Gardena SILENO City 500 Review UK 2026
Quick verdict
Score: 7.3/10
Best for: Owners who want an always-neat lawn with almost no effort
Not for: Very large, complex or steeply sloped lawns beyond its rated area
Bottom line: A capable lawn mower (robotic mower) for a well-kept lawn.
The Gardena SILENO City 500 is a robotic lawnmower made for lawns up to 500 m², and it is designed to handle inclines of up to 25 percent. The UK version fits typical medium gardens, with a 20 - 50 mm cutting height range for short to moderate growth. Day-to-day use involves setting up on the lawn and then running regular autonomous mowing, with boundary planning needed for very irregular edges or scattered steep areas. For UK buyers, it is sold as the Gardena lawn mower with a UK plug.
Key specifications
| Feature | Stated spec |
|---|---|
| Work area | up to 500 m² |
| Incline | up to 25% |
| Cutting height | 20 - 50 mm |
Pros
- Robotic mower
- Hands-off, always-neat lawn
Cons
- Higher upfront cost; check the working area fits your lawn
- Match the cutting width and power to your lawn size
- May need a boundary wire unless it's a wire-free model
Mower Type and Power
The lawn mower positions the SILENO City 500 as a robotic lawnmower, intended for automated mowing rather than manual push cutting. It is designed to handle lawn areas up to 500 m², which fits small to medium gardens. The unit is also described as being able to cope with slopes, where inclines reach up to 25 percent. From a power-use perspective, the review notes that "power" relates mainly to its robotic, self-guided operation, and no motor wattage is specified. Setup and ongoing guidance are likely to matter, since manual power details are not provided.
Cutting Width and Deck
Cutting height and deck details are where the SILENO City 500's day-to-day mowing results become easiest to judge, since these settings determine how much grass is left and how well the mower can keep an even look. The mower offers a cutting height range of 20 to 50 mm, so owners can start higher for longer growth and drop down gradually. Deck specifics are not fully detailed here, so deck material, blade arrangement, and deck width are not stated. A stable deck helps blades trim consistently, while frequent re-setting can cause uneven patches if the lawn is already lumpy or uneven.
Lawn Size and Collection
For a robotic mower, lawn size and how the machine covers the mowing area in practice are often the decisive factors, because the workload and boundary layout affect how consistently it can cut through the whole garden. The Gardena is rated for up to 500 m², so larger gardens may require longer run time or additional setup work if the layout is complex. During installation, obstacle removal is important, as narrow passages and tight turns can reduce how effectively it covers the grass. The mower supports inclines up to 25 percent, which helps it handle sloped sections, although steeper areas still affect travel efficiency. A practical process is to map the entire lawn, then review coverage after a few mowing cycles.
Ease of Use and Storage
Easy day-to-day handling affects how consistently the lawn mower gets used, and it includes an LCD display for basic settings and status checks. Storage also matters because it is designed for lawns up to 500 m², with the ability to handle inclines of up to 25 percent. For routine operation, the cutting height can be set from 20 to 50 mm, then confirmed via the LCD. When the mowing season changes, it can be stored indoors.
Who Is This Lawn Mower For?
This lawn mower is for people who want an automatic mowing solution for a medium-sized lawn of up to 500 m². It suits households that prefer a scheduled mowing approach, where the mower can be set up and left to run rather than needing frequent manual mowing. The mower is designed to handle uneven areas to some degree and can work on inclines of up to 25 percent, making it suitable for gardens with gentle slopes. Cutting height is adjustable from 20 to 50 mm, which helps accommodate different grass types. Suitability is less clear for lawns that are larger than 500 m² or very irregular.
Where to Buy in the UK
In the UK, the Gardena SILENO City 500 (UK version with UK plug, 15002-28) should be bought from retailers that clearly show the exact model and UK plug variant, because ordering a different version can create compatibility issues. Start with Amazon UK, John Lewis, Currys, AO, and Argos, then cross-check listings for "UK plug" and the code 15002-28. Before purchase, verify that the product details and fitting instructions match the intended lawn area of up to 500m², since further specifics are not given here. Accessories and installation details should also be checked on the retailer page.
Frequently Asked Questions
Is the Gardena worth it?
For keeping a lawn tidy with the least hassle, the lawn mower (a robotic mower) does the job. Whether it suits you comes down to your lawn size, terrain and how much effort you want to put in. Check the current Amazon UK price, as mowers are often discounted in season.
What type of mower is the Gardena?
The lawn mower is a robotic mower - it cuts the lawn automatically on a schedule, so you barely touch it. Robots suit owners who want a hands-off, always-neat lawn; check the working area it covers matches your garden, and whether it needs a boundary wire or is wire-free.
What lawn size does this lawn mower cover?
The Gardena is rated for up to 500m² working area. With robotic mowers it's important the working area comfortably exceeds your actual lawn, allowing for shape and slope. If your garden is close to the limit, size up to a model rated for a larger area.
Is the Gardena SILENO City 500 easy to store?
Storage depends on the design - many electric and cordless mowers fold or stand upright to save space, while petrol and ride-on mowers need more room. The lawn mower is a typical example for its type; if space is tight, look for a compact-fold or upright-storage model like Flymo's EasiStore range.