Segway Navimow X390 vs Yarbo Y40 Core with Lawn Mower Pro
Researched by Riley Hart · prices checked Nov 11, 2026
As of Nov 11, 2026, the Segway Navimow X390 costs $4,499 and the Yarbo Y40 Core with Lawn Mower Pro costs $5,999, so the Segway Navimow X390 is $1,500 cheaper. The Yarbo Y40 Core with Lawn Mower Pro has a published review score and ranks #13 in our robot lawn mowers ranking; the Segway Navimow X390 is not scored yet. Pick the Segway Navimow X390 for large open properties up to 2.5 acres. Pick the Yarbo Y40 Core with Lawn Mower Pro for multi acre, steep properties. The Yarbo Y40 Core with Lawn Mower Pro wins 3 of 6 points we can measure (1 tied).
Who wins, point by point
The Yarbo Y40 Core with Lawn Mower Pro wins 3 of 6 points we can measure (1 tied). Built from today's prices, the specs and independent tests for these two robots.
| X390 | Y40 Core with Lawn Mower Pro | Winner | |
|---|---|---|---|
| Price today | $4,499 | $5,999 | X390 |
| Lawn size | 2.5 acre | 6.2 acre | Y40 Core with Lawn Mower Pro |
| Steepest slope | 50% | 70% | Y40 Core with Lawn Mower Pro |
| Cut width | 9.3 in | 20 in | Y40 Core with Lawn Mower Pro |
| Runtime per charge | 4 h | 2 h | X390 |
| Noise | 60 dB | 60 dB | Tie |
- You want to spend less (saves $1,500)
- You care most about runtime per charge (4 h vs 2 h)
- Best for large open properties up to 2.5 acres
- You care most about lawn size (6.2 acre vs 2.5 acre)
- You care most about steepest slope (70% vs 50%)
- You care most about cut width (20 in vs 9.3 in)
- Best for multi acre, steep properties
- Area
- Up to 2.5 acres
- Max slope
- 50%
- Navigation
- EFLS 3.0: RTK
- Cut width
- 9.3 in
Top X3 model with RTK and vision for lawns up to 2.5 acres
Full Segway Navimow X390 review, pros and cons →- Area
- Up to 6.2 acres
- Max slope
- 70%
- Navigation
- RTK GPS
- Cut width
- 20 in
Tracked modular yard robot with a 20 in mower for big, steep land
Full Yarbo Y40 Core with Lawn Mower Pro review, pros and cons →Side by side
| Segway Navimow X390 | Yarbo Y40 Core with Lawn Mower Pro | |
|---|---|---|
| Price | $4,499 | $5,999 |
| 3 year cost | $4,499 | $5,999 |
| Our score | Not scored yet | 5.6/10 |
| Rank in Lawn | #45 | #13 |
| Status | on sale | on sale |
| Warranty | 3 years (Navimow) | n/a |
| Area | Up to 2.5 acres; map can reach 1.2x that (Navimow) | Up to 6.2 acres (Wellbots listing, Tom's Guide) |
| Max slope | 50% (27°), 25% (14°) at the boundary (Navimow) | 70% (35°) (Wellbots listing, Tom's Guide) |
| Navigation | EFLS 3.0: RTK plus VSLAM and visual inertial odometry, 300° RGB and ToF obstacle detection (Navimow) | RTK GPS with vision, IMU and odometry (Wellbots); Tom's Guide lists six HD cameras and two ultrasonic radars |
| Boundary wire | Not needed | Not needed; maps the yard with cameras and sensors (Consumer Reports preview) |
| Cut width | 9.3 in, single 6 blade disc (Navimow) | 20 in (50 cm) (Wellbots, Tom's Guide) |
| Cut height | 2 to 4 in (Navimow US) | 0.8 to 4.0 in per the Wellbots listing; Tom's Guide lists 1.2 to 4 in; Notebookcheck reported 2 to 10 cm |
| Battery runtime | 12.8Ah, up to 240 min per charge, about 100 min recharge (Navimow) | 1.38 kWh, about 120 min of mowing per charge, 90 min to recharge (Wellbots); Tom's Guide lists a 38.4Ah battery |
