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07 of 10 Best for small yards Boundary wire · Boundary wire
Gardena
Gardena Sileno City 250
The quietest mower we track and the right size for a small urban lawn — provided you accept a weekly clean and a fiddly first setup.
Where it sits 07 of 10 overall 02 of 2 in Boundary wire type median 7.4 (n 2) field median 7.3
Drawn from the spec sheet: 0.06-acre plot to scale · ground tilted to the 35% rating · lanes 6.3 in wide, the real cut · buried wire, random route, dock on the edge, canopy overhead. Manufacturer ratings, not our measurements.
Amazon link · we earn a commission if you buy · No official US price for this EU-first model · Amazon price not shown
cut = score, 5–10 in half-point notchesuncutdry patch = weakestboundary wire median, n 2
Scoring note
Reliability 6.0 (30%): the weakest axis and the reason this dropped from its previous score — roboter-forum carries five separate Sileno City 250 problem threads covering stuck behaviour, startup sensor failures, a dead mainboard, and a start button that failed after two seasons. Performance 7.5 (25%): very good inside its 250 m² envelope, with CorridorCut a real advantage in tight gardens. Usability 7.5 (20%): quiet and hose-cleanable, but the initial wire setup is described as complex and it needs a weekly clean in wet weather. Value 6.5 (15%): the going US import price for 250 m² is not cheap per square metre. Support 8.0 (10%): Husqvarna Group backing and parts availability, offset by warranty repairs that did not stick. Weighted total 7.0.
Recommended for
What backs it
Not where
What counts against it
Built from 9 sources: 4 owner threads, 1 hands-on review, 2 videos, 2 spec pages.
We don't sell these and we don't run them. The score is the weighted result of five factors read from the sources above; specs last checked Sep 7, 2026. How the five factors are weighted →
Manufacturer ratings, not our measurements. 2 values read from no primary source are shown as n/v rather than guessed. The retailer's page is the one that counts at checkout.
SpecGardena
Official product page: 250 m² max, 57 dB(A), boundary wire, CorridorCut
SpecGardenasupportus
Official support article on slope specifications
Ownerroboter-forum
Owner thread: ~18 months of ownership, mower gets stuck constantly and drives repeatedly into obstacles
Ownerroboter-forum
Owner thread: material quality, noise and stuck frequency compared unfavourably with earlier Gardena models
Ownerroboter-forum
Owner thread: startup display hang, sensor replaced under warranty, fault returned after one day
Ownerroboter-forum
Owner thread: mainboard failure
VideoYouTube
'Unser Fazit nach einem Jahr' — owner verdict after a full year with a Gardena Sileno
VideoYouTube
Sileno City 250 season-end owner experience and winter storage
Hands-onnextpit
Full-season editorial test: near-maintenance-free running, but gets stuck on mole holes and fallen plants; complex setup
02 of 10Boundary wireDiscontinued 2026
The mower everything else is benchmarked against — bury the wire once, then budget for a battery around year three.
vs. the Sileno City 250Reliability +2.0Performance +1.5Support +1.5
Not rated for this yard
Amazon link · we earn a commission if you buy · $2,499 MSRP · Amazon price not shown
08 of 10Battery push & self-propelled
It cuts like a gas mower and the rear-wheel self-propel is genuinely good, but plan on a second 4Ah battery for anything past a quarter acre and treat the plastic drive gears gently.
vs. the Sileno City 250Support −2.0Value +1.5Reliability +0.5
Not rated for this yard
Amazon link · we earn a commission if you buy · $699.99 MSRP · Amazon price not shown
Sileno City 250
7.0/10 · Gardena