Robot Mower Buying Guide
Robot lawn mowers automate one of the most repetitive yard chores, but they’re a bigger investment than a push mower and not every model suits every lawn. Here’s what to weigh before buying one.
Navigation: Boundary Wire vs GPS
Traditional robot mowers rely on a thin perimeter wire buried or pinned around the lawn edge, which the mower detects to stay within bounds — this requires an initial setup effort but tends to be reliable once installed. Newer models use GPS or RTK positioning combined with onboard sensors to navigate without a wire, which simplifies setup and makes it easier to adjust zones later, though performance can depend on satellite signal quality and obstacles like tall trees or buildings that block signal.
Cutting Width and Lawn Size
Cutting width affects how quickly a mower can cover an area — a narrower cutting path means more passes and longer total mowing time for the same size lawn. Manufacturers typically publish a maximum recommended lawn area for each model; buying a mower rated well above your actual lawn size gives it more idle time to handle complex layouts, while an undersized mower may struggle to keep up during peak growing season.
Slope Handling
Every robot mower has a maximum slope rating, usually expressed as a percentage grade or degree of incline. Exceeding it risks the mower losing traction, wheel-spinning and damaging the lawn, or in worse cases tipping. If your yard has noticeable hills or slopes, check this figure carefully and consider measuring your steepest section rather than estimating.
App Control and Scheduling
- Scheduling flexibility: Look for the ability to set multiple mowing windows and avoid times when family or pets are using the yard.
- Multi-zone support: Useful if your property has separate lawn areas connected by a narrow path or driveway.
- Notifications and theft protection: Many app-connected mowers offer alerts for lifting, tilting, or leaving a defined area, along with PIN codes or GPS tracking as theft deterrents.
Maintenance
Most robot mowers use small razor-style blades that need periodic replacement, and the mower itself will need occasional cleaning of the cutting deck and wheels, especially after wet conditions. Battery lifespan and the availability of replacement batteries are worth researching, since batteries degrade over years of daily charging cycles.
Top Picks: Leading Robot Mower Brands Compared
If you’re ready to shop, here’s how some of the best-known robot mower brands differ:
| Brand | Known For |
|---|---|
| Husqvarna Automower | The pioneer of robotic mowing, with a wide model range from small gardens up to large estates and a long reputation for reliability. |
| EGO Power+ | A newer entrant offering wire-free GPS navigation models that share EGO’s broader battery ecosystem. |
| Worx Landroid | Popular mid-range wire-guided and GPS models known for affordability and a well-regarded companion app. |
| Greenworks Optimow | Battery-powered robot mowers that fit into Greenworks’ broader outdoor power tool lineup. |
Bottom Line
Measure your lawn’s actual size and slope before shopping, decide whether you’re comfortable installing a boundary wire or prefer a wire-free GPS system, and prioritize models rated comfortably above your lawn’s size and terrain challenges rather than the exact minimum.
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