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Kärcher K4

Kärcher K4
alaScore 93

615 reviews

Nov, 2024

alaTest has collected and analyzed 615 reviews of Kärcher K4. The average rating for this product is 4.6/5, compared to an average rating of 4.2/5 for other products in the same category for all reviews. People really like the reliability and design. The size and price also get good feedback.

usability, price, size, design, reliability

We analyzed user and expert ratings, product age and more factors. Compared to other products in the same category the Kärcher K4 is awarded an overall alaScore™ of 93/100 = Excellent quality.

Review analysis

(Based on 615 reviews)

Expert Reviews  

User Reviews  

Showing 588 review(s)

Expert Reviews User Reviews

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Showing 1 - 10 of 588 Show Reviews: in English | in other languages (26)

Expert review by : Robert Jones (t3.com)

Kärcher K4 Full Control Home Pressure Washer review

 

The Kärcher K4 Full Control Home Pressure Washer is a fantastic all-round system, delivering quality results in every application

Aug, 2020

Expert review by (which.co.uk)

Karcher K4 Full Control review

  (Rating Hidden)

Karcher introduced its 'Full Control' range of premium pressure washers in 2016. They are supposed to make it easier to choose the right strength of spray for your surfaces. The Karcher K4 Full Control is one of the cheaper models in the Full Control...

May, 2017

Consumer review (which.co.uk)

By far the best.

  (Rating Hidden)

Having had many pressure washers over the years the K4 is by far the best. The patio cleaner is superb, it cleans my drive far better than the K2, the rotary lance is very good for very stubborn stuff and the Variable fan-jet lance good for rinsing...

Sep, 2015

Consumer review (which.co.uk)

Fed up Tom

  (Rating Hidden)

This is my 2nd Karcher, 1st one didn't get heavy use so I couldn't judge reliability easily. I've made a note of this K4 which has lasted 4 Springtime washes of my forecourt and deck area and is already pulsing on and off with insufficient power to run...

Aug, 2015

Consumer review (which.co.uk)

Great for cleaning decking and patios. Patio head great ignor which? comments

  (Rating Hidden)

Was worried about which? comments about patio head not as good at cleaning as lance, but amazed by results on my 20 year old deck boards, amost brought back to new. Patio head is cleaning about 100 times area of lance so would not expect it to be as...

Jul, 2015

Consumer review (which.co.uk)

Warning: Why pressure washers spring leaks

  (Rating Hidden)

Thank you to everyone who has mentioned that they have had a problem with their Karcher pressure washer, which has developed a leak after it has been used for a while. This is a very common problem with all types of pressure washer that have plastic...

Jul, 2015

Consumer review (which.co.uk)

Karcher K4

  (Rating Hidden)

Second karcher I've had. Again like others I've purchased karcher due to Which's best buy. They perform as stated but the reliability i find appaulling. There seems to be a weakness where something splts inside and water gushes out. Nobody seems to...

Jul, 2015

Consumer review (which.co.uk)

Like previous one it leaked and pulsed in second year

  (Rating Hidden)

These are not cheap devices to buy and I feel let down that my K4_600 has leaked and pulsed like an earlier model. I was amazed about the internet traffic about this problem. I am now scouring Which to find an alternative.Another disappointing thing is...

Apr, 2015

Consumer review (which.co.uk)

dee gee tee

  (Rating Hidden)

Its good to use, it takes a bit of setting up when we use water from the drain water barrels, but its cheap to run in that mode, the only problem is the main pressure hose is a bit short, so we bought a extention hose, that solved the problem,when...

Feb, 2015

Consumer review (which.co.uk)

A real step up from the K2 Series

  (Rating Hidden)

My 5 year old K2 was starting to fail after sterling service but I felt the need to try a more powerful model.After investigations I plumped for the K4 with Patio Cleaner bundle and having used it to clean the drive, the patio and the car twice I am...

Feb, 2015

Price comparison for Kärcher K4