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
The Greenworks AiMowbot C20Z is the better robot lawn mower overall, rated 4.0 to 3.3. The Greenworks AiMowbot C20Z leads on navigation, slopes and value. The Greenworks AiMowbot C20Z costs $272.73 less ($1,299.99 vs $1,572.72).
Worx Landroid Vision AI 1/2 Acre (WR220)
#22 in 1/4 to 1 acreFull review
For lawns up to 1/2 acre with clear grass edges and heavy tree cover, where camera-only guidance avoids both wires and satellite dropouts.
Amazon $1,572.72 Worx $2,499.99$1,572.72
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Greenworks AiMowbot C20Z for navigation (RTK + vision, no boundary wire vs Vision, no boundary wire), slopes (45% (24°) slopes vs 30% (17°) slopes) and value ($2,600 per rated acre vs $3,150 per rated acre).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 1/4 to 1 acre robot lawn mower; a clear win is highlighted. How we rank explains each one.
| Factor weight | Greenworks AiMowbot C20Z | Worx Landroid Vision AI 1/2 Acre (WR220) |
|---|---|---|
| Overall rating | 4.0/5 | 3.3/5 |
| Value 30% | 76 $2,600 per rated acre | 63 $3,150 per rated acre |
| Navigation 20% | 80 RTK + vision, no boundary wire | 45 Vision, no boundary wire |
| Slopes 20% | 36 45% (24°) slopes | 9 30% (17°) slopes |
| Features 15% | 100 5 of 5 | 80 4 of 5; no 4G |
| Warranty 10% | 67 3-year warranty | 67 3-year warranty |
| Noise 5% | 100 54 dB(A) rated | 73 59 dB(A) rated |
Specifications
| Greenworks AiMowbot C20Z | Worx Landroid Vision AI 1/2 Acre (WR220) | |
|---|---|---|
| Coverage | ||
| Lawn size (rated) | 0.5 acres (21,800 sq ft) | 0.5 acres (21,800 sq ft) |
| Max slope | 45% (24°) | 30% (17°) |
| All-wheel drive | No | No |
| Battery | - | 20 V 4 Ah |
| Navigation | ||
| Navigation | RTK + vision | Vision |
| Boundary wire needed | No | No |
| Obstacle avoidance | AI cameras + ToF camera + night-vision sensors (200+ object types) | 140° HDR camera with AI recognition |
| Multiple zones | Yes | Yes |
| No-go zones | Yes | - |
| Cutting | ||
| Cutting width | 7.9 in (200 mm) | - |
| Cutting height | 0.8–3.5 in | 1.5–3.5 in |
| Height adjustment | In the app | - |
| Edge mowing | Edge mowing to within 4 in | Cut-to-Edge border cutting |
| Smart features | ||
| Connectivity | - | Wi-Fi, Bluetooth |
| Rain sensor | - | Yes |
| Build | ||
| Noise (rated) | 54 dB(A) | 59 dB(A) |
| Water resistance | IPX6 | IPX5 |
| Weight | - | 33.3 lb (15.1 kg) |
| Warranty | 3 years | 3 years |