Yaris making knocking noise

[Wass]

Hi all,

My first post please help/advise, I have brought a second hand Toyota Yaris T-Spirit 53 model and not expert in cars . When I drive over bumps, braking sometime or taking sharp right turns it makes knocking noise not sure if it's at front or back. I have been told that exhaust pipe is bent and hitting the chaise. I don't want replace exhaust and then find out it's something else causing the problem. Anyone come across anything like this.

Any help greatly appreciated.