Nilfisk Alto C120.1

Tackling under-body dirt is simple with this as the long lance helps clean hard-to-reach places. As with its sister washer, the C120.1 is more cumbersome and heavier than rival offerings and, infuriatingly, the hose digs into the floor when you drag the main unit around on its wheels.

We liked the solid feel and storage space for ancillary parts, but it's a bit pricey and would benefit from a more adjustable nozzle.