Last year I bought a new Suzuki Grand Vitara DDis. When I accelerated the vehicle for the first time after the first drive-in kilometers when I overtaked the third gear at ca 1850 rpm, I noticed at approx. 2000 rpm (that is the speed at which the 300Nm are attached) a short vibration and hum of the vehicle. The same repeated itself also in the fourth gear. Vibration is all the more powerful the more force has to be transferred from the engine to the wheels. (Mountain up, trailer up) It is also not a subtoury way of driving on my part, since the engine runs well at 1800 rpm, until at 2000 rpm use these vibrations. Who has the same experience with his DDis and who can tell me what can be the reason for this?