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  1. Robot lawn mowers

Gardena Smart SILENO City 400

8,5/10 (19 reviews)
View all accessories
Gardena garden tools
  • Gardena Smart SILENO City 400 Main Image
  • Gardena Smart SILENO City 400 front
  • Gardena Smart SILENO City 400 left side
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 right side
  • Gardena Smart SILENO City 400 right side
  • Gardena Smart SILENO City 400 right side
  • Gardena Smart SILENO City 400 right side
  • Gardena Smart SILENO City 400 Main Image
  • Gardena Smart SILENO City 400 front
  • Gardena Smart SILENO City 400 left side
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
  • Gardena Smart SILENO City 400 product in use
Choose the better robot lawn mower that mows faster Choose the better robot lawn mower that mows faster
Gardena Sileno Life Better model
With the largest 22cm cutting width, you can mow more grass in one go and the robot lawn mower finishes faster.
Choose your robot lawn mower: 400 m2 | Gardena Smart System
Temporarily sold out
Not available in this version

Choose your robot lawn mower

Lawn surface
Lawn surface
Garden app
Garden app
Choose the better robot lawn mower that mows faster Choose the better robot lawn mower that mows faster
Gardena Sileno Life Better model
With the largest 22cm cutting width, you can mow more grass in one go and the robot lawn mower finishes faster.
Limited supply, order now
Pick up in store
855,-
Affordable Second Chance for 698,-
Limited supply, order now
Pick up in store

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View full comparison

Product information

Key specs

Lawn surface
400 m2
Maximum noise level
57 dB
Base station
Yes
Controlled via app
Yes
View all specifications

Pros and cons

According to our robot lawn mower expert
  • With the Gardena Smart System, you can control the robot lawn mower from anywhere and easily check the mowing route, even when you're not at home.
  • Thanks to the maximum incline of 35%, you can also mow hilly fields and pond edges.
  • With the LONA technology, you can easily determine the mowing zones and skip areas you don't want to mow.
  • Due to the small cutting swath and shorter battery life, the robot lawn mower can only mow lawns up to 400m2.
Product Expert robot lawn mowers

Description

With the Gardena SILENO City 400 robot lawn mower, you can keep lawns of up to 400m2 neat. You can easily control it with the Gardena Smart System app on your smartphone or tablet (iOS and Android) via WiFi. Even when you're not home, you can set the lawn size, the number of mowing days, and the start time. That way, the robot lawn mower gets to work at the time you choose. The motor has a 57dB maximum noise level, so it's very silent. That way, you and your neighbors barely notice it when it's mowing the grass. Thanks to the included perimeter wire, the robot lawn mower automatically goes to all mowing areas. While the Smart SILENO City 400 is mowing your grass, you have time for other things.
With the Gardena SILENO City 400 robot lawn mower, you can keep lawns of up to 400m2 neat. You can easily control it with the Gardena Smart System app on your smartphone or tablet (iOS and Android) via WiFi. Even when you're not home, you can set the lawn size, the number of mowing days, and the start time. That way, the robot lawn mower gets to work at the time you choose. The motor has a 57dB maximum noise level, so it's very silent. That way, you and your neighbors barely notice it when it's mowing the grass. Thanks to the included perimeter wire, the robot lawn mower automatically goes to all mowing areas. While the Smart SILENO City 400 is mowing your grass, you have time for other things.

Tips for using this product

Tips for using this product

Read our tips and find out all about how to set up your product and use it the right way.

View all support

Included by default

Included by default

Key specs

Lawn surface
400 m2
Maximum noise level
57 dB
Base station
Yes
Controlled via app
Yes
View all specifications

Complete your purchase

Reviews

19 reviews
8,5/10 (19 reviews)

Rating

9 reviews with 5 stars

8 reviews with 4 stars

1 reviews with 3 stars

1 reviews with 2 stars

0 reviews with 1 star

Most helpful reviews

7,6/10

Does a good job with nice results

  • Quiet
  • Easy installation
  • Factory software upon purchase
  • Lr
  • 27 July 2020
  • Automatically translated from Dutch
7,6/10

Extremely quiet, but setting schedule takes some effort

  • Very quiet
  • Device design
  • Manual is not clear enough
  • Laura heymans
  • 4 April 2020
  • Automatically translated from Dutch
8,8/10

Top product, the app also works fine

  • The robot itself is virtually plug & play
  • Operation is very simple
  • If you can speak of a downside! Installing the Perimeter Wire is a chore. We dug it in, but then you will never be bothered by it again.
  • René
  • 10 August 2023
  • Automatically translated from Dutch
9,6/10

Very satisfied with my purchase

  • Low noise
  • Easy to install
  • Could have been more staples
  • Mark
  • 5 June 2020
  • Automatically translated from Dutch
8,0/10

Silent user-friendly robot

  • Beautiful design
  • Works fine
  • Some figuring out how the boundary wires should be laid.
  • Kristof
  • 9 June 2023
  • Automatically translated from Dutch
9,2/10

Good product to work with.

