Greenworks AiMowbot C20 vs Ecovacs GOAT O1000 RTK

Quick take: The Greenworks AiMowbot C20 costs $1 less; the Greenworks AiMowbot C20 is rated for a larger lawn (0.5 acres); the Greenworks AiMowbot C20 cuts taller (up to 3.5"), which matters for fescue and warm-season grasses; the Greenworks AiMowbot C20 has built-in cellular for GPS tracking and away-from-home control.

SpecGreenworks AiMowbot C20Ecovacs GOAT O1000 RTK
Price~$998~$999
Rating3.1★ (45)—
NavigationRTK + VisionRTK + Vision
Max Lawn Size0.5 acres (21,780 sq ft)8,600 sq ft (8,600 sq ft)
Max Slope45% (24°)45% (24°)
Cutting Width8"8.66"
Cut Height0.75"–3.5"1.2"–3.2"
DriveFWDRWD
Runtime—65 min
Charge Time—100 min
Noise54 dB57 dB
Weight26.2 lb24.3 lb
Obstacle DetectionSmart cameras plus night-vision sensors that Greenworks says recognize 200-plus obstacle types, with a bumper and LED headlights for night mowing.AIVI 3D: AI camera + 3D ToF, 200+ object types; reliably rounds trees, toys, hoses and pets, less sure on very low-lying items.
Edge CuttingNoYes
Rain SensorNoYes
CellularYesNo
Anti-TheftAccount-locked operation plus an alarm when it leaves the mapped area; GPS tracking when the 4G plan is activePIN lock + lift alarm; geofence Distance Alarm needs the optional 4G module
Warranty3-year limited1-year limited (Ecovacs US standard policy)

Pros & cons

Greenworks AiMowbot C20

  • ✓Cheapest RTK plus camera mower from a US big-box brand
  • ✓45% slope rating beats most 2WD RTK rivals
  • ✓Very quiet at 54 dB and hose-washable (IPX6)
  • ✓Electric cut-height adjustment from 0.75 to 3.5 in covers warm- and cool-season grass
  • ✓26 lb body is easy to carry between zones
  • ✓3-year warranty with Walmart returns
  • ✗3.1 out of 5 from 45 Walmart ratings in its first season
  • ✗4G and anti-theft tracking need a subscription with no published price
  • ✗No published runtime or charge time, and edge cutting stops about 4 in short of borders

Ecovacs GOAT O1000 RTK

  • ✓$999.99 for a mapped, multi-zone RTK mower is the best price in its class
  • ✓Slim 1.31 ft body squeezes through 2.3 ft side-yard gaps
  • ✓TruEdge pass gets close enough to fences that owners retire the string trimmer in most spots
  • ✓Owners report it copes with rough, unmanicured lawns and routes around trees on its own
  • ✓Quietest GOAT at 57 dBA
  • ✗Small 4 Ah battery: about 65 minutes mowing, then 100 minutes charging
  • ✗RTK antenna needs open sky; rural owners report signal drops
  • ✗Thin manual and app onboarding trip up first-time owners
  • ✗No string trimmer and only 45% slope rating versus the LiDAR Pro models