Both the K2 and K4 come with 6 meter hoses as standard and both lack built-in hose reels, something the K7 includes. The differences between the Kärcher K4 and Kärcher K2 are fairly small ...

and some may even have hose reels. Heavy duty are best for cleaning extensive areas of paving, grimy larger vehicles, commercial vehicles and caravans. The priciest washers on the market tend to be ...

In this category, the K7 is the clear winner: 10 meters to the K4's 6 meters. The K7 also has a built-in hose reel. For some, the differences between the K4 and K7 will be meaningful, especially ...