Hello All,

I have observed that at around 2000 RPM the engine makes a boom sound for max 2 seconds while accelerating at around 35-45 KMPH.. It occurs most commonly in 4th gear but found this in 5th gear as well around the same RPM.

Avventura 2015 Model
1.4 L FIRE Petrol.

I am little worried. Pls guide if anyone else too had experienced the same or know about it. TIA.