best-robot-mowers-for-hills-and-slopes

3 Best Robot Lawn Mowers for Hills and Slopes in 2023

In Lawn & Garden by Tim Brennan

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In this article, I provide a thorough review of the best robot lawn mowers for hills and slopes you can get right now. My three choices are from the top manufacturers of these cool robotic landscapers from around the world.

My top three picks for the best robot lawn mowers for hills and slopes are:

You can click on any of the links above to jump down to my specific review for that product. Or read on for a brief intro and side-by-side comparison table.


Do Robotic Lawn Mowers Work on Slopes?

best robot lawn mowers for hills
Robot lawn mowers are becoming an increasingly popular smart home tech solution for homeowners looking to free up time and minimize the drudgery of lawn maintenance.

Robot lawn mowers are gaining popularity as smart home tech solutions, allowing homeowners to save time and reduce lawn maintenance efforts. The robotic lawn mower market is projected to reach $1.4 billion by 2025, up from $538 million in 2017.

The effectiveness of robot lawn mowers on hills and slopes depends on the specific model and yard conditions. Some can handle significant slopes, but it’s essential to check manufacturer specifications for slope compatibility.

In this blog post, I review the best robot lawn mowers for hills and slopes, rated for 8.5% to 45% inclines, based on features, customer satisfaction, and performance. It includes a comparison table, product details, a buyer’s guide, and answers to common questions. I hope this will help you confidently choose the right robot mower for your hilly yard.

In the following sections of this guide, you’ll find a side-by-side comparison table, key features, advantages, and shortcomings of each product, and a short buyer’s guide and answers to common questions about robotic lawn mowers.

With this information, you can confidently select the perfect robot lawn mower to conquer the hills and slopes in your yard.


Robot Mowers for Hills & Slopes Comparison Chart

Here is a comparison table of the best robot lawn mowers for hills and slopes that you buy right now.

WORX Landroid L 20V Robotic Lawn Mower w/GPS 1/2 Acre / 21,780 Sq.Ft Power Share - WR153 (Battery & Charger Included)10
GARDENA 15201-41 SILENO Minimo - Automatic Robotic Lawn Mower, with Bluetooth app and Boundary Wire, one of The quietest in its Class, for lawns up to 2700 Sq Ft, Made in Europe, Grey10
Husqvarna 967622505 Automower 430X Robotic Lawn Mower, 3/4 acre capacity10
Worx Landroid
Gardena Silano
Husqvarna Automower
Yard Size
Medium: Up to 1/2 Acre
Small: Less than 1/4 Acre
Large: Up to 3/4 Acre
Slope
Up to 20 degrees
Up to 19 degrees
Up to 20 degrees
Mower Dimensions
24.8"D x 17.76"W x 9.49"H
21.65 x 14.96 x 9.05 Inches
28.35"D x 22.05"W x 12.2"H
Mower Weight
25 lbs.
17 lbs
28.7 lbs.
Cutting Height
1-1/2" to 4"
0.8 - 2 Inches
0.8” – 2.4”
Cutting Width
9 inches
6.3 inches
11 inches
Charge Time
N/A Works over the course of a week but about 30-40 minutes
60-75 minutes
50 minutes
Runtime
30-40 minutes
65 minutes
145 minutes
Smartphone App
Battery
Lithium Ion Rechargeable
Lithium Ion Rechargeable
Lithium Ion Rechargeable
Theft and Weather Protection
Sound output
63 decibels
57 decibels
57 decibels
WORX Landroid L 20V Robotic Lawn Mower w/GPS 1/2 Acre / 21,780 Sq.Ft Power Share - WR153 (Battery & Charger Included)10
Worx Landroid
Yard Size
Medium: Up to 1/2 Acre
Slope
Up to 20 degrees
Mower Dimensions
24.8"D x 17.76"W x 9.49"H
Mower Weight
25 lbs.
Cutting Height
1-1/2" to 4"
Cutting Width
9 inches
Charge Time
N/A Works over the course of a week but about 30-40 minutes
Runtime
30-40 minutes
Smartphone App
Battery
Lithium Ion Rechargeable
Theft and Weather Protection
Sound output
63 decibels
GARDENA 15201-41 SILENO Minimo - Automatic Robotic Lawn Mower, with Bluetooth app and Boundary Wire, one of The quietest in its Class, for lawns up to 2700 Sq Ft, Made in Europe, Grey10
Gardena Silano
Yard Size
Small: Less than 1/4 Acre
Slope
Up to 19 degrees
Mower Dimensions
21.65 x 14.96 x 9.05 Inches
Mower Weight
17 lbs
Cutting Height
0.8 - 2 Inches
Cutting Width
6.3 inches
Charge Time
60-75 minutes
Runtime
65 minutes
Smartphone App
Battery
Lithium Ion Rechargeable
Theft and Weather Protection
Sound output
57 decibels
Husqvarna 967622505 Automower 430X Robotic Lawn Mower, 3/4 acre capacity10
Husqvarna Automower
Yard Size
Large: Up to 3/4 Acre
Slope
Up to 20 degrees
Mower Dimensions
28.35"D x 22.05"W x 12.2"H
Mower Weight
28.7 lbs.
Cutting Height
0.8” – 2.4”
Cutting Width
11 inches
Charge Time
50 minutes
Runtime
145 minutes
Smartphone App
Battery
Lithium Ion Rechargeable
Theft and Weather Protection
Sound output
57 decibels

