PS and NM are two words that are used in the automotive world to define power and speed. Here, PS is a German word which means Pferdestärke -the equivalent of horsepower or Torque, the actual power produced by the engine. And NM stands for Newton Meter which is a unit in SI and is the standard way of expressing the same horsepower produced or torque produced by the engine.
As of now, there's no update from the brand's end regarding the price of Bugatti Chiron. We would suggest you to wait for the car to launch. Stay tuned for further updates. Follow the link to get an alert when Bugatti Chiron is launched.