Methodology

Every specification on this site was recorded from a manufacturer's own page — a product page, a specification table, a support article or another official manufacturer page — and normalized into a common format so models can be compared like for like. For every recorded value we keep a link to the official page used for verification, together with the date of that check, and both appear on the model page. If you want to check a single number, you can.

We do not take figures from retailers, review sites, forums or other comparison sites. Those are often wrong in ways that quietly spread.

Across the site, we use four evidence states: Verified, Marketing claim, Sources disagree, and Not verified.

The selector is a filter, not a recommendation engine. It does not score mowers, rank them, or pick a winner. Each model lands in one of three groups:

• Compatible — every requirement that can rule the mower out was checked against a Verified figure or, where official manufacturer information conflicts, the more conservative published figure, and passed.
• Conditional — nothing rules it out, but at least one requirement could not be resolved conclusively: a required value is not Verified, the manufacturer states a condition the selector does not ask about, or the result depends on something we cannot check for you, such as whether the maker's correction service reaches your address. The specific gap is named.
• Not compatible — a verified specification genuinely fails one of your requirements, and we say which.

Within each group, results are listed alphabetically. That ordering is deliberately meaningless — it is not a ranking, and nothing is "first choice".

Six of the recorded fields can decide a verdict: lawn size, slope, slope at the boundary, boundary wire, positioning and multiple zones. The others are recorded and shown so you can compare models on them, but no verdict turns on them.

We only rule a model out using a Verified figure or, where official manufacturer information conflicts, the more conservative published figure. Missing or marketing-only data can never eliminate a mower; it moves it to Conditional instead. That is why Conditional is common — it reflects what the industry publishes, and we would rather show you an honest gap than a confident guess.

If nothing matches, we show which models were a single requirement away and name that requirement, so you can see what is actually blocking you.

Model pages show how many of the 20 specification fields we have recorded a value for. That number describes our data, not the mower. A well-documented mower is easy for us to write about. It is not necessarily a better machine, and we never order, favor or recommend anything based on that figure.

Manufacturer documentation is uneven. Some brands publish detailed boundary-slope, navigation, and installation specifications, while others publish much less. Guides that depend on a particular field may therefore contain more examples from brands that document that field well. That reflects data availability, not product quality or editorial preference.

Some links on this site may be affiliate links. If you buy through one of them, we may earn a commission at no additional cost to you. Affiliate status does not affect the data, selector logic, or editorial treatment of a product.

Affiliate relationships, commission rates, and commercial arrangements do not change the data we record, the selector rules, the ordering of results, or our editorial conclusions.

We do not sell, import, install, warrant or service anything shown here.

Specifications can change, and manufacturer sources can also disagree with one another. If a current official source conflicts with what we show, we re-check the value, preserve meaningful conflicts where necessary, and update the verification date. We do not silently overwrite uncertainty.

Re-checks are manual; we do not currently run continuous or scheduled monitoring of manufacturer sources.