# Yarbo Y40 Core with Lawn Mower Pro review

Tracked modular yard robot with a 20 in mower for big, steep land

- Our score: 5.6 out of 10
- Price: $5,999 (checked Nov 11, 2026)
- Status: on sale
- Best for: multi acre, steep properties
- Skip if: your lawn is under an acre
- HTML version: https://robotsforthat.com/robot/yarbo-y40-core-lawn-mower-pro/

## Verdict

This is for owners of several acres with steep, rough ground who also want snow or leaf modules later. Tom's Guide found it climbed a steep incline and rarely hit obstacles, but setup took a weekend and it needed an Ethernet cable. Anyone with a normal suburban lawn should skip it and buy a simpler wheeled mower.

## Pros

- Rated for up to 6.2 acres
- Tracks climb 70% slopes
- 20 in cutting width
- Same Core takes snow and blower modules

## Cons

- Very expensive
- Long, involved setup
- Wired Ethernet link to the data center used in tests
- Heavy to swap modules

## Specs

- area: Up to 6.2 acres (Wellbots listing, Tom's Guide)
- max slope: 70% (35°) (Wellbots listing, Tom's Guide)
- navigation: RTK GPS with vision, IMU and odometry (Wellbots); Tom's Guide lists six HD cameras and two ultrasonic radars
- boundary wire: Not needed; maps the yard with cameras and sensors (Consumer Reports preview)
- cut width: 20 in (50 cm) (Wellbots, Tom's Guide)
- cut height: 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: 1.38 kWh, about 120 min of mowing per charge, 90 min to recharge (Wellbots); Tom's Guide lists a 38.4Ah battery
- drive: Tracked all terrain Core (Wellbots, Tom's Guide); the Pro module has two 300 W motors, twice the classic module (Notebookcheck)
- rtk required: Yes, RTK base station in the box (Wellbots)
- multi zone: Up to 100 mowing areas (Tom's Guide)
- noise: 60 dB (Wellbots)
- weather: IPX6 (Wellbots)

## Safety

- recalls: Not checked
- fcc: Not checked
- company status: Active

## Questions buyers ask

### Can I buy the Lawn Mower Pro module without the Core?

The module needs a Yarbo Core to run. Yarbo's own price list shows the Y40 Core plus Lawn Mower Pro bundle at $5,999 and no standalone Core price.

### Does it need a wired connection?

Tom's Guide and GStyle both ran an Ethernet cable to the Yarbo data center because Wi-Fi was unreliable or required.

### Can it clear snow too?

Yes, with the Snow Blower Gen 2 module. Yarbo lists a Core with Snow Blower Gen 2 and Lawn Mower Pro bundle at $8,199.

## Sources

1. [Yarbo Lawn Mower Pro product page (US)](https://www.yarbo.com/products/yarbo-lawn-mower-pro)
2. [Yarbo robot lawn mower price guide (Yarbo, US prices)](https://www.yarbo.com/blog/robot-lawn-mower-price-guide)
3. [Wellbots, Yarbo Lawn Mower Pro (Core + Lawn Mower Pro Module)](https://www.wellbots.com/products/yarbo-lawn-mower-pro-core-lawn-mower-pro-module)
4. [Notebookcheck, Yarbo gets improved mowing attachment](https://www.notebookcheck.net/Now-mows-even-better-Versatile-garden-robot-Yarbo-gets-improved-mowing-attachment-for-tall-grass.1044149.0.html)
5. [Tom's Guide, I tested the Yarbo Pro robot mower](https://www.tomsguide.com/home/i-tested-the-yarbo-pro-robot-mower-heres-why-it-wasnt-worth-the-hype-for-us)
6. [Stuff, Yarbo review](https://www.stuff.tv/?p=963636)
7. [Consumer Reports, Yarbo modular robot preview](https://www.consumerreports.org/home-garden/yarbo-modular-robot-review-a1192484202/)