Question 1

What size robot mower do I need for my lawn?

Accepted Answer

Match the mower's rated area to the grass you actually have, then leave headroom. Ratings assume an open rectangle mowed on a full schedule; a lawn split into front, back and side sections, or crowded with beds and trees, takes longer to cover than its area suggests. If your lawn measures close to a mower's ceiling, the next size up is the safer choice — an undersized mower does not fail, it simply never finishes, and you notice in the growing season when it matters most.

Question 2

Are wire-free robot mowers better than perimeter wire?

Accepted Answer

They are easier to live with and more expensive. A perimeter wire has to be pegged or buried around every edge, bed and obstacle before the mower runs at all, and it has to be repaired when it breaks — but once laid it is unambiguous, and it does not care about tree cover or tall buildings. Wire-free mowers navigate by satellite, camera or laser and set up in an afternoon, at the cost of needing a clear enough sky or a well-lit enough lawn to see where they are.

Question 3

What is RTK on a robot mower?

Accepted Answer

RTK is satellite positioning with a fixed reference station — usually a small antenna you mount on the house — that corrects the mower's own GPS to within a couple of centimetres. That precision is what lets a mower cut in straight parallel lines and stop at an invisible boundary instead of bouncing off physical obstacles. It needs sky: dense tree cover or a tall building on one side can leave part of the lawn without a usable fix, which is why many RTK mowers now pair it with a camera.

Question 4

Can a robot mower handle a slope?

Accepted Answer

Up to its rated grade, and the rating is a manufacturer claim measured on dry grass. A slope stated as a percentage is rise over run, so 45% is a little over 24 degrees. Wet grass, a bank at the edge of the cutting area and a turn taken across the fall line are all harder than the straight-line figure implies, so treat the rating as a ceiling rather than a target, and prefer all-wheel drive if your lawn has real banks.

Question 5

How short can a robot mower cut?

Accepted Answer

Most adjust somewhere between 20 and 45 mm, which suits cool-season grass well. Warm-season turf such as St. Augustine or Bahia wants 60 mm or more, and only a handful of models reach that — if that is your grass, cutting height is the specification that decides your shortlist before anything else does. Robot mowers also cut little and often, dropping clippings as fine mulch, so they are not designed to take a badly overgrown lawn back down in one pass.

Question 6

Why do some results say 'not stated'?

Accepted Answer

Because the manufacturer did not publish that specification. This site prints 'not stated' rather than filling the gap with a plausible default, and those products still appear in your results — an incomplete listing is not a worse mower, only a less completely described one. A filter here excludes a product only when its listing positively contradicts what you asked for.

Question 7

Do you test these robot mowers?

Accepted Answer

No. Every figure is taken from the manufacturer's published listing and normalised into comparable units, then measured against the median for that product's own navigation class and lawn-size band. There is no test lawn, no stopwatch and no slope rig, and we say so on every page.

Your requirements

Lymow One Plus Robot Lawn Mower, Wire-Free RTK+Vision Navigation, 1.73 Acres Daily Coverage, 100% Slope (45°) Climbing, 1.2"-4" Cut Height, AWD All-Terrain Automatic Robotic Mower, App Control

Sunseeker X7 AWD Robot Lawn Mower, RTK, Vision AI, 0.75 Acre, Wire-Free

Sunseeker X5 AWD Robot Lawn Mower, RTK, Vision AI, 0.5 Acre, Wire-Free

MOVA LiDAX Ultra 2000 AWD Robot Lawn Mower Wire Free RTK Free for up to 0.5 Acre*Dual Maps, 360° 3D LiDAR & AI Dual Vision Mapping, Robotic Mower with 4G, for 80% Slopes, Cutting Height 1.2”–3.9“

MOVA LiDAX Ultra 2000 AWD Robot Lawn Mower with Blades Kit, Wire Free RTK Free for 0.5 Acre*Dual Maps, 360° 3D LiDAR & AI Dual Vision Mapping, Robotic Mower with 4G, 80% Slopes, Cutg Height 1.2"–3.9"

[Latest Upgrade All-Terrain Wire-Free] DREAME A3 AWD 1000 Robot Lawn Mower, 360° 3D LiDAR & AI Dual Vision Smart Robotic Mower for 0.25 Acre, 80% Slopes & 45min Fast Charge

Sunseeker V3 Robot Lawn Mower, Vision AI, 0.15 Acre, Wire-Free

WORX Robot Lawn Mower 4WD for 1 Acre, No Perimeter Wire, WR344

roborock RockMow X130H Robot Lawn Mower, Wire-Free 4WD Robotic Lawn Mower with Full-Band RTK + Quad-Vision Navigation, Auto Mapping, Multi-Sensor AI Obstacle Avoidance, 80% Slope, Covers Up to 1 Acre

L2500 Robot Lawn Mower for 1 Acre, NetRTK + AI Vision Lawnmower Robot, Wi-Fi HaLow Connectivity, No Boundary Wire, AI Obstacle Avoidance, App Control, 60dB Quiet, Multi-Zone Management, IP66

DREAME LiDAR 3500 Robot Lawn Mower A3 AWD Pro Wire Free No RTK, 4WD for 38.7° Slopes, Dual AI Vision Robotic Lawn Mowers,Dual-Disc Cutting 15.8" Width, Smart Zero-Edge, App Control for 0.87 Acre

Mammotion LUBA 2 AWD 3000HX Robot Lawn Mower with 4G, All-Wheel-Drive for 80% Slope, Perimeter Wire Free for 0.75 Acre, UltraSense AI Vision & RTK Auto-Mapping, 2.2"-4.0" Adjustable Cutting Height

Robot mower finder: match a mower to your lawn