Very odd but if I am in auto and am stopped or going very slow, when I take my foot off the break there is a rattle as the car creeps forward, when I stuck it in semi auto mode it dosent do it,

Is this something I should be worried about? Car is a Cr diesel dsg vrs.

The rattle is only there when moving but as soon as I put my foot in the accelerator it then dissapears. It's been going on for sometime but I don't know if I am tuning into it but to me it seems to be getting louder/ more noticeable. Car has done 32000 motorway miles.

Could be a lose heat shield somewhere

Wouldn't that rattle if I was in N though? Good thought though, I didn't think of that, I was thinking of a gearbox problem?