Hi, I have a brand-new Acura RDX and something's wrong with my engine. It started knocking and when I checked my engine specs on my navigation system, it said out loud "Your engine may not operate properly. Acceleration my be redused and the engine performance may be low. Limit your driving and have your dealer inspect your vehicle as soon as possible". What shuld I do?

You should exactly what the nav system said. Go to the dealership. You should have a warranty on it and doing it yourself would be a lot more complicated since there are so many electric parts.