Well, the answer is yes... and no. When used properly, powered washers rinse away more dirt and soils than your typical garden hose in just a fraction of the time, leaving a smoother, glossier finish. But, without the right know-how and equipment, a pressure washer could potentially damage your paintwork.

Use the fan jet nozzle and start at the lowest pressure setting; be sure to maintain a minimum distance of 30 cm from the car so that you do not damage the paint or the delicate rubber parts. With the water jet directed so that it is at a shallow angle to your car, rinse away any coarse dirt.

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If your jet washer doesn't have an attachable foamer, you can add the layer of foam yourself using a sponge and warm water. Leave the foam on your car for a short while, so it can do its work. But don't let it dry, or it will leave stains. Rinse – Now you just need to rinse off the foam with the pressure washer.