I've got a Mondeo ST TDCI that's now done 52k miles, most of it by me, and it's started sounding quite clattery and rough from cold, although it does always start first time. It does stutter now and then on the road when cold as well.
It's not long had an oil change and I use Magnatec in it, it hasn't had a fuel filter for a long time though, could that be it, or could it be something else?
Anyone had a similar problem?