Segway Navimow X430
1 acre84% slope
$2,499
84% (40°), the joint-highest rating here, with a full acre of coverage.
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Best robot lawn mower for hills and slopes
Robots rated for 45% (24°) or steeper, ranked by price. The best climbers handle 80–84%, about 40°.
Dreame A3 AWD 1000
0.25 acre80% slope
$1,399.99
80% (38.7°) for $1,399.99 with LiDAR navigation, for lawns up to a quarter acre.
Mammotion LUBA mini 2 AWD 1500
0.37 acre80% slope
$1,799
80% with LiDAR and cameras, no satellite needed, for up to 0.37 acre.
Every mower rated for 45% or more
| Model | Max area | Max slope | Navigation | Cutting width | Price seen |
|---|---|---|---|---|---|
| Segway Navimow i210 AWD | 0.25 acre | 45% (24°) | RTK + Vision | Not listed | $1,299 |
| Dreame A3 AWD 1000 | 0.25 acre | 80% (38.7°) | LiDAR + Vision | 7.9 in | $1,399.99 |
| Segway Navimow i215 LiDAR | 0.37 acre | 45% (24°) | LiDAR + Vision | Not listed | $1,599 |
| Dreame A3 AWD 2000 | 0.5 acre | 80% (38.7°) | LiDAR + Vision | 7.9 in | $1,699.99 |
| Mammotion LUBA mini 2 AWD 1500 | 0.37 acre | 80% (38.6°) | LiDAR + Vision | Not listed | $1,799 |
| Mammotion LUBA 3 AWD 1500 | 0.37 acre | 80% (38.6°) | LiDAR + Vision | 15.7 in (400 mm) | $2,399 |
| Segway Navimow X430 | 1 acre | 84% (40°) | RTK + Vision | 16.9 in (430 mm) | $2,499 |
| ECOVACS GOAT A3000 LiDAR PRO | 0.75 acre | 50% (27°) | LiDAR | 13 in (33 cm) | $2,499.99 |
| Dreame A3 AWD Pro | 1.24 acres | 80% (38.7°) | LiDAR + Vision | 15.8 in (40 cm) | $2,599.99 |
| Husqvarna Automower 410 iQ | 0.5 acre | 45% (24.2°) | RTK | 9.4 in | $2,599.99 |
| Mammotion LUBA 3 AWD 3000H | 0.75 acre | 80% (38.6°) | LiDAR + RTK + Vision | 15.7 in (400 mm) | $2,799 |
| Segway Navimow X450 | 1.5 acres | 84% (40°) | RTK + Vision | 16.9 in (430 mm) | $2,999 |
| WORX Landroid Vision Cloud 4WD (1 acre) | 1 acre | 84% (40°) | RTK + Vision | 8.7 in | $2,999.99 |
| Husqvarna Automower 420 iQ | 1 acre | 45% (24.2°) | RTK | 9.4 in | $3,299.99 |
| Husqvarna Automower 440 iQ | 2 acres | 45% (24.2°) | RTK | 9.4 in | $4,299.99 |
| Segway Navimow X390 | 2.5 acres | 51% (27°) | RTK + Vision | Not listed | $4,499 |
| Husqvarna Automower 435 iQ AWD | 0.9 acre | 70% (35°) | RTK | 8.7 in | $4,999.99 |
Percent vs degrees
Slope ratings mix two units. A 100% slope rises one foot for every foot across, which is 45°. So 80% is about 38.7°, and 30% is about 17°. Use the steepest part of the lawn the mower must cross, not the average.
The slope guide shows how to measure it with a phone, and the calculator filters by it.
What else matters on hills
Wet grass reduces grip, and edges of slopes are harder than the middle. Husqvarna, for example, rates its Husqvarna Automower 440 iQ for 45% inside the lawn but 15% at the boundary (Husqvarna specs). If your steepest bank sits at the edge, leave extra margin.