Best Robot Lawn Mowers of 2018

Danny Chadwick ·
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We’ve been evaluating the best robot lawn mowers for three years. In that time, we’ve considered dozens of models, comparing their features, benefits and drawbacks. We believe the Husqvarna Automower is the best one because it is easy to operate and has a unique blade system and safety and anti-theft systems. It can cover a lawn up to 1/3 of an acre, which is more than adequate for most residential homes. On a full charge, the battery lasts 45 minutes, then the mower returns to its base and recharges in the same amount of time. 

Best Overall

Husqvarana Automower

You won’t find another robot lawn mower like the Husqvarna Automower. It’s easy to set up, has a powerful battery and keeps your lawn neatly trimmed with minimal interaction from you.
Best Value

Denna L600

Robot lawn mowers are expensive – most cost more than $2,000. You can pick up this Denna model for about half that price, and it includes most of the features we look for.
Best for Large Yards

Robomow RS630

For yards larger than 1/3 of an acre, consider this robot lawn mower. It can mow lawns up to 2/3 of an acre – twice as much space as other models.
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Best Overall

Husqvarana Automower

We chose this model as our best pick because it delivers on the claims manufacturers make about what robot lawn mowers can do. It’s also easy to set up – all you have to do is program its mow schedule and put it on its base, and it takes care of the rest.
The mower’s maximum slope (or include) is 20 degrees, which if fine for most yards. You can set the cutting height anywhere between .8 and 2.4 inches. This gives you a great deal of control and allows you to maintain your grass at the exact height you want it. The blade system on this robot lawn mower is unique among the models we reviewed. Instead of independent blades, it has a circular disc that contains three carbon steel razor blades. This makes for a finer cut than is possible with other robot lawn mowers. This robot lawn mower doesn’t have the longest battery life we saw, but it doesn’t need to. Starting with a fully charged battery, it can zip around your yard for 45 minutes. It then returns to its base to charge for 45 minutes before it continues its work. The lawn mower’s safety features include lift, tilt and obstacle sensors that shut down or redirect the machine so it doesn’t damage objects in your yard. It also comes with a PIN code lock that keeps children from activating it.
  • It returns to its base when the battery needs to recharge.
  • You program everything using an onboard 19-button touchpad.
  • Its unique blade design creates a fine, handsome cut.
  • It doesn’t come with a remote or mobile app.
  • There isn’t a rain sensor.
  • The blades require more maintenance than those on other robot mowers.
Best Value

Denna L600

Other robot lawn mowers we reviewed cost in excess of $2,000, but this model is priced at just under $1,000. It’s a great deal, and it doesn’t skimp on the features that make these machines so useful.
It has a mowing width of 10 inches and can mow about 480 square feet every day. The blades spin at 3,200 RPM, so it delivers a handsome, consistent trim every time. It’s made of strong ABS plastic, which means it can withstand the punishment of daily use. Additionally, it’s the quietest robot lawn mower we reviewed, producing just 65 decibels of sound. This model has the longest battery life of any robot lawn mower we reviewed. When it starts with a full charge, you can expect the battery to last between one and two hours, which is head and shoulders above our top pick. The tradeoff is it takes up to six hours to recharge. And it doesn’t have a charging base, so it requires a standard 110- or 240- volt charger you have to attach manually. The included remote control has an effective range of 50 feet, so you can mow your lawn while sitting on your porch.
  • It costs half as much as other robot lawn mowers.
  • The battery lasts between one and two hours.
  • Its ABS plastic body stands up against the punishment of daily use.
  • The mower doesn’t come with a charging base.
  • Recharging the battery can take up to six hours.
  • It’s mowing width is a relatively narrow 10 inches.
Best for Large Yards

Robomow RS630

Most robot lawn mowers can only cover a lawn spanning 1/2 an acre. However, this model doubles that range to 2/3 of an acre. It features advanced multizone technology that allows it to assign up to four zones to mow individually.
You can set the cutting height anywhere between 0.78 inches and 3.14 inches – you set it during the setup phase and can adjust it whenever needed. It’s 22-inch cutting path is the widest among the robot lawn mowers we reviewed, and it can cut slopes with an include up to 20-degrees, which is on par with our top pick. The motor on this model is brushless, which helps it use power more effectively than other mowers and cuts down on its required regular maintenance. The battery lasts anywhere from 60 to 90 minutes on a full charge and takes about two hours to reach full power. While these aren’t the best numbers we saw, the mower automatically returns to its base to recharge before the battery dies so you don’t have to plug it in manually. It also returns to its base in the case of rain or high humidity, which is something even our top pick doesn’t do.
  • It can mow lawns up to 2/3 of an acre.
  • Its 22-inch cutting path is the widest we saw.
  • You can manually control it via a remote control or mobile app.
  • It’s very expensive, costing about $2,500.
  • At 44 pounds, it’s the heaviest robot lawn mower we reviewed.
  • You need to buy extra perimeter wire to create multiple mow zones.

Why Trust Us? 

As a matter of course, Top Ten Reviews thoroughly examines every product we feature on our site. As we evaluated robot lawn mowers, we looked at manufacturer spec sheets and comments from real-life users. We combed through hundreds of user reviews and watched several videos posted by robot mower owners. Additionally, we consulted each model’s owner’s manual to get an idea of what each product has to offer. We also considered price to determine which model gives you the best value for your dollar.

How We Picked the Best 

We’ve been reviewing the best robot lawn mowers since the technology emerged in 2015. Since then, we’ve examined dozens of models, comparing their features against each other to determine which ones are the best for real-life circumstances. We considered battery life, charge time, maximum coverage area, automated scheduling, noise level, blade design, slope capacity, construction materials and much more.

Important Features to Consider When Choosing a Robot Lawn Mower 

There are many features to consider as you choose a robotic lawn mower, including how many zones it can mow, how much area it can cover and whether you can program it with a mowing schedule. If your lawn is quite large and has hills or large slopes, things like slope capability and running time should also be on your list of considerations.

Multizone Capability

Not all automatic lawn mowers travel to distinct, separate areas to cut grass – for that you need one with multizone capability. This feature is necessary if your home or business has a small front lawn and larger back lawn that are not directly connected. In this scenario, each lawn is considered a zone. Most multizone robot mowers cover two to four zones.

Programmable mowers can be scheduled to run on particular days at specific times. When buying a programmable robot mower, consider how you program it and what you want to program it to do. You program some units from the mower base, and others can be set remotely by connecting to them via Bluetooth and Wi-Fi.

The type of power a robotic lawn mower uses helps you determine where you should store it and gives you an idea of how much it costs to use. These machines are powered by either solar energy or a battery you plug into a power source to recharge. How long it holds a charge determines how much lawn in can mow in a single go – if it has a short battery life, it may have to recharge multiple times before finishing the job.