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Robot Autonomy, Classified
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ComparisonGardena smart Sileno free 800 and Segway Navimow i2 LiDAR Pro

Up to three

All robot lawn mowers. Every figure below is placed against the whole class, so a gap can be read against how much the class itself varies.

Where each one suits you.

The conditions each robot was assessed against, side by side. Rows marked in gold are where these machines genuinely differ.

Fit verdicts by condition for each robot
Condition smart Sileno free 800 Navimow i2 LiDAR Pro
Yard size
Under ¼ acre GoodCoverage rated for up to 800 m² (8,600 sqft); quarter-acre yards fall well within range. GoodSegway rates the i210 for 1,000 m², about a quarter acre, and Notebookcheck tested it on 300 m².
¼ – ½ acrethey differ DependsUpper end of rated coverage; multiple dock zones or split scheduling may be required for consistent weekly cuts. GoodSegway rates the i220 LiDAR Pro for 2,000 m², close to half an acre.
Over ½ acre PoorExceeds 800 m² rating. Manufacturer documentation does not address larger properties; runtime and battery capacity unspecified for boundary sprawl. PoorLawns over half an acre exceed Segway's 2,000 m² rating for the larger i220 LiDAR Pro.
Terrain
Mostly flat GoodIdeal operating condition. Flat turf with firm ground optimizes GPS accuracy and traction. GoodNotebookcheck saw straight paths, full coverage and an even cut on open lawn.
Gentle slopesthey differ DependsRated for up to 25% gradient; 15-20% slopes perform reliably. Steeper sections may cause traction loss or GPS signal fade. GoodAll-wheel drive and front-wheel steering gave Notebookcheck's unit off-road capability on uneven lawns.
Steep / hillythey differ PoorAbove 25% gradient, traction failure and boundary-detection unreliability documented. Sidehilling on slopes above 20% produces GPS accuracy loss. DependsIt climbed a 55% artificial-turf ramp for Notebookcheck, but no test on real steep grass was found.
Grass type
Typical lawn grass GoodDesigned for standard residential turfgrass. Mulching blade and systematic navigation optimized for fine-to-medium blade grass types. GoodNotebookcheck found the cutting deck produced an even cut on open lawn areas.
Mixed / tall growth DependsBlade dulling accelerates in tall or coarse grass; more frequent replacement intervals expected. Manufacturer cadence based on standard mowing height assumption. DependsNo test of the i2 LiDAR Pro in long or overgrown grass was found.
Thick (Bermuda / Zoysia) DependsDense, thick grass increases blade stress and motor load; slower coverage and potential battery drain on single-pass schedules. Test in heavy-growth season before committing. DependsNo test in thick or dense turf was found for its 22 cm six-blade disc.
Boundary setup
Wireless required GoodWire-free GPS geofencing is this mower's defining feature. No perimeter wire required; virtual boundary drawn via app. GoodIt maps and navigates with LiDAR, network RTK and vision, with no wire or antenna.
Wire requiredthey differ DependsThis mower does not support perimeter wire operation. If you prefer wire-based boundaries, older Sileno+ models (wired) offer that option with proven RTK availability on select tiers. PoorSegway sells it as wire-free only, with no boundary wire installation option listed.
No preference GoodWireless GPS geofencing is the only boundary method available; no wire option. Works well for owners with no preference. GoodIts wire-free setup meets a buyer with no boundary preference.

A robot being poor for a condition is a fact about fit, not a fault. “Depends” means the record names a limit worth reading, not that the answer is unknown.

Keep going.

The full recordGardena smart Sileno free 800Specifications, evidence, the Fit Check in full, and every tracked change.The full recordSegway Navimow i2 LiDAR ProSpecifications, evidence, the Fit Check in full, and every tracked change.

Robovations classifies robots; it does not rank them. Nothing on this page is a recommendation, and no manufacturer influences a classification or its placement here.