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 3.6. The Greenworks AiMowbot C20Z leads on value and noise. The Greenworks AiMowbot C20Z costs $899.01 less ($1,299.99 vs $2,199).
Segway Navimow H220
#16 in 1/4 to 1 acreFull review
For a half-acre yard with trees or buildings that block GPS. It adds a rain sensor and a wider cut over the i2 LiDAR.
Navimow $2,199$2,199
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 value ($2,600 per rated acre vs $4,400 per rated acre) and noise (54 dB(A) rated vs 60 dB(A) rated).
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 | Segway Navimow H220 |
|---|---|---|
| Overall rating | 4.0/5 | 3.6/5 |
| Value 30% | 76 $2,600 per rated acre | 36 $4,400 per rated acre |
| Navigation 20% | 80 RTK + vision, no boundary wire | 85 LiDAR + vision, no boundary wire |
| Slopes 20% | 36 45% (24°) slopes | 36 45% (24°) slopes |
| Features 15% | 100 5 of 5 | 100 7 of 7 |
| Warranty 10% | 67 3-year warranty | 67 3-year warranty |
| Noise 5% | 100 54 dB(A) rated | 67 60 dB(A) rated |
Specifications
| Greenworks AiMowbot C20Z | Segway Navimow H220 | |
|---|---|---|
| Coverage | ||
| Lawn size (rated) | 0.5 acres (21,800 sq ft) | 0.5 acres (21,800 sq ft) |
| Max slope | 45% (24°) | 45% (24°) |
| All-wheel drive | No | No |
| Run time per charge | - | 3 h 40 min |
| Charge time | - | 2 h |
| Battery | - | 216 Wh, 21.6 V 10 Ah |
| Navigation | ||
| Navigation | RTK + vision | LiDAR + vision |
| Boundary wire needed | No | No |
| Obstacle avoidance | AI cameras + ToF camera + night-vision sensors (200+ object types) | LiDAR + AI camera, 200+ obstacle types, bumper |
| Multiple zones | Yes | Yes |
| No-go zones | Yes | Yes |
| Cutting | ||
| Cutting width | 7.9 in (200 mm) | 8.7 in (220 mm) |
| Cutting height | 0.8–3.5 in | 2–4 in |
| Height adjustment | In the app | In the app |
| Blades | - | 6 blades on an anti-clogging cutting disc |
| Edge mowing | Edge mowing to within 4 in | EdgeSense edge cutting |
| Smart features | ||
| Connectivity | - | Wi-Fi, Bluetooth, 4G (1 year of 4G included) |
| Rain sensor | - | Yes |
| Build | ||
| Noise (rated) | 54 dB(A) | 60 dB(A) |
| Water resistance | IPX6 | IP66 |
| Weight | - | 35.8 lb (16.2 kg) |
| Warranty | 3 years | 3 years |
| Released | - | 2026 |