Karcher K4 Premium Full Control Home review
Test scoreShow Context
look

The £330 Karcher K4 Premium Full Control pressure washer is supplied with a T350 patio cleaner and detergent, five-year warranty and hose storage reel. It has an innovative trigger gun that's designed to help you choose the right spray strength for your surface. But does it help? Our expert used this pressure washer on a driveway and decking to bring you her first impressions.
- Pros and cons
- What is it?
- What's it great at?
- Is there anything I should watch out for?
- Is there anything else I should know?
- Which? first look verdict

Technical specifications
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 pressure washersPut 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.
Compare retailers
Prices updated dailyPrices are ordered from lowest to highest, irrespective of retailer rating or stock. We are not able to show every possible retailer and cheaper prices may be available. When you click on a retailer link on our site, we may earn affiliate commission. This supports our not-for-profit mission to empower consumers and in no way affects our recommendations. Find out more.
RetailerRetailer star rating | Price | In stock | |
---|---|---|---|
Coolshop Not rated | £269.00 | Go to store | |
Amazon Marketplace UK Not rated | £339.99 | Go to store |
Make smarter choices
- 53%Lowest score
- 71%Average score
- 84%Highest score
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.
Suggested alternatives
Related articles
How to buy the best pressure washer
Use our expert buying advice and impartial reviews to help you choose the best pressure washer. The Which? Gardening experts offer advice on whether to buy electric or petrol, costs and compare pressure washers we’ve tested.
Pressure washer features explained
When it comes to choosing a pressure washer, the difference between models and prices comes down to which accessories you want. The Which? experts explain what all the accessories do to help you decide which ones you really need.