Yes, they are safe for usage on any car or vehicle. And they clean as good as the professionally clean car. But to make sure you are getting the most of this device and will not be damaging the vehicle you have to keep a few details in mind. Firstly, the type of water you use. If the water is too hard it will leave behind stains which you will have to clean later. Secondly, this is one of the most important things you need to keep your eye on is the pressure of the water. Stay between 1200 and 1900 PSI and you will be fine. Next, you have to keep in mind is the type of nozzle. Make sure you are using a nozzle which will spread the water pressure and not focus it in one area. If this is not paid attention to you could chip off the paint of your car. And lastly, make sure to steer clear from pressure washing the rubber or plastic trims or they could fall off with the pressure of the water. Follow these simple points and you are good to go.