Last update on 05/14/2023 / Affiliate links / Images from Amazon Product Advertising API


#1 – Best Overall: Worx Landroid

WORX Landroid best robot lawn mowers for hills

The WORX WR155 Robotic Mower is the most budget-friendly option on this list. Even with its lower cost, you can still expect it to cover yard sizes of up to 1/2 an acre with a slope inclination of 35%, which is just slightly less than the more expensive Robomow RS630.

This smart lawnmower lets you control it via a smartphone app or voice commands via Amazon Alexa or Google Home devices.

The Landroid also features a noise-reducing motor design, LED headlights, and rubber bumpers. The bumpers are combined with the included boundary wire to keep your mower contained and avoid collisions with kids and pets.

The bottom line: This is the best choice here if you have steeper hills and slopes in your yard.

Pros

  • Solid battery life of up to 100 minutes per mow.
  • Uses same battery as other Worx tools so they are hot swappable.
  • Affordable with advanced features found on more expensive mowers
  • Anti-collision sensor prevents this mower from crashing into obstacles.
  • It includes antigravity sensors to prevent it from sliding down slopes as well.
  • Boundary wire-based DIY installation.
  • 3-year warranty is a full-year longer than many similar mowers in this class

Cons

  • A few customers have reported that the app crashes occasionally.
  • Limited to yards under ½ an acre.

Best Robot Lawnmowers for Hills Video Review

Hanging Out with Mike has a great YouTube video demo and testimonial to the Landriod’s effectiveness. This is super informative. I am a big fan too, Mike.

You can also check out this video from LinusGillander of how well the Landroid performs on steep slopes:

Where To Buy It

WORX Landroid L 20V Robotic Lawn Mower w/GPS 1/2 Acre / 21,780 Sq.Ft Power Share - WR153 (Battery & Charger Included)10
  • [CUTS UP TO ½ AN ACRE] The Landroid L with 9” cutting disc is our model designed to cut up to ½ an acre. Just set the charging base, lay down the boundary wire, measure your lawn with the app, and let it mow
  • [FIND MY LANDROID] The Find My Landroid GPS cellular module is included with this model ($299 value). If Landroid is ever removed from your property the app will notify you immediately and give you the ability to track it if stolen
  • [SAME BATTERY, EXPANDABLE POWER] The same battery powers over 75+ 20V, 40V, and 80V lifestyle, garden, and power tools in the Power Share family

Last update on 05/14/2023 / Affiliate links / Images from Amazon Product Advertising API


#2 – Runner-Up: Husqvarna Automower

best robot lawn mowers for hills

The Husqvarna 430X Automower has the best slope capacity out of my three pics of the best robot lawn mowers for hills at slopes. The company describes the mower as being ideal for “highly complex medium to large lawns” with slopes up to 24°. This is a decent-sized hill similar to one in the featured image on this post.

This is the most advanced mower in the Husqvarna line, and it includes GPS navigation and tracking as well as pin code security protection. Moreover, it can cover 3/4 of an acre, making it a good choice if you have a moderate-sized lawn. This model also includes special features like LED headlights, rubber bumper, and orange X-Line wheel caps.

