Our method
How we compare robot mowers
MowerRanker is a comparison site, not a review blog. The product is a catalog of 53 robot lawn mowers from 21 brands recorded on one identical spec sheet, so a $600 boundary-wire mower and a $5,000 AWD RTK flagship can be lined up and compared like for like. This page is the full account of where that data comes from and how the lists are built.
Where the specs come from
Specifications are taken from manufacturer spec sheets and manuals, normalized into consistent units — square feet for rated area (with acres alongside), percent for slope, inches for cutting width and height, minutes for runtime — so a Husqvarna and a Mammotion sit in the same table without footnotes. Where a spec is a marketing best-case (rated lawn size is the classic one), we record the stated number and explain how to read it rather than pretend it’s a lab result.
Why some mowers show no star rating
A star rating appears only when we can cite a public owner review aggregate from a named retailer — 17 of the 53 mowers currently qualify. If we can’t verify a number, the stars are hidden rather than invented, and we never republish Amazon’s ratings or review counts. An uncited score would be a claim about real customers that nobody can check.
Where the pros, cons and owner notes come from
Pros and cons are written from owner reports — retailer reviews, brand community forums, lawn-care forums, and published long-term reviews — not from the brochure. Robot mowers are a fast-moving category and some models are too new to have a body of owner experience; 20 of the 53 entries are marked as written from the spec sheet and published reviews only, and say so on the page. We never write “owners report” about a machine whose owners we haven’t read.
What every mower’s sheet records
- Pricean approximate snapshot — the axis every decision starts on
- Navigationboundary wire, RTK GPS, RTK + vision, vision only, LiDAR or UWB — decides where it works
- Max lawn sizethe maker's rated area, which assumes a simple lawn and daily mowing
- Max slopepercent grade, with the degree equivalent alongside
- Cutting widthhow much lawn disappears per pass
- Cut heightmin and max — the range that decides fescue and warm-season fit
- DriveRWD or AWD; traction on wet slopes
- Runtime & chargeminutes mowing per charge and minutes back on the dock
- Noisedecibels at the maker's stated distance
- Obstacle detectionbumper, ultrasonic, camera or LiDAR
- Edge cutting, rain sensor, multi-zonethe yes/no features people ask about after shortlisting
- Cellular & anti-theftbuilt-in 4G, its subscription terms, PIN, alarm, GPS tracking
- Warrantyhow long the maker stands behind it
How lists are ordered
The catalog defaults to sorting by verified owner rating; mowers without a citable rating sort after those with one, never above. You can re-sort by price, rated lawn size, slope, or review count yourself. Buying guides are written explainers — their recommendations link into the same catalog entries with the same specs and the same cons listed, so you can check our work against the data.
How the site makes money
Some “check price” links are Amazon Associates affiliate links: if you buy through one, Amazon pays us a small commission at no extra cost to you. Commissions never affect which mowers appear, how they rank, or what the cons say — the same spec sheet and the same sort order apply whether or not a mower earns us anything.
What we never do
No sponsored placements. No pay-to-rank. No reshuffling lists for affiliate commissions. No “editor’s choice” badges sold to the highest bidder. If that ever changes, this page will say so first.
Update cadence
The catalog is reviewed for new mowers, discontinued models, firmware changes that alter capability, and price movement on an ongoing basis. Catalog last updated September 2026.