Yarbo vs Mowrator: Which Robot Mower for Your Yard?

Last updated: September 2026

Choose Yarbo if you want a robot that mows on its own, on a schedule, and clears snow and leaves too. Choose Mowrator if you want to drive a powerful mower by remote on slopes steeper than a robot can handle. Yarbo is rated for 70% (35°) slopes; the Mowrator S1 goes up to 119% (50°) on Grip Tread tires.

What is the difference between Yarbo and Mowrator?

Both make machines for big, difficult yards, but they solve the problem in opposite ways. Yarbo is an autonomous robot. You map your lawn once in the Yarbo app, and the Yarbo Core mows on the schedule you set, finds its own way with RTK positioning and stereo vision cameras, and drives back to its dock to recharge wirelessly. No boundary wire is needed.

The Mowrator S1 is a remote-control mower. There is no mapping, no app and no fuel: you switch it on, pick up the handheld remote and steer it while you stand somewhere safe and level. It does not mow by itself, but it goes where no autonomous robot is rated to go, with a 21 inch deck and 1,985 W of peak cutting power.

The table below puts the published figures side by side, all from Yarbo and Mowrator.

Do you want to mow, or do you want it done?

This is the question that decides most purchases. With a Yarbo, the mowing happens while you are at work, away for the weekend, or asleep. Yarbo rates the Lawn Mower Pro module at about 0.25 acre per charge on the Y40 and 0.3 acre on the Y40P, so it works in steady sessions: mow, dock, recharge, carry on. Yarbo rates the Y40 for lawns up to 6 acres and the Y40P for lawns up to 7 acres, mowed twice a week.

With a Mowrator, someone still spends the time, but the work is easy and safe. Mowrator gives a top speed of 3.4 mph and about half an acre an hour, and a spare battery lets you swap and keep going. For owners who enjoy mowing, or who have one steep area that needs attention once a week, that control is the point.

• Hands-off, on a schedule: Yarbo
• You drive, from a safe spot: Mowrator
• Both: no boundary wire to bury

Which handles steeper slopes?

Slope ratings are given as percent grade, the rise divided by the run, times 100. A 100% grade is 45 degrees. Yarbo rates the Core with the Lawn Mower Pro module for slopes up to 70% (35°), which covers most residential lawns with banks and hills. Its rubber tracks spread the weight and grip on uneven ground.

Mowrator offers four S1 editions, each with its own rating from Mowrator:

If your steepest ground is under 70%, both brands are rated for it and the choice comes down to autonomy. If you have banks, ditches or embankments steeper than that, the Mowrator 4WD editions are the machines rated for them. Our guide to mowing steep slopes safely explains how to measure your own slope before you choose.

How much lawn can each one keep up with?

For an autonomous robot, the useful number is how much it can keep cut over a week. Yarbo rates the Y40 for lawns up to 6 acres and the Y40P for lawns up to 7 acres, mowed twice a week, at about 1.7 or 2 acres a day. The Y40P uses gearbox-free dual hub motors and a top drive speed of 1.2 m/s against the Y40's 0.6 m/s, which is where its extra coverage comes from.

For a remote-control mower, the limits are your time and the battery. Mowrator rates the S1 at up to 1.5 hours and 0.75 acre on the 12Ah battery, or 2.25 hours and 1.125 acres on the 18Ah battery, with the 600 W charger refilling them in 70 or 90 minutes. A second battery doubles the run before a break. Large properties often use both approaches: a Yarbo on the open lawn every few days, and a Mowrator for the one bank the robot is not rated for.

What about snow and leaves?

This is where the two brands differ most. Yarbo is modular: the same Core carries the Lawn Mower Pro module in summer, a two-stage snow blower module in winter and a leaf blower module in autumn, plus an optional trimmer. Yarbo rates the leaf blower at 607 CFM and 174 mph, and the snow blower module at a 24 inch clearing width for snow up to 12 inches deep. Our guide to the robotic snow blower for large driveways covers the winter side in detail.

The Mowrator S1 is a mower first. With the mulching blade it vacuums leaves at 931 CFM into a 70 litre bag, and it can mow, mulch, side discharge or bag. For winter, Mowrator makes a Snow Plow Kit that fits the S1 4WD editions only, and a Trailer Hitch Kit for towing.

• One machine for every season: Yarbo, with modules
• Mowing and leaves, driven by you: Mowrator
• Light snow pushing on a 4WD: Mowrator Snow Plow Kit

How hard is setup?

A Yarbo needs a one-time setup: placing the docking station and the Data Center, a small base station that sends RTK correction data, then mapping the areas to mow in the app. RTK needs a reasonably open view of the sky, and dense tree cover or tall buildings can weaken it; our guide to RTK and GPS signal problems explains what affects it. Once mapped, the robot runs on its own.

A Mowrator needs almost nothing. Charge the battery, fit it, switch on and drive. There is no map to build and no signal to worry about, which also makes it easy to take to a second property or a field on a trailer.

How do they cope with rain, noise and wear?

Yarbo gives the Lawn Mower Pro module an IPX6 rating, lists rain detection among its features, and quotes a noise level of 60 dB or less, which Yarbo compares to normal conversation; that makes early or late schedules practical. Obstacles are handled with binocular cameras, ultrasonic sensors and a bumper.

Mowrator builds the S1 on an aluminum alloy body with a deep-drawn stamped steel deck. Its 56V LiFePO4 batteries are rated for more than 1,500 charge cycles and have a battery management system that guards against over-temperature, overvoltage, undervoltage, overcurrent and short circuits, and the 600 W charger is rated IP65. Mowrator treats blades, tires and other consumable parts separately from the main warranty, so a spare set of blades is worth keeping on hand.

Choose Yarbo if

• You want the lawn mowed without spending your own time on it
• Your slopes are within 70% (35°)
• You also want snow cleared from the driveway and leaves blown in autumn with the same machine
• The yard has a reasonably open view of the sky for RTK

See the Yarbo range, or start with the Yarbo Y40 Lawn Mower Pro or the Y40P Lawn Mower Pro.

Choose Mowrator if

• You have banks, ditches or embankments steeper than 70%
• You are happy to drive the mower, from a safe spot
• You want grass up to 51 inches tall cut back, or leaves vacuumed and bagged
• You want no app, no mapping and no base station

Compare every edition in Mowrator S1 mowers.

Where does each one fall short?

Yarbo is not rated for ground steeper than 70% (35°), it needs RTK signal and a mapping session before it starts, and it mows in sessions of about a quarter acre per charge, so a very large lawn is kept cut over the week rather than finished in an afternoon. The Mowrator S1 does nothing on its own: someone has to drive every pass, and on a large, flat lawn that is time an autonomous robot would give back. The S1 2WD is rated for 45% (24°), so for real hills you need one of the 4WD editions.

Still not sure which fits your yard?

Tell us your lawn size, your steepest slope and whether you want snow and leaves handled too, and a Yard Automation Pro will recommend the setup that fits, or tell you honestly when neither does. Book a free consultation by email, or call +1 423-927-3776, 9am to 5pm EST. For an instant answer, try our Find Your Robot quiz and cost calculator.