2009 Citroen C5 2.0 HDI 16V - Citroen C5 annoying vibration at 2000 RPM - NIKB44

I have recently bought this car, 46k on the clock.

Whilst accelerating, I notice an annoying rattle / vibrating noise that you hear when using the throttle in any gear between 1800 - 2000 RPM.

Any idea as to what is causing this problem ?

Thanks

Nick

2009 Citroen C5 2.0 HDI 16V - Citroen C5 annoying vibration at 2000 RPM - Armitage Shanks {p}

Shot in the dark - loose exhaust baffles?