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Review: Greenworks C30Z Wire-Free Robotic Lawn Mower

7.7/10

Our spec-based rating

Very good

Rated from the listing's documented specs, no customer-review data yet · See the Robot Lawn Mowers ranking

Greenworks' C30Z is a wire-free mower for up to 3/4 Acre using RTK and vision fusion with within-1-inch accuracy. It climbs 45% (24°) slopes on 2-wheel drive, adjusts height electronically from 0.75 to 3.5 inches, avoids 200+ objects and carries a 3-year warranty.

Best for: Moderately sloped yards up to 3/4 acre

Key specifications8 / 10
Build, warranty & certifications7 / 10
Listing documentation9 / 10
Fit & compatibility8 / 10

Spec-based rating on a 4.5–8.5 scale: 4.5 + average of the 4 criteria × 0.4. Capped at 8.5 because no customer evidence is included. Not a hands-on test. How we rate

What stands out

  • 3-year warranty
  • Electronic height adjust 0.75-3.5 inches
  • Edges within 4 inches

Worth checking

  • 2-wheel drive limits steep slopes
  • Battery runtime not stated
Compare the stated lawn capacity with your own measured lawn, and the stated slope rating with your steepest section. Wire-free navigation still needs a clear sky view or a stated alternative, and every robot mower needs supervision around children, pets and edges. Confirm the exact model, included base station and current app requirements in the manufacturer manual.
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Product details

Compare the stated lawn capacity with your own measured lawn, and the stated slope rating with your steepest section. Wire-free navigation still needs a clear sky view or a stated alternative, and every robot mower needs supervision around children, pets and edges. Confirm the exact model, included base station and current app requirements in the manufacturer manual.

Exact listing: Greenworks C30Z Wire-Free Robotic Lawn Mower, up to 3/4 Acre, RTKVision Navigation, 24-Degree Slope Climbing, Smart Obstacle Avoidance, App Control with Electric Height Adjustment

Listing identifier: B0GVHYW416. View listing source.

Title identifies the seller's listing; it is not an independent performance test. Check the selected configuration, current price and seller on Amazon.

Documented specifications
Stated lawn capacity
0.75 acres — up to 3/4 Acre Exact Amazon listing title; seller-stated coverage, not a measured result
No perimeter wire
Stated in this listing — Wire-Free Exact Amazon listing text; seller wording
Named navigation
RTK + AI vision — RTK; Vision Navigation Exact Amazon listing text; named navigation technology, not a positioning test
Before you choose

Compare the stated lawn capacity with your own measured lawn, and the stated slope rating with your steepest section. Wire-free navigation still needs a clear sky view or a stated alternative, and every robot mower needs supervision around children, pets and edges. Confirm the exact model, included base station and current app requirements in the manufacturer manual.

These notes summarize source research, not hands-on testing. Read our research method.

Check your lawn coverage margin

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