Pajero Problem Grumbling noise at 2000-2200rpm

[Michael]

Hi,
   My father gifted my a new Pajero. Car is well equipped with all the die-hard features. I know i'am a bit of rough driver but apart from it i maintain it a lot. The problem from which i was suffering was the Grumbling noise which i feel it produces at approx 2000-2200rpm. If someone with the same problem and hold solution to it please let me know how to fix it.

[Perks]

I don't have experience with this car but you should see your mechanic or rather service center asap as you said its a new car, it can be sign of some upcoming big fault. So don't ignore it and take action asap.