machine here; connected extras such as cellular tracking can carry a plan after an included period, so check the current terms on the listing before you count on them forever.
How loud are they, really?
Quiet enough to run at 7 am without apology. These machines cut with small razor blades spinning under a slow chassis, roughly the sound level of a normal conversation, against the 90-plus decibels of a gas mower. The usual owner surprise is not the noise but the silence: you stop noticing mowing is happening at all.
Can they mow in the rain?
Both are weather-sealed for the drizzle they will inevitably meet, and both are better lawn citizens when scheduled around soaking rain: wet grass cuts ragged, clumps instead of mulching, and turns slopes slick. Rain sensors and app schedules handle it; the machines survive rain, the lawn just prefers they wait an hour.
What happens to them in winter?
Indoor storage, half-charged, dock unplugged. Lithium batteries age fastest when stored full and frozen; a garage shelf through the snow months is the entire wintering procedure, followed by a firmware update at spring wake-up.
Which is the value pick right now?
On list prices, the i105 at $799. Both brands discount hard through the season, so check the noticeboard before paying list for either.