I had two Karchers and a Halfords pressure washer fail on me. The Karchers fail because they have a plastic pump (unless you pay over £200 for one) so they just don't last. The Halfords one just burnt out the motor. I bought a (well-researched) Nilfisk which has been absolutely superb for almost three years and still going strong. Also has a 8m pressure hose which makes it much easier to get all the way around the car without moving the washer itself. Thoroughly recommended.
