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Stihl RMI 422 review

£950.00 Typical price

Test scoreShow Context

Expert review

The Stihl RMI 422 has larger wheels than most other robot lawn mowers, with a tread pattern to make sure it can handle cutting the grass on sloping and uneven lawns. We put it to the test in our gruelling tests to see if it can handle whatever challenging terrain your garden might have. Read our full review to see how It fared.

What's included:
  • Pros and cons
  • What is it?
  • What’s it great at?
  • Is there anything I should look out for?
  • Is there anything else I should know?
  • Should I buy it?
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Last checked by Which?

September 2021

First reviewed by Which?

August 2020

Released

January 2019

Technical specifications

General

Test results

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

Find out how we test robot lawn mowers>
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Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

Best Buys and Don't Buys
We have tested 20 robot lawn mowers and found that there are 0 Don't Buys and 5 Best Buys.
Range of Robot lawn mower scores
  1. 70%
    Lowest score
  2. 78%
    Average score
  3. 88%
    Highest score
We'll show you where this model sits on the scale so that you can see how it compares to robot lawn mowers we've tested
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Full Access first month £2.99, then £9.99 per month, cancel at any time

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

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