Greenworks AiMowbot C20Z
#9 in 1/4 to 1 acreFull review
For flat-to-moderate half-acre lawns where a mainstream brand and app-set cutting height matter. It costs more than rivals with similar specs.
Amazon $1,299.99$1,299.99
3.9/5
For small, sloped or cluttered lawns up to about a third of an acre where an all-wheel-drive, wire-free mower with no antenna setup is worth the premium.
- 0.37 acresLawn size
- LiDAR + visionNavigation
- 80% (39°)Max slope
- $4,860Price / acre
- 7.8 inCutting width
- 3 yearsWarranty
Check price at Amazon$1,799Check price at Mammotion$1,799
Price checked October 21, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Climbs 80% slopes, so hilly small yards are covered without help
- Sets up without wires or an RTK antenna; LiDAR maps the lawn
- Separate edge disc cuts within about 2 in of walls, cutting down on trimming
- Three years of 4G data included for remote control away from Wi-Fi
Cons
- Rated for only 0.37 acre
- Narrow 7.8 in main deck needs more passes than wide-deck mowers
- H version can’t cut below 2.2 in
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Coverage | |
|---|---|
| Lawn size (rated) | 0.37 acres (16,100 sq ft) |
| Max slope | 80% (39°) |
| All-wheel drive | Yes |
| Run time per charge | 2 h 30 min |
| Charge time | 2 h 30 min |
| Battery | 6.1 Ah |
| Navigation | |
| Navigation | LiDAR + vision |
| Boundary wire needed | No |
| Obstacle avoidance | 360° LiDAR + dual-camera AI vision, 300+ obstacle types |
| Multiple zones | Yes |
| No-go zones | Yes |
| Cutting | |
| Cutting width | 7.8 in (198 mm) |
| Cutting height | 2.2–4 in |
| Height adjustment | In the app |
| Blades | Main disc with 6 pivoting razor blades plus edge disc with 3 |
| Edge mowing | Side edge disc mows to about 2.1 in from walls |
| Smart features | |
| Connectivity | Wi-Fi, Bluetooth, 4G (3 years of 4G included) |
| Rain sensor | Yes |
| Build | |
| Noise (rated) | 65 dB(A) |
| Water resistance | IPX6 |
| Weight | 39.5 lb (17.9 kg) |
| Warranty | 3 years |
Alternatives in this size
Sunseeker X5
#10 in 1/4 to 1 acreFull review
For half-acre yards with real slopes, where its all-wheel drive beats two-wheel RTK mowers at a similar price. Flat lawns can do with a cheaper model.
Amazon $1,399.99 Sunseeker $1,499.99$1,399.99
Worx Landroid Vision Cloud 4WD 1/2 Acre (WR342)
#12 in 1/4 to 1 acreFull review
For steep or uneven lawns up to half an acre where you want mapped, wire-free mowing without mounting an RTK antenna.
Worx $2,299.99$2,299.99
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