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11 Best Robot Lawn Mowers in 2021

Mowing the lawn isn’t everyone’s favorite task – it’s time-consuming and repetitive, even if you have one of those riding mowers. So, it’s no surprise to see that robot lawn mowers are becoming a popular, must-have gardening tool! 

Here are our reviews of the best robot lawn mowers on the market, as well as what to consider when buying one, whether or not it’s the right mower for you, and much more.

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11 Best Robot Lawn Mowers in 2021

11 Best Robot Lawn Mowers for 2021 | Buying Guide

Robot Lawn Mowers are electric lawn mowers powered by rechargeable lithium-ion batteries

Source: Amazon

These are electric lawn mowers powered by rechargeable lithium-ion batteries. They are fully automatic, and when the battery power runs low, they make their way back to the charging station on their own.

They run on very little electricity, emit no fumes and are very efficient, making them a great eco-friendly choice for maintaining your lawn.

You contain them to your lawn using a low-voltage wire that is set around the perimeter, and this will stop the mower from wandering off out of your property.

You can use this wire to cordon off other hazards like flower beds, patios, delicate shrubs, swimming pools and ponds.

These machines use sensor technology to detect obstacles in their path, stopping and changing direction when a tree or rock is ahead of them.

Why Buy a Robotic Lawn Mower?

Why Buy a Robotic Lawn Mower

Source: Amazon

There are plenty of great reasons to buy a robot lawn mower!

  • It saves time – You no longer have to allocate your morning to the time-consuming job of mowing the lawn yourself, which means you get your weekend back.

    You can also schedule when your mower will work, so the grass gets cut while you’re at work and is ready to enjoy when you get home.
  • They deliver great results – Robotic mowers work continuously, so your lawn is always trimmed to the right height. Using an ordinary mower, you might trim the grass every one to two weeks, which means it gets long, leggy and overgrown before it is cut back severely, which can lead it to dying off or getting burned, especially in the growing season.

    Continuous mowing each and every day means a healthier, thicker lawn for you to enjoy. 
  • Easy to use – Robotic mowers are electric, using rechargeable battery packs to provide power. This means no maintenance, no need to fetch and store fuel and oil, and no costly services.

    Some even have apps that you can use to control your lawn robot on your smartphone while you relax!
  • Eco-friendly and quiet – Because they use electricity, they run very quietly and emit no fumes, so your neighbors and your environment will thank you.
  • No grass clippings – Because the mower clips continuously, the clippings are so small that they drop down into the grass, supplying your lawn with nutritious mulch, keeping your lawn neat and solving the issue of dealing with grass clippings all at the same time.
  • Affordable – Robotic lawn mowers aren’t cheap to buy, but they are more affordable to run than gas lawn mowers over the long term.

    That’s because you don’t have to pay for fuel, servicing or maintenance.

Do Robot Lawn Mowers Really Work?

Can I Use a Robotic Lawn Mower on Hills or Uneven Ground

Source: Amazon

Yes! On an everyday, average or small-sized lawn, a robot lawn mower is very effective – even when it’s only used a few times a week. The tiny clippings provide mulch for your lawn and ensure your lawn is kept tidy and at the perfect height all the time. 

However, if you have a very large property or very dense grass or weeds, we’d suggest you use a more powerful petrol mower to cut the lawn into shape, level and under control.

Once it’s established, your robot mower can take over for everyday trimming.

How Long Do Robotic Lawn Mowers Last?

This depends on the quality of the product you buy. However, most leading manufacturers agree that a robot lawn mower will last about 10 years – around the same amount of time as a gas or electric lawn mower.

Can I Use a Robotic Lawn Mower on Hills or Uneven Ground?

These mowers work best on flat, even surfaces, so it’s a good idea to prepare your lawn before you buy one. Most manufacturers say that their mowers will operate on slopes of up to 35%, or up to 15-20 degrees.

What to Consider When Buying a Robot Lawn Mower

Weather sensors are another great addition, preventing robot lawn mower from cutting grass in wet or rainy weather

Source: Amazon

As with every gardening tool, there are several things to consider when buying a robot mower that will help you find the right machine for your lawn.

  • Lawn size and battery capacity – The larger your lawn, the more often your mower will have to charge before it can complete its job, so be sure to check the battery capacity and manufacturer recommendations regarding lawn size.

    Entry-level machines are really only suited to smaller lawns, but there are more advanced robot lawn mowers for much larger lawns.
  • Lawn gradients – More powerful motors are needed for steeper gradients, and if you buy an underpowered robot lawn mower, it’s going to struggle to mow any slopes.

    Here’s a guide on how to calculate the slope of your lawn so you can check the results against manufacturer recommendations.
  • Safety features – These mowers are designed to be very safe, and some great safety features to look for include lift and tilt sensors that stop the cutting action and recessed cutting blades. This makes them much more pet and child-safe.
  • Controls – Look for mowers that have a control panel where you can adjust everything from cutting height and cutting schedule.

