Realizing my petrol days are numbered I test drove the a$$ holes choice of car... the BMW coupe (2008)... 325d M Sport... did not sound diesel at all... very well isolation of sound and vibration... more like a 6 pot petrol... so I'm an Audi boy... and I am planning on staying Audi rather than going to the dark side... how does the A5 2.7 TDi fair up? Is it a smooth drive and not diesel like at all? Or is a noisy rattle box? Any advice appreciated... looking at a used 2009 model with 110k on the clock, 2.7 TDI multi-tronic. Cheers.