---
title: "Best Robot Lawn Mowers for Steep Slopes"
description: "Robot lawn mowers ranked by the steepest slope each maker says they can mow, with lawn size, wire and list price. Claimed figures, not tests."
canonical: "https://homerobotcompared.com/best/steep-slopes"
updated: "2026-10-09"
data_snapshot: "2026-10-07"
---

# Best Robot Lawn Mowers for Steep Slopes

A hill is where a robot mower earns its keep, or gives up. These are the models whose makers claim the steepest slopes.

How this list is ranked: Ranked by the steepest slope the maker claims, highest first. Slope is the maker's figure in percent (100% is 45 degrees). Ties go to the larger lawn size. We list at most two robots per brand and only models not ruled out of the US market. Every figure is the maker's claim, not a test result.

1. [Lymow One](https://homerobotcompared.com/md/robot-mowers/lymow-one.md): Up to 100% slope; Satellite and camera guidance; no boundary wire; list price $2,999.
2. [Lymow One Plus 10A](https://homerobotcompared.com/md/robot-mowers/lymow-one-plus-10a.md): Up to 100% slope; Satellite and camera guidance; no boundary wire; list price $3,199.
3. [Sunseeker Elite X9 Plus](https://homerobotcompared.com/md/robot-mowers/sunseeker-elite-x9-plus.md): Up to 90% slope; Satellite and camera guidance; no boundary wire; list price $6,999.
4. [Sunseeker Elite X9](https://homerobotcompared.com/md/robot-mowers/sunseeker-elite-x9.md): Up to 90% slope; Satellite and camera guidance; no boundary wire; list price $5,899.
5. [GOKO M6](https://homerobotcompared.com/md/robot-mowers/goko-m6.md): Up to 90% slope; Satellite and camera guidance; no boundary wire; list price $2,999.
6. [TerraMow X AWD](https://homerobotcompared.com/md/robot-mowers/terramow-x-awd.md): Up to 90% slope; Satellite and camera guidance; no boundary wire; list price $3,699.
7. [Airseekers Tron Ultra](https://homerobotcompared.com/md/robot-mowers/airseekers-tron-ultra.md): Up to 85% slope; Laser and camera guidance; no boundary wire; list price $3,000.
8. [Kress KR286](https://homerobotcompared.com/md/robot-mowers/kress-kr286.md): Up to 84% slope; Satellite and camera guidance; no boundary wire; list price $4,299.99.

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Web page: https://homerobotcompared.com/best/steep-slopes