· Watch out for the initial burst of water that comes out of the pressure washer when you first turn it on. There can be a strong initial spray, so point the nozzle at the ground first.
· Try to pressure wash the car on concrete rather than on a gravel driveway to avoid the possibility of stones flying up and hitting the paintwork.
· Make sure all your windows are closed properly.
· Check the interior of your car after spraying to see if any of the doors have leaking seals.
· Use a rotary (or tornado) nozzle attachment when cleaning your car. It will be too strong and could damage paintwork.
· Use a strong spray on areas where paint is chipped as it could strip more paint away.
· Use a high spray setting on old tyres, as it has been known to make them explode.
· Ever spray the engine bay, the boot or the interior - unless you fancy buying a new car.
· Point the spray directly at panel gaps for too long as these areas will be most susceptible to leaks.
Get more buying advice with our guide on How to buy the best pressure washer.