Segway Navimow X4 vs Segway Navimow X330

Quick take: The Segway Navimow X330 costs $200 less; the Segway Navimow X4 is all-wheel drive, which is what keeps a mower climbing a wet slope; the Segway Navimow X4 is rated for a larger lawn (1.5 acres); the Segway Navimow X4 is rated for steeper ground (84%).

SpecSegway Navimow X4Segway Navimow X330
Price~$2,499~$2,299
Rating——
NavigationRTK + VisionRTK + Vision
Max Lawn Size1.5 acres (65,340 sq ft)1 acre (43,560 sq ft)
Max Slope84% (40°)50% (27°)
Cutting Width17"9.3"
Cut Height0.75"–4"2"–4"
DriveAWDRWD
Runtime110 min160 min
Charge Time90 min65 min
Noise68 dB60 dB
Weight63.7 lb43.7 lb
Obstacle Detection360-degree AI camera array recognizes 200+ object types and reroutes around pets, toys and furniture; front bumper and lift sensors; no dedicated drop-off sensor.300-degree RGB camera array plus ToF sensor with night vision; recognizes 200+ object types incl. 24 animal species, rerouting around pets and toys.
Edge CuttingYesNo
Rain SensorYesNo
CellularYesYes
Anti-TheftPIN lock, lift alarm, out-of-boundary alerts and real-time GPS tracking over built-in 4GPIN lock, lift alerts, GPS tracking and geofence alerts over built-in 4G
Warranty3-year limited3-year limited

Pros & cons

Segway Navimow X4

  • ✓84% slope rating with four hub motors and suspension; owners say it crosses soggy, uneven ground the X3 cannot
  • ✓17 in cut with two 180 W motors finishes an acre in a day
  • ✓0.75 to 4 in height range covers Bermuda and zoysia as well as fescue
  • ✓Antenna-free Network RTK setup; auto mapping took a reviewer ten minutes
  • ✓Independent front steering turns without pivot scuffing
  • ✓EdgeSense mows within about 2 in of walls and fences
  • ✗One reviewer's unit climbed a raised patio edge and scuffed it; no drop-off sensing
  • ✗First pass looks choppy, and wet turf gets chewed by the aggressive tires
  • ✗24 in body width and 64 lb make narrow gates and carrying between zones awkward
  • ✗68 dB is the loudest Navimow

Segway Navimow X330

  • ✓RTK plus visual SLAM keeps a fix under trees where RTK-only mowers stop
  • ✓Fast 3.3 ft/s pace and quick 65 minute recharge finish an acre in a day
  • ✓Two years of 4G with GPS tracking and geofence alerts included
  • ✓2-4 inch cut range suits cool-season grasses, unlike the old H series
  • ✓Sold direct at $2,299, down $500 from launch
  • ✗Two-wheel drive; struggles traversing side-hills despite the 50% rating
  • ✗No onboard rain sensor, only forecast-based pausing
  • ✗Edges need the optional Trimmer accessory or manual touch-up
  • ✗43.7 lb is heavy to carry between disconnected zones