Pros

  • The 45% inclination coverage makes this an excellent option for steep hills and slopes in your yard
  • An added advantage of this lawn mower is that it has one of the longest runtimes of robot mowers on the market. It can mow for up to 145 minutes on a single charge.
  • It only takes 50 minutes to recharge, which is the shortest charging period of any device here.
  • Three sharp blades make cutting high grass more efficient on slopes as well. By cutting a width of 9.45” and a height of 2.4”, this lawn mower can handle tough spots easily.
  • In addition to tracking a stolen mower via GPS feature, you can set a PIN code on this device that can enable or disable it in the event of theft.
  • It is also the quietest device here with a total volume of just 57 decibels.

Cons

  • It is more expensive than the other two models here.
  • If areas of your yard have grass longer than 2.4”, you might need to run it again over the area.

Video Review

DIYDanielle does a nice job reviewing this mower in laypersons terms over on YouTube. I will embed her review below for your convenience.

Where To Buy It

Husqvarna 967622505 Automower 430X Robotic Lawn Mower, 3/4 acre capacity10
  • Working area capacity (±20): 0.8 acre
  • Battery type: Li-Ion
  • Typical charging time: 65 min

Last update on 05/14/2023 / Affiliate links / Images from Amazon Product Advertising API


#3 – Small Yards: Gardena Silano

Gardena Silano best robot lawn mowers for hills

The Gardena Silano robot mower is an excellent choice for homeowners with small slopes in their yards. With its ability to handle slopes up to 35% (or 19.3 degrees), this compact and powerful machine is perfect for maintaining lawns with moderate inclines.

Its intelligent navigation system ensures efficient and even cutting, while the quiet motor allows for unobtrusive operation during the day or night. One of the standout features of the Gardena Silano is its SensorCut System, which delivers precise and even cuts without leaving noticeable wheel marks.

The mower is also equipped with an easy-to-use programming interface and a mobile app, allowing you to customize mowing schedules and monitor the mower’s progress remotely.

The Gardena Silano robot mower is an ideal solution for those with small slopes in their yards. Its slope-handling capability, combined with its innovative cutting system and user-friendly controls, make it a reliable and efficient option for maintaining a beautifully manicured lawn.

Pros

  • Handles slopes up to 35% (19.3 degrees) with ease.
  • SensorCut System ensures precise, even cutting.
  • Quiet operation suitable for day or night mowing.
  • User-friendly programming interface and mobile app.
  • Intelligent navigation for efficient lawn coverage.

Cons

  • May struggle with larger or steeper slopes.
  • Requires regular maintenance and blade replacement.
  • Limited cutting width compared to some competitors.

Video Review

Andreas M has a nice review of this Gardena vs Worx Landroid robot mowers over on YouTube.

Where To Buy It

GARDENA 15201-41 SILENO Minimo - Automatic Robotic Lawn Mower, with Bluetooth app and Boundary Wire, one of The quietest in its Class, for lawns up to 2700 Sq Ft, Made in Europe, Grey10
  • Highly intelligent robotic lawn mower: GARDENA SILENO Minimo automatically mows yards up to 2700 sq ft streak-free, with easy connectivity via Bluetooth EasyApp Control, Auto-Schedule and EasyConfig
  • Precise, silent navigation: Relax in your backyard while SILENO Minimo expertly navigates narrow spaces and tight corners while quietly cutting your grass with one of the quietest in class noise levels of 57 dbA
  • Safe and reliable: The boundary wire ensures the Robotic Lawn Mower only mows the areas specified while collision sensors ensures the mower operates safely with no accidents or damage to your garden

Last update on 05/14/2023 / Affiliate links / Images from Amazon Product Advertising API


Best Robot Lawn Mowers for Hills & Slopes: Buying Guide

There are several factors to remember while looking for the best robot lawn mowers for hills and slopes.

Slope Inclination Capacity

best robot lawn mowers for hills

Since you are looking at the best robot lawn mowers for hills and slopes, in particular, you will certainly need to consider how much of an inclination your mower can handle and manage.

This will then ensure that your mower does not stop in the middle of a steeper slope. Out of my three picks here, the best capacity is 45%, which belongs to Worx and Husqvarna.

However, all three options here were designed to mow decent-sized hills and slopes of 8.5% to 45%.

Size of Your Yard

Another important factor you must consider is how many acres your lawnmower can cover. This, of course, depends on the size of your own lawn.

My picks here are ideal for ½ to ¾ acre lawns.1/2 acre mowers will also handle smaller lawns nicely. If your lawn extends beyond 1 acre, you may want to consider other options for larger-sized yards.

Related: Husqvarna vs Robomow vs Worx

Battery Life

How long your mower’s battery can run, and its capacity also has quite a bit of an influence on the efficiency of your lawnmower. Generally, it might be a good idea to go for newer models as these usually perform better.

