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Robot Lawn Mowers

What to know about Sileno City 500

The Gardena SILENO City 500 is aimed at homeowners who want a neat lawn without regular manual mowing. Its 500 m² area rating makes it a good fit for small to medium lawns, especially urban gardens or layouts with tighter passages. Gardena positions it as a quiet, weather-ready mower that can work automatically once the boundary wire and schedule are set up. Its biggest strengths are convenience and low disruption. The mower returns to its charging station automatically, cuts with three small pivoting blades, and runs at a low perceived noise level of 57 dB(A), so it is less intrusive than a conventional mower. Bluetooth app control helps with setup and scheduling, while the onboard display gives an alternative way to adjust settings. The SILENO City 500 is also practical for more awkward gardens. Gardena highlights its ability to handle narrow areas, tight corners, and slopes up to 35% inside the installed mowing area. The IPX5 rating and hose-cleanable design are useful if the mower picks up wet clippings or dirt during regular use. There are trade-offs. This is not a wire-free robot mower: it uses a physical boundary wire, so installation takes planning and time. Bluetooth control is local rather than true long-range smart control, unless you choose a separate smart-system version. The 16 cm cutting width is suitable for maintenance mowing but not fast recovery of overgrown lawns, and the 500 m² rating should be treated as an upper limit rather than a reason to buy it for larger spaces. Overall, the Gardena SILENO City 500 is a strong choice if your lawn is within its size limit and you want a quiet, established boundary-wire robot mower from a major garden brand. It is less appealing if you want GPS-style wire-free setup, remote control from anywhere, or a mower for larger, rougher, or highly overgrown lawns.

  • Homeowners with lawns up to 500 m² who want automated maintenance mowing.
  • Buyers with small or complex gardens, including narrow passages and tight corners.
  • People who value quiet operation and want a mower that can run with minimal disturbance.
  • Users comfortable installing or paying someone to install a physical boundary wire.
  • Quiet 57 dB(A) operation is neighbour-friendly and suitable for regular scheduled mowing.

Specs

Brand
Gardena
Product name
SILENO City 500
Category
Robotic lawn mower
Area capacity
500 m²
Boundary type
Physical wire
App control
Gardena Bluetooth App, up to 10 m range
Charging system
Automatic
Typical charging time
60 min
Typical mowing time per charge
65 min
Maximum slope inside installation
35%
Maximum slope at boundary
10%
Cutting system
3 pivoting razor blades
Cutting height
20-50 mm
Cutting width
16 cm
Sound level perceived
57 dB(A)
Protection rating
IPX5
Display
Monochrome graphical display 2.1 in
Firmware update
USB
Mean energy consumption at maximum use
4 kWh per month
Daily active time required at maximum area capacity
12 h
PIN code
Yes
Lift sensor
Yes
Alarm
No
Included loop wire
150 m
Included stakes
200 pcs
Low-voltage cable
5 m
Weight
7.3 kg
Dimensions
55 x 38 x 23 cm

Pros

  • Quiet 57 dB(A) operation is neighbour-friendly and suitable for regular scheduled mowing.
  • Designed for lawns up to 500 m², with automatic charging and scheduling.
  • Handles slopes up to 35% inside the installation area.
  • Bluetooth app setup and onboard controls make scheduling straightforward.
  • IPX5-rated body can be cleaned with a garden hose.
  • Includes boundary wire and installation stakes in the standard set.

Cons

  • -Requires a physical boundary wire, so installation is more involved than wire-free robot mowers.
  • -Bluetooth control is short-range; it is not the same as full remote smart control from anywhere.
  • -16 cm cutting width is best for frequent maintenance, not quickly tackling overgrown grass.
  • -500 m² capacity may be limiting for larger lawns or properties with multiple separated mowing zones.
  • -Official specifications list PIN protection and lift sensor, but no alarm on the referenced non-smart model.

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Gardena Sileno City 500 | Robot Mower Shop