Stihl iMow 422P Review (2021)

The work horse

By Lawnbot on 28 April 2021
stihl imow 422p review
Our Verdict
The Stihl iMow 422P is definitely a strong contender in the increasingly competitive robot lawnmower market. With features like automatic scheduling, automatic recharging and a well-developed mobile app, the iMow has all the features you'd expect to have in a robotic mower in 2021. This model does seem to struggle on thicker species of grass as the wheels can get clogged quite frequently, under the deck also builds up excess grass quite quickly so you'll need to clean the 422P more frequently than robotic mowers in the market.

Price Range: AU$1800-$2000

Max Mowing Area: 1500m²

Max Slope: 22º

Battery Life: 75 Minutes

Warranty: 5 Years



+Well-developed mobile app


+Reliable and sturdy design

+5 year warranty


-Frequent grass & dirt buildup 

-Can struggle on thick species of grass

stihl imow 422p

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stihl imow 422p

STIHL iMow 422P


Quick Review

The Stihl iMow 422P is a compact and robust robotic lawnmower, it's smaller design allows it to navigate through obstacles and tight spots easily and efficiently. In terms of the working area, the iMow 422P can handle lawns of up to 1500m² but would be best suited to areas of up around 750-1000m² due to it's shorter battery capacity of around 75 minutes of mowing time in between each charge of 90 minutes. This robotic mower by Stihl comes equipped with all the fancy features you'd expect from a top of the line model. These include auto-scheduling, auto-charging, safety sensors and a great mobile app. If you've been considering buying a robot mower to help out with mowing your lawn, the iMow is a good option to consider. With a lovely 5 year warranty, you won't need to worry about your robot mower repair-wise for a very long time. In terms of maintenance, the Stihl iMow 422P is going to require a bit of extra TLC when compared to other robot mowers in its class, this is due to its tendency to build up grass residue and dirt more quickly than others. You'll need to clean your 422P at least once or twice a weak to keep it working at peak performance.

Stihl iMow 422P Pricing

The iMow 422P retails at around AU$1800-$2000. While this does seem a bit expensive when comparing it to other robot mowers in its class, you need to take into account the impressive 5-year warranty that you'll be getting with the purchase of this mower.

Stihl iMow 422P Specifications

  • Main Features

    Warranty: 5 years

    Lawn Size: Up to 1500mº

    Maximum Slope: 22º

    Mobile App: Yes

    Voice Control: No

    Wifi Connected: No

    Auto-Charging: Yes

    Auto-Scheduling: Yes

  • Cutting

    Cutting Range: 2-6cm

    Cutting Width: 20cm

    Cutting System: 2 rotating cutting blades

  • Battery

    Mowing Time: 75 mins

    Charging Time: 90 mins

    Battery Type: Lithium-Ion

    Battery Voltage: 18.5V

    Battery Capacity: 4.5Ah

  • Noise

    Noise Output: 60db

  • Safety

    Life Sensor: Yes

    Tilt Sensor: Yes

    Emergency Stop: Yes

  • Security

    Pin Code: Yes

    Alarm: Yes

    Shut Off: Yes

  • Dimensions

    Size: 600x430x270mm

    Weight: 9kg

lawnbot (6)

Lawnbot Rating

4.1/5 Stars