Methodology

Short version: we record and normalize specifications from manufacturer sources, show you where each number came from, and are honest about what nobody publishes. We never guess, and we do not rank mowers against each other.

Where the numbers come from

Every specification on this site was recorded from a manufacturer's own page — a product page, a specification table, a support article or a manual — 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.

Three things we do that most sites do not

We show you what is missing

If an official source does not provide a value, we do not infer one — the field remains Not verified. We never estimate it, work it out from a similar model, or quietly borrow a competitor's number.

A blank does not mean the mower is bad at that thing. It means the manufacturer has not said. Plenty of capable machines have thin spec sheets, and plenty of ordinary ones are documented beautifully. Read a blank as "go and ask the seller", not as a mark against the product.

We separate what is measured from what is marketed

Manufacturers publish two very different kinds of number. One appears in a specification table. The other appears in the sales copy, sometimes with a footnote like "data from our lab". These are not the same standard of evidence, so we label them differently.

A marketing-only figure is shown, clearly marked, and never used to rule a mower in or out. If a brand advertises a slope figure it does not put in its own spec sheet, that is worth knowing — and worth treating carefully.

We show disagreements instead of settling them

Manufacturers contradict themselves more often than you would expect. The same mower can be listed at one slope rating on the product page and a different one in the support documentation. We have found gaps as large as 45% against 80%, and coverage areas that differ by a factor of two.

When that happens we show both figures with both links. For deciding whether a mower fits your yard, we use the more cautious of the two — but we tell you the other exists, because a manufacturer disagreeing with itself is a reason to ask questions before you buy.

How the selector decides

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 — everything you told us was checked against a verified specification and passed.
• Conditional — nothing rules it out, but at least one of your requirements could not be checked because the manufacturer does not publish that figure. 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".

A model is only ruled out on a figure we have verified. 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.

Completeness is not quality

Model pages show how many of the 20 specification fields we have verified for that model. 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.

Where our coverage is uneven

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.

What we will not claim

We have not tested these mowers. Unless a page states plainly that testing happened and describes how, everything here is analysis of published specifications. You will not find invented ownership stories, made-up long-term impressions, fabricated reviews or testimonials on this site.

We also avoid "best mower" verdicts. The best mower for a flat quarter acre and the best mower for a steep, tree-covered acre are not the same machine, and a single ranking hides that.

Money, and where it stops

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.

Corrections

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.