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We currently only cover the following areas : Gloucestershire, South Herefordshire and Monmouthshire

The compact RMI 422 robot mower will mow small to medium sized lawns of up to approx. 800 m² and is designed to do this in the shortest time possible, allowing you full access to your garden when you want it. As it is fully automated, once iMOW® is installed, it will mow, charge and adapt its schedule all by itself. If the robot mower battery runs low or it starts to rain, the RMI 422 will return itself to the docking station, and depending on how much of the lawn still needs to be cut, it will decide whether to charge itself quickly or slowly helping to conserve power.

Fitted with a robust mulching blade, your grass will be finely shredded returning vital nutrients back into the soil. This also eliminates the need to dispose of any grass clippings. The iMOW® RMI 422 boasts 15 different cutting height settings, varying from 20mm-60mm so you can adjust it to suit you and your lawn! The RMI 422 comes with a 5 year extended domestic warranty (subject to registration and annual servicing). For more information please contact your local iMOW® dealer.

The STIHL iMOW® robotic mowers comply with all applicable safety standards. However, the iMOW® robotic mower is not a toy. During the iMOW® robotic mower's active times, children, bystanders and animals must be kept out of the working area. Please refer to the operating instructions for further information.


  • Fully automatic robotic mower
  • For lawns up to 800 m² (RMI 422), 1500 m² (RMI 422 P) and 1700 m² (RMI 422 PC) and gradients up to 35%
  • Mulching mower unit cuts, shreds, and fertilises lawn
  • Integrated rain sensor
  • Completes the dynamic mowing plan by itself

STIHL RMI 422 iMOW® Robotic Mower

SKU: 6301-012-1402
PriceFrom £1,110.00
Sales Tax Included
  • Maximum lawn area 800 m² (RMI 422), 1500 m² (RMI 422 P), 1700 m² (RMI 422 PC)
    Average mowing duration per week 16 h
    Working speed 4450 rpm
    Cutting height 20-60 mm
    Rated power 60 W
    Uncertainty factor Sound pressure level KpA 2 dB(A)
    Battery type Lithium Ion
    Weight 9 kg
    Measured sound power level LWA 60 dB(A)
    Max. gradient 35 %
    Cutting width 20 cm
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