A similar consideration here is how long the battery will take to recharge. In the case of robotic mowers, they automatically go to their charging stations once they sense that they are running out of battery. Once they are there, they might take a certain amount of time to charge, which could be anywhere between an hour to two hours.

Blades

Different brands of the best robot lawnmowers for hills and slopes use different types of blades.

Some blades are ideal for some types of grass than others. Consult the manufacturer specifications for the types of blades that are ideal for your lawn.

best robot lawn mowers for hillsA standard number of blades that mowers generally tend to have are two to three.

Typically, they have individual motors to control and power each blade. They must also be sharp enough to cut through all kinds of lengths and widths of grass while also dealing with weeds and other dirt.

Consult your user manual for the mower to determine how long you need to change, repair, and clean them. Some blades are hot-swappable, extending their life.

Connectivity

Some of the best robot lawn mowers for hills will come with several other features that will allow you to control their functioning.

For instance, connectivity features such as smartphone apps, Wi-Fi or cellular connections, Bluetooth connectivity, voice controls, and more can enable you to monitor and customize the settings of your mower remotely.

Weather Protection

Additionally, most of the best robot lawn mowers for hills and slopes now come equipped with weather protection that can allow them to survive in harsh weather conditions as well or to detect changes in weather so that they can make their way to their stands.

GPS tracking and security features keep your mowers safe from theft as well.

best robot lawn mowers for hills

Warranty

The warranty period for the best robot lawn mowers for hills and slopes will help you out when it comes to repairs, replacements, and refunds. Ideally, the warranty period should be over two years so that you can easily replace necessary parts at no cost in that period.

All the best robot lawn mowers for hills and slopes mentioned here have this minimum warranty period, with the WR155 having a period of three years.

Related: 5 Best Robot Mowers for Small Lawns


FAQs

In this section, I will try to answer some frequently asked questions about the best robot lawn mowers for hills and slopes.

Are the Best Robot Lawn Mowers for Hills and Slopes Safe?

One of the most common questions about these machines is whether or not they are safe for pets and small children.

While some brands do have safety features, like built-in child sensors, it’s always best to supervise your kids and any pets while using one of these machines so they stay out of the mower’s way.

Are There Separate Accessories That I Will Need?

Yes and no. Most mowers come with everything you will need to get started, including a battery, boundary wires, covers, some extra blades, screws, wires, plugs, adapters, and other tools.

However, the specific accessories robot mowers ship with vary from manufacturer to manufacturer. If you haven’t thought about where you will be storing your mower, you might want to purchase a separate “shelter” to house the vehicle in between mows.

How Often Should I Replace and Clean the Parts Of My Robotic Mower?

You will find all the maintenance information specific to your mower in your product manual.

However, a good thing to remember is that you should regularly clean blades and wheels whenever you see them full of dirt and grass. In particular, if you notice your mower moving sluggishly or stopping, this is likely a sign that it is time for cleaning.

The same applies to replacing parts, especially if you notice damage to a specific part of your mower.

What Is a Boundary Wire?

A boundary wire, as the name suggests, is a long wire that you must install along the edges of your lawn so that your robotic mower knows when to turn back or move on to another area. This can be a good way of keeping your mower inside the confines of your lawn.

This can be particularly helpful if you have a sloped or hilly lawn, as it can be easy for you to lose sight of the mower. By fixing a wire in place, you can prevent the mower from moving beyond a certain point. This can prevent the loss of the device as well.

robot lawnmower boundary wire

Final Remarks: Best Robot Lawn Mowers for Hills and Slopes

So what do you think about my review of the three best robot lawn mowers for hills and slopes?

Are you ready to step into the future and save weekly time with a robot mower? My three choices are among the top mowers you can buy for hills and slopes.

How large is your yard, and how steep are the hills? Does your yard have hard rough terrain? Please leave me a comment below and let me know. I look forward to hearing from you.

By the way, if your yard has rough terrain, check out this post I wrote on the best robot mowers for rough terrain and uneven yards.

About the Author

Tim Brennan is a technology blogger and host of the @TecTimmy YouTube channel. He shares insights about smart home tech at oneSmartcrib, home theater systems at UniversalRemoteReviews, and the future of AI in writing at Writeinteractive. A graduate of the Northeastern University School of Journalism, he has written about technology for 30 years. He lives on the ocean in scenic Nahant, Massachusetts.

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