Mammotion LUBA 2 AWD 5000HX Robot Lawn Mower with 4G, Reception 1.25 Acres, Max. 1.48 Acres, All-Wheel-Drive for 80% Slope, UltraSense AI Vision & RTK Automatic Edge Mapping, 2.2"-4.0" Cutting Height

Why it's worth it

The LUBA 2 AWD 5000HX is an all-wheel-drive mower rated for 80% slopes and more than an acre of coverage. If your property has hills, ruts and thick grass that have stopped every other machine, this is the one built for that job.

Most robot mowers quit somewhere around a 35% grade. This one is rated for 80%, roughly 38 degrees, with a 165-watt motor driving all four wheels. Tom's Guide watched it climb a 65% incline without the wheels slipping, the steepest result the outlet had recorded from a robot mower. On a yard with a real hill in it, that spec decides whether you own a mower or a lawn ornament.

It's built for the messy yard, not the tidy one. All-wheel drive keeps it moving through ruts, soft ground and grass that got away from you. Owners with steep, uneven acreage describe it as the first mower that stopped getting stuck every few days. The 15.8-inch dual-blade deck also means fewer passes, and it covers roughly 13,000 square feet before heading back to the dock.

From our review of 4 robot lawn mowers, by Genevieve Dubois, Home & Living Expert

What we like

• +Most robot mowers quit somewhere around a 35% grade
• +It's built for the messy yard, not the tidy one
• +You get room to grow, too
• +The vision system is what keeps it working under trees

What to know

• –It's big and heavy at 41 pounds, and it takes up real space in a garage or shed
• –Anti-theft is a mixed story
• –Blades are a consumable, and a dual-disk deck means more of them to swap