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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. How we collect data.

  1. Number 1: Lymow One

    Up to 100% slope

    Satellite and camera guidance · No boundary wire · Needs a base station · List price $2,999

    All details

  2. Number 2: Lymow One Plus 10A

    Up to 100% slope

    Satellite and camera guidance · No boundary wire · Needs a base station · List price $3,199

    All details

  3. Number 3: Sunseeker Elite X9 Plus

    Up to 90% slope

    Satellite and camera guidance · No boundary wire · No base station · List price $6,999

    All details

  4. Number 4: Sunseeker Elite X9

    Up to 90% slope

    Satellite and camera guidance · No boundary wire · No base station · List price $5,899

    All details

  5. Number 5: GOKO M6

    Up to 90% slope

    Satellite and camera guidance · No boundary wire · Needs a base station · List price $2,999

    All details

  6. Number 6: TerraMow X AWD

    Up to 90% slope

    Satellite and camera guidance · No boundary wire · No base station · List price $3,699

    All details

  7. Number 7: Airseekers Tron Ultra

    Up to 85% slope

    Laser and camera guidance · No boundary wire · List price $3,000

    All details

  8. Number 8: Kress KR286

    Up to 84% slope

    Satellite and camera guidance · No boundary wire · No base station · List price $4,299.99

    All details

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