| Drive | Rear wheel drive with traction control, same X3 platform as the X350; no AWD | Tracked all terrain Core (Wellbots, Tom's Guide); the Pro module has two 300 W motors, twice the classic module (Notebookcheck) |
| Rtk required | Network RTK where covered; RTK antenna for other areas (Navimow, Notebookcheck) | Yes, RTK base station in the box (Wellbots) |
| Multi zone | Multiple zones linked by channels; Pro Tool Reviews mapped 4 zones and 3 channels in under 30 min | Up to 100 mowing areas (Tom's Guide) |
| Noise | 60 dB(A) (Navimow) | 60 dB (Wellbots) |
| Weather | IP66; pauses in rain and resumes (Pro Tool Reviews) | IPX6 (Wellbots) |
| Best for | large open properties up to 2.5 acres | multi acre, steep properties |
| Skip if | your yard is under an acre or very hilly | your lawn is under an acre |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
Segway Navimow X390
- Pro Tool Reviews: Tested the X390 on a multi acre property with 4 zones and 3 channels. Mapping took under 30 min, it handled narrow paths, wet grass and minor slopes without slipping and dodged toys and beds. Early passes left uneven spots that improved later, and a hilly, thick grass run covered 43% (6,131 sq ft) before a recharge. Source
- Notebookcheck: Testing the X3 series (X315 unit), it called the line one of the best robot mowers of 2025: reliable mowing, systematic paths and near flawless camera obstacle detection. Downsides were high standby power use, the need for an RTK antenna and a high price, with the X390 listed at $4,999 RRP. Source
Yarbo Y40 Core with Lawn Mower Pro
- Tom's Guide: Tested the Yarbo Pro mower on about an acre for roughly a month. Mowing was strong, it climbed a steep backyard incline and rarely hit obstacles, and blades stayed sharp. Setup took an entire weekend and Wi-Fi was unreliable, so the tester ran an Ethernet cable through a window. Verdict: overkill for most homes. Source
- Stuff (4/5): Used the Yarbo Core with the standard mower module (20 in, two discs with five blades each) for a few months. It mowed the whole garden in about 2 hours and came back with 40% battery. Setup is involved and module swaps are heavy. Note this was the classic mower module, not the Pro. Source
Questions buyers ask
Which is better, the Segway Navimow X390 or the Yarbo Y40 Core with Lawn Mower Pro?
The Yarbo Y40 Core with Lawn Mower Pro has a published review score and ranks #13 in our robot lawn mowers ranking; the Segway Navimow X390 is not scored yet. Pick the Segway Navimow X390 for large open properties up to 2.5 acres. Pick the Yarbo Y40 Core with Lawn Mower Pro for multi acre, steep properties.
Which is cheaper?
The Segway Navimow X390 at $4,499, versus $5,999 for the Yarbo Y40 Core with Lawn Mower Pro, checked Nov 11, 2026.
What is the difference between the X390 and the Y40 Core with Lawn Mower Pro?
Area: Up to 2.5 acres; map can reach 1.2x that (Navimow) on the X390, Up to 6.2 acres (Wellbots listing, Tom's Guide) on the Y40 Core with Lawn Mower Pro. Max slope: 50% (27°), 25% (14°) at the boundary (Navimow) on the X390, 70% (35°) (Wellbots listing, Tom's Guide) on the Y40 Core with Lawn Mower Pro. Navigation: EFLS 3.0: RTK plus VSLAM and visual inertial odometry, 300° RGB and ToF obstacle… on the X390, RTK GPS with vision, IMU and odometry (Wellbots); Tom's Guide lists six HD cameras and… on the Y40 Core with Lawn Mower Pro.
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