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Lawn Mowers under $400

All Lawn Mowers

3 lawn mowers under $400 from PowerSmart, Senix, Einhell and more. Prices run $308 to $399.

Gardena

Robotic

+Robotic mower that cuts the lawn automatically without manual operation
+Cuts grass from 1 to 4 inches in height
+Engineered in Germany for challenging lawns
−Needs a boundary wire installed around the lawn before use
$308.33-6%Was: $327.88
as of 11/03/2026 23:08 PST - Details
Yardcare

Robotic

+Robotic design mows on its own without manual pushing
+Visual navigation helps it find its way around the yard
+Smart obstacle avoidance reduces bumps into objects
−Requires charging and a defined mowing area to operate
$349.99
as of 11/04/2026 08:41 PST - Details

Compare specs

lawn mowerTypePower sourceCutting widthSpec scorePrice
Roboticn/a$399.99
as of 11/03/2026 23:51 PST - Details
Roboticn/a$308.33
as of 11/03/2026 23:08 PST - Details
Roboticn/a$349.99
as of 11/04/2026 08:41 PST - Details

Before you buy

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.