Head to head
Sunseeker S4 vs Sunseeker X5
Price, coverage, slope, navigation, and drive for Sunseeker S4 and Sunseeker X5, side by side and cited.
- Store prices · checked 6 h agoVerified · checked 2 wk ago
2compared
2,000 m² (0.49 acre)largest lawn
Sunseeker S4 (Sunseeker S4)·Sunseeker X5 (Sunseeker X5)
Price
Your lawn
Set your lawn to see which of these fits it.
Drive
2-wheel drive
All-wheel drive
Obstacle avoidance
Navigation
Wire-free. A 360° 3D LiDAR fused with an AI camera (L-SLAM plus V-SLAM), no RTK antenna, base station or perimeter wire.
Wire-free. RTK GNSS fused with visual SLAM and binocular AI cameras (AONavi); the included RTK base station mounts with a clear view of the sky. All-wheel drive.
Cutting
18 cm (7.1 in) cut, 41 to 81 mm (1.6 to 3.2 in) height, about 60 dB
22 cm (8.7 in) cut, 41 to 81 mm (1.6 to 3.2 in) height, about 60 dB
Rain
Rain sensor sends it back to the dock (the LiDAR cannot measure in rain or fog); IPX6
Rain sensor: stops and returns to the dock when rain is detected (IPX5)
Anti-theft
PIN code and lift and tilt sensor; a 4G-GPS anti-theft module is optional
PIN code and lift and tilt sensor; a 4G-GPS anti-theft module is optional
Connectivity
Wi-Fi and Bluetooth; optional 4G module; Alexa and Google Home; over-the-air updates
Wi-Fi (2.4 GHz) and Bluetooth; optional 4G-GPS module; Alexa and Google Assistant
Released
2026
2024
A check marks the lower price, the higher score, the larger coverage, and the steeper slope. Our pick below is derived from those same specs; the right choice still depends on your lawn, your budget, and how you'll use it.
Our pick
Which to buy
Best buySunseeker S4
For most lawns, the Sunseeker S4 is the better buy at $1,279.99: it covers up to 1,000 m² (0.25 acre), about $220 less than the Sunseeker X5. Step up to the Sunseeker X5 only if your lawn is larger than 1,000 m² (0.25 acre) or steeper than 42%.
From $1,279.99The bottom line
What actually differs
- Sunseeker S4 has the lower price ($1,279.99).
- Sunseeker X5 covers the most lawn (2,000 m² (0.49 acre)).
- Sunseeker X5 handles the steepest slopes (up to 60%).
Go deeper
Open the full record
BestRobotMower.co is an independent informational comparison site, not a manufacturer or a retailer. Specifications and prices are curated from public sources and can change or be incomplete. Always confirm the current spec, price, and availability with the manufacturer or seller before buying. Coverage and slope figures are rated maximums on an open lawn; real performance depends on your yard.