Gardena
Gardena smart Sileno free 600
- Autonomy
- IIIConditional
- Score
- 54/100Limited
- Readiness
- Known Issues
- Price
- Not tracked
ComparisonGardena smart Sileno free 600
Up to three
Autonomy Ladder
- IManual
- IIAssisted
- IIIConditional
- IVEnvironmental
- VGeneralized
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.
| Condition | smart Sileno free 600 |
|---|---|
| Yard size | |
| Under ¼ acre | DependsRated to 6,458 sq ft on paper, but a hands-on test of this exact model reports daily retrieval after failed satellite runs. |
| ¼ – ½ acre | Depends6,458 sq ft (0.15 acres) sits well below this bracket's quarter-acre floor, before Galaxus's daily-retrieval finding is even a factor. |
| Over ½ acre | Poor6,458 sq ft is the documented coverage ceiling; a half-acre-plus lawn exceeds it before the satellite-reception problems even become relevant. |
| Terrain | |
| Mostly flat | DependsA hands-on test found GPS reception unreliable near the edges of the house even on level ground, unrelated to slope. |
| Gentle slopes | PoorNo slope rating is published, and the same test documents satellite reception failing near ordinary garden features on flat ground already. |
| Steep / hilly | PoorNo slope rating is published at all, and independent testing already reports the satellite signal failing on flat, open ground. |
| Grass type | |
| Typical lawn grass | DependsTwo rear cutting discs handle typical turf grass, but no cutting height or blade specification is published for this model. |
| Mixed / tall growth | DependsNo cutting height range, blade-power figures, or mulching capability are published; nothing documents this model on mixed or overgrown grass. |
| Thick (Bermuda / Zoysia) | DependsNo cutting height, blade-power, or mulching specification is published for dense Bermuda or Zoysia; the rear-disc design is not detailed further. |
| Boundary setup | |
| Wireless required | DependsSatellite positioning replaces the wire, but a hands-on test of this exact model reports daily retrieval from the lawn. |
| Wire required | PoorThere is no wired boundary option; positioning is satellite-only, with no perimeter wire supported as a fallback. |
| No preference | GoodNo preference fits either way, though a hands-on test of this exact unit reports daily retrieval after failed satellite runs. |
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.
What the score is built from.
Nine inputs across three pillars, each weighted as shown and each scored so more is better. A robot can lead on one and trail on another, which is the point of showing them apart.
Capability
Task completion16% of score
Does it finish the job it is sold to do, unattended
45
- Gardena smart Sileno free 60045
18median 72 across 444 scored robots100
Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
40
- Gardena smart Sileno free 60040
0median 72 across 432 scored robots100
Edge-case recovery10% of score
Does it recover from the failures its category presents
30
- Gardena smart Sileno free 60030
18median 53 across 329 scored robots100
Operating envelope4% of score
How far conditions can vary before performance drops
38
- Gardena smart Sileno free 60038
28median 68 across 408 scored robots100
Dependability
Field failure rate16% of score
Documented hardware failures per owner-year
62
- Gardena smart Sileno free 60062
6median 70 across 365 scored robots100
Software stability14% of score
Whether updates fix more than they break
0
- Gardena smart Sileno free 6000
15median 65 across 346 scored robots100
Support longevity10% of score
Committed parts, service and updates, with dates
68
- Gardena smart Sileno free 60068
0median 62 across 440 scored robots100
Ownership burden
Routine maintenance12% of score
Hands-on time it asks for in normal operation
55
- Gardena smart Sileno free 60055
22median 68 across 445 scored robots100
Consumables8% of score
Parts that must be bought to keep it working
80
- Gardena smart Sileno free 60080
8median 69 across 445 scored robots100
How far apart is a long way?
A number only means something next to the spread it sits in. Each track is the real range across every classified robot in the class, with the median marked.
These robots share no measured specification with enough published figures to plot. That is a gap in the record, not a finding about the robots.
What the numbers leave out.
Written on each record, and the only thing here every robot on the site carries.
The trade-off
What each design gives up to be good at what it is good at.
Gardena smart Sileno free 600
Wire-free satellite positioning removes the trench-digging step, but independent testing of this exact model documents the owner retrieving it from the lawn every morning.
Rear twin-disc cutting trims the lawn edge the wire-guided SILENO models cannot reach, yet GPS reception is reported unreliable under small trees and near the house.
A published European price sits inside Gardena’s existing support range, though no US channel exists, so American buyers have no domestic warranty or parts path.
Who each one is wrong for
Stated by the record itself. A robot being wrong for a household is a fact about fit, not a fault.
Gardena smart Sileno free 600
- Yards with small trees or house-adjacent edges
- A hands-on test of this exact model documents GPS reception failing specifically under small trees and along the edges of the house, both common garden features.
- Buyers located in the United States
- Gardena lists the SILENO free range on its international and European sites only, with a euro list price and no domestic warranty or parts channel.
- Owners who need daily unattended operation
- A hands-on review reports the owner carrying the machine back to its base every morning, meaning it is not finishing its job unattended the way the rating implies.
- Buyers wanting a proven boundary-accuracy record
- No independent test of boundary accuracy or cut quality exists beyond that hands-on review, which specifically attributes the machine's failures to unreliable satellite reception under tree cover.
What stays your job
The upkeep ownership hands back to you, whatever the autonomy level says.
Gardena smart Sileno free 600
- Weekly: Examine both blade discs and their pivoting blades, then clean the discs and chassis with a brush and running water; the manual forbids pressure washers and solvents.
- Weekly: Brush grass out of the wheels; the manual warns clogged wheels spoil performance on slopes.
- Monthly: Replace the blades and screws on both cutting discs as complete sets; Gardena documents a usual blade life of 4 to 7 weeks. A 9-blade kit with screws is $26.99 on Gardena’s US shop, and the free’s two discs take 6 blades per change.
- As needed: Clean the charging plates and contact plates with a fine emery cloth and clear grass and twigs out of the charging station; the manual sets no interval for either.
- As needed: Install firmware updates when the GARDENA smart system App offers them.
- Seasonally: For winter, fully charge, switch off, clean, and store the mower dry and frost free on level ground; a charging station left outdoors should keep its power supply connected.
How much each of these is standing on.
Classifications rest on different depths of evidence. A pre-release assessment and a verified one are not the same kind of claim.
| Robot | Evidence status | Sources reviewed | Last assessed |
|---|---|---|---|
| Gardena smart Sileno free 600 | Provisional | 3 | Sep 2026 |
Evidence status counts the sources behind a classification, not their kind. A high count can be maker documentation and price coverage, so read it as how much was reviewed rather than as independent testing. How we weigh evidence.
Keep going.
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.
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