The key feature of a jet pressure washer is its ability to generate high-pressure water jets. This feature is particularly advantageous for removing thick layers of grime, bird droppings, salt, and tar. The high pressure means that there is less need for scrubbing, which can scratch the paint. With the right nozzle and distance from the vehicle, a pressure washer can give your car a thorough clean without causing damage, making it a safe alternative when used correctly.