    Another great feature is Wi-Fi capability, which allows you to control the mower through a smartphone app. Weather sensors are another great addition, preventing the mower from cutting grass in wet or rainy weather.
  • Weather protection – Because they work automatically, it’s important that they have good weather and dust protection. However, it is usually a good idea to store it in a shed or garage during severe storms, snow or freezing conditions.
  • Security – To keep your mower secure, stop unauthorized people from changing the settings or prevent it from getting lost or stolen, choose one with good security features.

    This includes PIN code locks, alarms and GPS tracker functions.
What to Consider When Buying a Robot Lawn Mower

Source: Amazon

The Best Robot Lawnmowers of 2021

WORX WR140 Landroid M 20V Power Share Robotic Lawn Mower

Source: Amazon

This is a tough, durable little robot mower with a lot to offer. In terms of tech, it offers GPS and anti-theft capabilities, exceptional control through the mower app, custom mowing schedules, and weather and obstacle sensors – all boosted by a built-in Wi-Fi extender.


It navigates narrow pathways easily so there’s less trimming for you to do later, and it can cut lawns of ¼ acre. The best part is that you don’t need to install a boundary wire – it’s all digital!

Pros

  • Very good cutting performance
  • No physical boundary wire needed
  • Quiet operation
  • Wi-Fi and GPS capabilities
  • User-friendly app
  • Anti-theft functions
  • Adjustable cutting height
  • Self-charging
  • Very affordable price

Cons

  • No remote control capabilities over the app
Husqvarna Automower 115H Robotic Lawn Mower

Source: Amazon

If you have a small yard with up to 0.4 acres of lawn and love smart technology, this is a great option! It’s a glossy, great-looking machine that is exceptionally quiet to run at just 58 decibels (about the same as an air conditioner), and can cut grass at heights of 2-3.6 inches tall.

It comes with plenty of boundary wire, a high-efficiency rechargeable battery, intelligent obstacle handling technology, and weighs just 20.7lbs.

Pros

  • User-friendly interface
  • Mobile app
  • Weather-resistant (will work in the rain)
  • Self-charging
  • Fully customizable with remote control
  • Voice command capabilities
  • Integrated with Google Assistant and Alexa

Cons

  • More expensive
  • Installation carries additional costs
Husqvarna 450XH Automower Robotic Lawn Mower

Source: Amazon

This is one of the more advanced robot mowers for large lawns, and it can cut up to 1.25 acres with ease. It has GPS tracking/navigation, anti-theft alarm, PIN code security and LED headlights for mowing at night.


It can also cut much taller grass than most competitors, handling 3.6 inches with ease. Because it is more powerful than other options, it’s much bigger and heavier too at 62.2 lbs.

Pros

  • Powerful motor
  • Capable of mowing 1.25 acres
  • Weather resistant
  • Great security features
  • Great mobile app
  • Integrates with Alexa, Google and IFTTT
  • Self-charging

Cons

  • Very expensive
Robomow RS622 Battery Powered Robotic Lawn Mower

Source: Amazon

Another good option for larger lawns, this robotic mower can easily handle lawns of up to ½ acre as well as terrain of up to 20 degrees.


It can be set up for multiple mowing zones, it fully integrates with Alexa, and has a personalized mobile app that lets you manage all your mowing remotely.


It’s easy to set up, has a built-in rain sensor and solid security/anti-theft features.

Pros

  • Good for lawns up to ½ acre
  • Self-charging
  • Security features
  • Alexa integration
  • Good mobile app
  • Cuts beyond the wheel for improved edging

Cons

  • Poor support
  • Expensive
WORX WR153 Landroid L 20V Power Share Robotic Lawn Mower

Source: Amazon

If you liked the sound of the WORX140 but have a larger lawn, then this may be the robot lawn mower for you.


It cuts up to ½ acre lawns, has Wi-Fi capabilities, an adjustable cutting height of 1.5-4 inches, the same great cut-to-edge features for less trimming, and can handle inclines of up to 20 degrees.


It is also GPS enabled, with a useful Find My Landroid feature.

Pros

  • Very good cutting performance
  • Cuts lawns up to ½ acre
  • Quiet operation
  • Wi-Fi and GPS capabilities
  • User-friendly app
  • Anti-theft functions
  • Adjustable cutting height
  • Self-charging
  • Very affordable price

Cons

  • No remote control capabilities over the app
Robomow RS630 Battery Powered Robotic Lawn Mower

Source: Amazon

With wide cutting path, dual cutting blades and a 22-inch cutting width, this is a great all-rounder suited to yards of up to ¾ of an acre in size with slopes of up to 20 degrees.


It can be set for different mowing zones, has a good mobile app and is integrated with Alexa. It also has a built-in rain sensor and solid anti-theft features.