  • Good instruction
  • Easy installation
  • Louis hoogvliet
  • 3 September 2021
  • Automatically translated from Dutch
9,6/10

Solid device, smart functions really add something

  • Such device
  • Handy App
  • Installation takes some time
  • Johan
  • 16 April 2023
  • Automatically translated from Dutch
8,8/10

Good device

  • Easy to install
  • Mows well
  • Douwe
  • 15 April 2023
  • Automatically translated from Dutch
8,4/10

outcome

  • does what it should do
  • a lot of work to lay cable properly
  • Arie
  • 15 May 2023
  • Automatically translated from Dutch
9,6/10

Super fun and handy robot lawn mower

  • Nice mower
  • Solid product
  • Labor-intensive installation of the wires in your garden
  • Pieter o
  • 24 September 2024
  • Automatically translated from Dutch
7,6/10

Does a good job with nice results

  • Quiet
  • Easy installation
  • Easy programming
  • Factory software upon purchase

Moderate mowing results in the beginning (a lot of turning and turning, irregularly mowed lawn with tufts of longer grass, despite many more hours per day than recommended setting), but evidently good improvement with software update from July 2020. After this, mower comes everywhere and is efficient and can be done according to advice keep your lawn looking beautiful for hours a day. Only leave clumps of grass in wet weather. Gardena's predecessor did not do this. Does its job quietly.

  • Lr
  • 27 July 2020
  • Automatically translated from Dutch
7,6/10

Extremely quiet, but setting schedule takes some effort

  • Very quiet
  • Device design
  • Manual is not clear enough

We had some trouble setting up the robotic lawnmower. The wiring went well, but setting the schedule of how it automatically departs is complicated and is also poorly explained in the manual. Take enough time for this. We can't say anything about the mowing performance yet.

  • Laura heymans
  • 4 April 2020
  • Automatically translated from Dutch
8,8/10

Top product, the app also works fine

  • The robot itself is virtually plug & play
  • Operation is very simple
  • Our lawn looks perfect after just one week
  • If you can speak of a downside! Installing the Perimeter Wire is a chore. We dug it in, but then you will never be bothered by it again.

After you have installed everything, you will be mowing the lawn in no time.

  • René
  • 10 August 2023
  • Automatically translated from Dutch
View all 19 reviews

Insure your robot lawn mower

You can select the Backup Plan below in your shopping cart. It will protect your brand new robot lawn mower against damage and/or theft.

Gardena Smart SILENO City 400
  • 3-year Backup Plan
    75,00 one-time payment

Specifications

Product

Product number
944117
Manufacturer code
19605-66.000.00
Brand
Gardena
Warranty
3 years
Processing of your defect
Via Coolblue
Old product returned for free
Yes

Physical properties

Weight
11,9 kg
Depth
55 cm
Height
23 cm
Width
38 cm
Cutting deck material
Plastic

Mowing properties

Lawn surface
400 m2
Cutting width
16 cm
Cutting height
20 - 50 mm
Mulching function
Yes
Maximum noise level
57 dB
Maximum incline
35 %

Functionalities

Systematic
Area demarcation
Yes
Length of included perimeter wire
150 m
Area delimitation type
Perimeter wire
Distance sensors
Yes
Remote controllable
Yes
Input
Via WiFi and app

Power supply

Power source
Battery
Battery technology
Lithium-ion
Battery/battery capacity
2 Ah
Battery / battery voltage
18 V

Related products

Related products

Gardena garden tools
Garden tools with battery
Gardena Smart System
Robot lawn mowers for a small garden
All Robot lawn mowers

This is the one

Gardena Smart SILENO City 400
Gardena Smart SILENO City 400
In the version: 400 m2 - Gardena Smart System
855,-
Limited supply, order now
Affordable Second Chance for 698,-
In my shopping cart In my shopping cart
Gardena Smart SILENO City 400
855,-
In my shopping cart In my shopping cart
View comparison
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