Gardena
Gardena Sileno Life 750
- Autonomy
- IIAssisted
- Score
- 70/100Strong
- Readiness
- Ready Now
- Price
- $1,199list
ComparisonGardena Sileno Life 750
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 | Sileno Life 750 |
|---|---|
| Yard size | |
| Under ¼ acre | GoodWell within 750 sq m rating; no scaling concern for small residential yards. |
| ¼ – ½ acre | GoodTypical suburban lawn zone falls within rated 750 sq m coverage; single-unit operation sufficient. |
| Over ½ acre | PoorRated coverage maxes at 750 sq m; larger estates exceed capacity and require multiple mowers or external perimeter zoning. |
| Terrain | |
| Mostly flat | GoodOptimal operating condition; GPS positioning and wire-following both reliable on level ground. |
| Gentle slopes | DependsSlopes 10–15° manageable; slopes >15° introduce traction loss and wire-tracking drift per owner reports. |
| Steep / hilly | PoorRated for gradients under 25% per specs but owner reports document traction failure >20% on wet grass; not recommended for steep properties. |
| Grass type | |
| Typical lawn grass | GoodStandard cool-season turf (fescue, bluegrass) cuts reliably at 20–60mm heights per specification. |
| Mixed / tall growth | DependsTall fescue and other coarse grasses cut at upper range (50–60mm); may require multiple passes weekly for dense growth. |
| Thick (Bermuda / Zoysia) | DependsThick Bermuda or St. Augustine grass at lower mowing height (20–30mm) increases blade dulling; weekly inspection necessary. |
| Boundary setup | |
| Wireless required | PoorThis model requires 1.6mm boundary wire; no RTK or wireless boundary option available. |
| Wire required | GoodDesigned for perimeter-wire operation; installation straightforward with Gardena wire and connectors included. |
| No preference | GoodUses perimeter wire. Fits readers with no boundary preference; wire is required. |
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
75
- Gardena Sileno Life 75075
18median 72 across 444 scored robots100
Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
50
- Gardena Sileno Life 75050
0median 72 across 432 scored robots100
Edge-case recovery10% of score
Does it recover from the failures its category presents
38
- Gardena Sileno Life 75038
18median 53 across 329 scored robots100
Operating envelope4% of score
How far conditions can vary before performance drops
62
- Gardena Sileno Life 75062
28median 68 across 408 scored robots100
Dependability
Field failure rate16% of score
Documented hardware failures per owner-year
81
- Gardena Sileno Life 75081
6median 70 across 365 scored robots100
Software stability14% of score
Whether updates fix more than they break
55
- Gardena Sileno Life 75055
15median 65 across 346 scored robots100
Support longevity10% of score
Committed parts, service and updates, with dates
100
- Gardena Sileno Life 750100
0median 62 across 440 scored robots100
Ownership burden
Routine maintenance12% of score
Hands-on time it asks for in normal operation
56
- Gardena Sileno Life 75056
22median 68 across 445 scored robots100
Consumables8% of score
Parts that must be bought to keep it working
89
- Gardena Sileno Life 75089
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 Sileno Life 750
Random-pattern cutting inside a fixed wire keeps the machine simple and the setup permanent. You get an even lawn from cutting often; you do not get route planning or obstacle avoidance.
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 Sileno Life 750
- Lawns with complex topography, slopes, or frequent obstacles
- No avoidance capability; slopes >15°, rocks, toys, or garden furniture will cause collisions or stalling requiring manual recovery.
- Users wanting wire-free, zero-setup autonomous operation
- Boundary-wire infrastructure is mandatory. RTK or vision-based alternatives not available on this model.
- Large estates or multi-zone properties over 750 sq m
- Rated for 750 sq m maximum; properties larger than this exceed rated coverage and would require multiple units.
What stays your job
The upkeep ownership hands back to you, whatever the autonomy level says.
Gardena Sileno Life 750
- Weekly: Dock cleaning and mower base inspection for grass clippings and debris buildup.
- Monthly: Blade inspection for dulling; jagged grass edges indicate wear requiring replacement.
- Every 3-6 months: Replace the blades as a set (typically €15-25). They are flip-and-replace razors rather than sharpenable blades; grinding an edge back removes the coating and leaves a weakened blade spinning on an unattended machine.
- Annually: Boundary wire inspection for breaks and corrosion; re-splicing or perimeter repair as needed (€0-500+ depending on property size and condition).
- Seasonally: Spring startup (full charge, app pairing verification, dock contact cleaning); autumn storage with the mower cleaned, the battery charged rather than left flat, and the dock brought indoors if freezing is expected.
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 Sileno Life 750 | Pending | 5 | Aug 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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