Pros

  • Good for lawns up to ¾ acre
  • Self-charging
  • Security features
  • Alexa integration
  • Good mobile app
  • Cuts beyond the wheel for improved edging

Cons

  • Poor support
  • Expensive
  • Heavy at 86.8 lbs.
Gardena 4069 R80Li Robotic Lawnmower

Source: Amazon

This is a no-nonsense, well-built robotic lawnmower with all the basic functionality that most people will need.


With an adjustable cutting height of 0.7-2 inches, it works in the rain, has good anti-theft features and runs very quietly.


It’s easy to install and maintain, safe for pets and children, and has a long-lasting lithium-ion battery.

Pros

  • Fairly affordable
  • Mows up to 9000
  • Self-charging
  • Easy to install
  • Easy to program

Cons

  • No cutting height over 2 inches
  • No Wi-Fi capabilities or app integration
Husqvarna AUTOMOWER 310, Robotic Lawn Mower

Source: Amazon

This is a great-looking, fairly lightweight robotic mower for anyone who likes high-tech gadgets. With a user-friendly app and Bluetooth connectivity, you can run your mower schedule and make adjustments from your smartphone.


It works in the rain and is designed for lawns of up to .25 acres and 22 degree inclines, and can handle grass up to 2.4 inches tall.

Pros

  • User-friendly interface
  • Mobile app
  • Weather-resistant (will work in the rain)
  • Self-charging
  • 2-year limited warranty

Cons

  • More expensive
  • No Alexa or Google Home integration
  • Installation carries additional costs
STIHL RMI 422 P iMOW® robotic mower

Source: Stihl.com

This smart robot lawn mower is easy to set up, durably built and lightweight. It cuts quickly and efficiently, managing medium-sized lawns easily.

 

It offers intelligent performance, remembering how much it has mown and how much it has left to do, determines for itself when the best time is to mow within it’s set schedule, and will avoid the rain and then make up for it later when it is dry.


It has a PIN code security system and uses the iMow app to make it easy to customize controls and settings.

Pros

  • Good value
  • Autonomous functions to learn it’s way around the garden
  • Long 5 year warranty
  • User-friendly app
  • Can mow up to 1/3 acre
  • Quiet at 60 decibels
  • Maximum slope of 40%

Cons

  • No connectivity for remote control
Honda Miimo HRM520

Source: Powerequipment.honda.com

Good for medium to large lawns, the Honda robotic mower can cover up tot 0.75 acres of grass at slopes of up to 25 degrees.


It offers adjustable cutting heights from 08-2.4 inches, has quick turn technology for tight corners, and cleans up the edges of your lawn once a week for an exceptionally neat result.


It’s easy to set up, has a 2-year warranty and runs quietly, so it can work at night. With good security features including a PIN code and alarm, it’s a great option for most homeowners.

Pros

  • Fine mulching capabilities
  • Very quiet
  • Lightweight
  • Good security and safety features
  • 2-year warranty

Cons

  • Expensive
  • No app control or connectivity
  • Additional installation costs
  • No rain sensor
MOWRO RM24 Robotic Lawn Mower

Source: Homedepot.com

If you have a small yard and a small budget, this is a great option. Well-built and pre-programmed to run every 2 days, it can handle lawns of up to ¼ acre.


Cutting height is adjustable between 1-2.5 inches, and it can manage slopes of up to 30 degrees, which is impressive.


It’s a simple, but effective robot mower that has an in-built rain sensor that’s perfect for the set-and-forget homeowner.

Pros

  • Once set up it will run automatically
  • Good for sloped yards
  • Quiet, brushless motor (65 decibels)
  • Safe for pets and children
  • Good value for money
  • Easy to set up

Cons

  • No connectivity or app
  • Not good for large lawns

Our Top Pick for the Best Robot Lawn Mower of 2021!

WORX WR153 Landroid L 20V Power Share Robotic Lawn Mower

Source: Amazon

Moderately priced in comparison to competitors with similar features, the WORX Landroid WR153 is our top choice as best robot lawn mower for 2021!

It’s robustly built with a 9-inch cutting width and the ability to trim nice and close to all the edges, navigating narrow paths easily.

You can set custom mowing schedules and its GPS tech allows you to track and find your mower if it’s ever stolen or wanders off.

It tackles garden obstacles easily, has an in-built rain sensor, brings itself home to charge and has digital fencing, so no boundary wire is needed!

Sit Back and Relax with the Best Robot Lawn Mower!

Make your weekends yours again with a feature-rich, powerful robotic lawn mower that takes this time-consuming chore off your hands for good.

Eco-friendly, quiet and fully automatic, these compact machines are the perfect choice for small to medium sized lawns.

When buying a robot lawn mower, remember that you may have to prepare your lawn by reducing bumps and ditches the mower can get stuck in.

Look for a machine that is built for your size lawn and gradient, that has safety features and anti-collision control, and offers custom settings that you can input via the control panel or an app.

Get ready to enjoy mowing the lawn again when you have the best robot lawn mower!

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