Is the Sunseeker X7 Gen 2 or the Yarbo Y40 Lawn Mower Pro better?

Wire-free. RTK positioning from a dedicated antenna station (linked by LoRa radio, no 4G needed) fused with VSLAM 2.0 visual mapping, with binocular and iToF depth cameras for obstacles. All-wheel drive: three independently driven wheels with rear active steering.

Wire-free. RTK GNSS from the included Data Center base station, or network RTK where coverage exists, with binocular cameras, ultrasonic sensors and a bumper for obstacles; rubber tracks rather than wheels. A modular yard robot: the Y40 core also takes snow-blower, blower and trimmer modules.

Cutting

35 cm (13.8 in) cut, 20 to 100 mm (0.8 to 3.9 in) height, about 60 dB

50 cm (19.7 in) cut, 20 to 100 mm (0.8 to 3.9 in) height, about 60 dB

Battery runtime

–

120 min

Rain

Rain sensor (IPX5)

Rain detection (IPX5 on the core's spec)

Anti-theft

An optional 4G-GPS module adds location tracking, geofencing and boundary alerts

4G GPS tracking, geofence alerts and movement notifications (4G free for a year, then a paid plan)

Connectivity

Wi-Fi and Bluetooth (4G with the optional module); Alexa and Google Home; over-the-air updates

4G, Wi-Fi, Wi-Fi HaLow and Bluetooth

Best for

Large lawns Steep & terraced

Estate lawns Steep & terraced

Released

2026

2025

Brand

Sunseeker

Yarbo

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 X7 Gen 2

For most lawns, the Sunseeker X7 Gen 2 is the better buy at $2,599: it matches its 70% slope rating and RTK + Vision navigation, about $2,900 less than the Yarbo Y40 Lawn Mower Pro. Step up to the Yarbo Y40 Lawn Mower Pro only if your lawn is larger than 3,035 m² (0.75 acre).

From $2,599

The bottom line

What actually differs

Sunseeker X7 Gen 2 has the lower price ($2,599).
Yarbo Y40 Lawn Mower Pro covers the most lawn (24,281 m² (6 acres)).

Go deeper

Open the full record

Sunseeker X7 Gen 2 Yarbo Y40 Lawn Mower Pro

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.