The Idle Lawn

The groundskeeper's guide to doing nothing

The last summer you mow.

The wire is dead. The new machines navigate by satellite and LiDAR, climb real hills, and ship in a box. We read every spec sheet so you can retire the Saturday machine.

Match my yard See the duels

A short history lesson

Why the wire died, and why every old review is wrong

2012 to 2023

The buried fence

A perimeter wire dug around your whole lawn. Hundreds to install, one spade cut ended the season, and the mower wandered its cage at random.

2023 to 2025

The satellite era

RTK arrived: one small antenna, centimeter accuracy, clean stripes, no wire. Map the lawn from an app in an afternoon.

2025 onward

Eyes of their own

LiDAR and AI vision joined the satellites. The newest machines keep working under trees where RTK loses the sky, and see the dog's toy before they meet it.

Most robot mower reviews were written for the buried-fence era. They are not wrong about those machines; they describe a product that no longer competes.

Everything on this site covers the wire-free generation only. The groundskeeper insists.

Two machines, one lawn

The duels

Segway Navimow

X330

vs

Mammotion

LUBA 3 AWD 5000

48% Slope 80%
1 acre Covers 1.25 ac
$2,799 Price $2,399

The flagship question · read the duel

Mammotion

LUBA mini 2 AWD 1500

vs

Segway Navimow

i110

80% Slope 40%
0.37 ac Covers 0.25 ac
$1,999 Price $1,099

The small-yard duel · read the duel

Mammotion

LUBA 2 AWD 3000HX

vs

Mammotion

LUBA 3 AWD 5000

80% Slope 80%
0.75 ac Covers 1.25 ac
$1,899 Price $2,399

Last year vs this year · read the duel

Mammotion

YUKA mini 2

vs

Segway Navimow

i105

45% Slope 30%
0.25 ac Covers 0.125 ac
$1,399 Price $799

The entry ticket · read the duel

Segway Navimow

X350

vs

Mammotion

LUBA 2 AWD 10000H

48% Slope 80%
1.5 ac Covers 2.5 ac
$3,499 Price $3,499

The acreage question · read the duel

Segway Navimow

i105

vs

Segway Navimow

i110

30% Slope 40%
0.125 ac Covers 0.25 ac
$799 Price $1,099

Sibling rivalry · read the duel

The sixty-second sizing

How much lawn do you actually have?

Answer here and the groundskeeper takes it from there: four more questions, then the machine that fits your yard, reasons written out.

A city yard A quarter acre Half an acre An acre or so Multiple acres

The groundskeeper's ledger

Every wire-free mower that matters

Click a column to sort. Updated 2026-08-17.

MachinePriceUp to SlopeNavigationDrive
Mammotion LUBA 3 AWD 5000 $2,399 1.25 ac 80% 360 LiDAR + NetRTK + AI vision (Tri-Fusion) AWD Amazon
Mammotion LUBA 3 AWD 5000H $2,599 1.25 ac 80% 360 LiDAR + NetRTK + AI vision (Tri-Fusion) AWD Amazon
Mammotion LUBA 2 AWD 3000HX $1,899 0.75 ac 80% RTK + UltraSense AI vision AWD Amazon
Mammotion LUBA 2 AWD 10000H $3,499 2.5 ac 80% RTK + UltraSense AI vision AWD Amazon
Mammotion LUBA mini 2 AWD 1500 $1,999 0.37 ac 80% Tri-camera AI vision + NetRTK + 360 LiDAR AWD Amazon
Mammotion YUKA mini 2 $1,399 0.25 ac 45% 360 LiDAR + vision RWD see duels
Segway Navimow i105 $799 0.125 ac 30% RTK + vision (VisionFence) RWD see duels
Segway Navimow i110 $1,099 0.25 ac 40% RTK + vision (VisionFence) RWD see duels
Segway Navimow X330 $2,799 1 acre 48% RTK + 300-degree vision + LiDAR assist AWD see duels
Segway Navimow X350 $3,499 1.5 ac 48% RTK + AI vision + LiDAR assist AWD see duels

The honest corner

What the robots still cannot do

  • Edges. Most machines leave an inch at hard borders. One pass a month with a string trimmer stays your job, unless you buy one of the few with a true edge disc.
  • Sky. RTK-only machines need open sky. Heavy tree cover means you pay for LiDAR or you fight dropouts.
  • Chaos. Toys, hoses, and fallen branches are obstacles, not assignments. The lawn must be robot-legible.