If my Cooper S has been stood a long time, as I start it up, I get what I would call a knocking bottom end for a second or two. It's almost as if there's no oil on the crank etc. This shouldn't happen on a brand new car, or is it yet another 'feature' of the Mini?
Also, what MPG (UK) are you getting? I reckon about 30mpg around town & a bit of motorway.
BTW, my MCS has done 700 miles & is 3 weeks old.
Cheers
Nige