Karcher K4 Full Control Home & Car Pressure Washer Review (2021)

Last Updated on March 16, 2021

Kärcher K4 Full Control Premium Car and Home Pressure Washer

reviewer rating

  • Pressure Amount 80% 80%
  • Water Flow 80% 80%
  • Cost 70% 70%
  • Overall Rating 78% 78%


The Karcher full control home pressure washer is the older brother to the Karcher K2. If you are looking for something just as good but not as expensive, then check out our review of the Karcher k2 here.

The Kärcher K4 full control includes some great accessories so there’s no need to purchase anything individually.

Included are the T350 Patio cleaner and 1L of stone and facade detergent (although we would recommend using a homemade detergent), a cleaning brush, foam nozzle, and car shampoo.

Karcher has developed the K4 full control home pressure washer to be an expert in two areas. Patio cleaning and car washing.

Why Should You Buy?


Great pressure washer for a medium-priced unit


Great value for money with included accessories


Tailored towards patio cleaning and car washing


LED display to control pressure settings (batteries included)


420 litres per hour for getting jobs done quickly


Foam nozzle is great for cleaning cars


Why we love the Kärcher k4 Full Control Home Pressure Washer

We love the k4 full control home pressure washer for a few key reasons. The deal we are talking about has a lot of accessories included which makes it great for value for money.

It is an expert in cleaning patios/driveways as well as cars.

We love that it’s got a great water flow which can reduce the amount of time that it takes to complete jobs drastically.

The K4 full control home offers the best cleaning power over the smaller, cheaper K2. Being beaten on the list of the best electric pressure washers only due to price and compatibility.

What we don’t like about the Kärcher K4 full control Pressure Washer

Despite the price tag associated with Karcher products, this one has a cheaper feel to the main body.

We of course don’t get to review product over a year, usually only over a day but it has been reported that over time, the O-rings wear and leaks from the main body start to cause problems with the running of the Karcher k4.

  • Weight: 11.95kg
  • Water Flow Rate: 420 Litre per hour
  • Max Pressure: 130 BAR
  • Power Cord: 5M
  • Hose Length: 6M (additional 6m hose available, sold separately)
  • Requires batteries: Yes (Included)


  • Kärcher K4 full control pressure washer
  • Vario lance
  • LED display trigger gun with a pressure setting control
  • dirt blaster
  • 6m high pressure hose
  • T350 patio rotary brush
  • 1 litre 3-in-1 stone cleaner
  • 1 litre 3-in-1 car shampoo
  • foam nozzle for each detergent application
  • WB100 wash brush.

Best Uses For the Karcher k4 full control pressure washer:

The name gives it away for this unit and the karcher k4 full control home and car is best used for the patios/driveways and cleaning the car.

The pressure this unit outputs is perfect for cleaning the car and team it with the foam nozzle and you can have a medium-sized car cleaning in less than 15 minutes.

The full control pressure washer also comes with a T350 patio brush, and teamed with the 3-in-1 facade cleaner will leave your patio looking like new.

Who are Karcher? 

Kärcher, the creators of the Karcher k4 full control, is an international company part of a larger group of companies all specialising in the industrial cleaning industry.

Karcher offers a huge range of pressure washers and has lots of others available if the Karcher k4 full control isn’t for you.

Latest Deal for Karcher Pressure Washers

Jeff Kirby
Jeff Kirby


Jeff is our head reviewer here at PressureWashersReview.co.uk and has over 10 years in the commercial pressure washing business. What he doesn’t know about pressure washers isn’t worth knowing.