We review the powerful Karcher K4 Full Control pressure washer with new features, a new sleek design and LED Trigger gun perfect for your Car & Patio. Delivered within 3-5 days the washer arrived in one piece in a fully branded Karcher box. The K3 Full Control displays the pressure on the trigger gun ensuring the right pressure for every surface. The new K3 sounds quieter and … Find Karcher K3 Premium Full Control Home Deck And Car Pressure Cleaner at Bunnings Warehouse. On sale through Ideal World at £199 (RRP £319.93) the Karcher K3 is a pressure washer is designed for occasional use and for light soiling on cars, bicycles, garden fences, motorcycles, patio and much more. Read our full review here. A great all rounder that makes a perfect choice with many uses. (It still works but was getting very loud, I think the motor almost had it). I upgraded from older Karcher model which was at least 15 years old. Find helpful customer reviews and review ratings for Kärcher K4 Full Control Home Pressure Washer at Amazon.com. K3 Full Control is the ideal pressure washer for occasional use on light dirt. Read honest and unbiased product reviews from our users. Visit your local store for the widest range of tools products. The previous one to that died after 5 years when I mixed bleach into the mixture (will never do that again!)