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  1. Robot lawn mowers

Gardena Smart SILENO City 400

6,1/10 (3 reviews)
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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
Coolblue's Choice

Our choice for a smart robot lawn mower for a small lawn

  • 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
Temporarily sold out
Not available in this version
Lawn surface
Lawn surface
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.
797,-
In stock
Pick up in store
797,-
In stock
Pick up in store

Similar and better products

  • Current product
  • 797,-
  • 899,-
  • 999,-
  • 829,-
  • 1.179,-
Lawn surface
  • 400 m2
  • 500 m2
  • 800 m2
  • 700 m2
  • 1250 m2
Maximum noise level
  • 57 dB
  • 58 dB
  • 57 dB
  • 63 dB
  • 60 dB
Base station
  • Yes
  • Yes
  • Yes
  • Yes
  • Yes
View full comparison

Product information

Coolblue's Choice

This product is our choice for a smart robot lawn mower for a small lawn.
Coolblue's Choice

Key specs

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

Complete your purchase

Reviews

3 reviews
6,1/10 (3 reviews)

Rating

0 reviews with 5 stars

1 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

Nice machine but interface not OK

  • nice device
  • complicated interface
  • Francesco
  • 15 June 2024
  • Automatically translated from Dutch
4,8/10

Broken software

  • looks nice
  • smart application does not work
  • Francesco
  • 31 May 2024
  • Automatically translated from Dutch
7,6/10

Nice machine but interface not OK

  • nice device
  • complicated interface

I have had the machine for three weeks. Installing the gateway and app is particularly challenging because the manual is quite limited and cryptic. The app itself is also not very clear to use, not in terms of explanation, but also in terms of 'interface'. You can create zones where the mower should or should not go and they therefore need separate starting points. If you do not let the mower mow in a zone once (for example because there are garden chairs), that zone will then lose its starting point, which you will then have to create again separately. That is always quite a hassle. You would expect that you can create zones and then 'tick' whether or not to mow here, for example also adding the day. But that's not how it works. Technically it is all possible, but Gardena can still make progress in terms of ease of use in the app.

  • Francesco
  • 15 June 2024
  • Automatically translated from Dutch
4,8/10

Broken software

  • looks nice
  • smart application does not work

The Sileno City 400 must be operable via both Bluetooth and WiFi. I have not yet managed to get this software to work, neither via WiFi (with router) nor via Bluetooth on the device itself. Gardena has a telephone number you can call for support, but if you call it, you will receive a band stating that the number is no longer in service (Sic). The Gardena manual does not say a word about how to 'connect' the app. This is not necessary with most devices you buy. Everything is 'plug and play'. But not at Gardena. They deceive you with a nice 'smart' marketing story, but the software is still in its infancy.

  • Francesco
  • 31 May 2024
  • Automatically translated from Dutch
View all 3 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

Free robot lawn mower garage with a GARDENA SILENO robot lawn mower

Free robot lawn mower garage with a GARDENA SILENO robot lawn mower
If you purchase a GARDENA SILENO robot lawn mower between 1 March 2025 and 31 May...
View more information
If you purchase a GARDENA SILENO robot lawn mower between 1 March 2025 and 31 May 2025, you can request a free garage from GARDENA. You can register your promotional product for the GARDENA promotion until 31 May 2025. Go to the promotional Terms and Conditions (PDF) for more information.

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 Smart System
Gardena garden tools
Garden tools with battery
Robot lawn mowers with WiFi
All Robot lawn mowers

This is the one

Gardena Smart SILENO City 400
Gardena Smart SILENO City 400
Lawn surface: 400 m2
797,-
In stock
In my shopping cart In my shopping cart
Gardena Smart SILENO City 400
797,-
In my shopping cart In my shopping cart
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