It is definitely possible for the X3 to be equipped with the incoming 2 liter petrol turbo engine, but it will not happen this year at least. According to "rumours", the 1 series will be the first to get this engine but I think the F30 will definitely comes with this highly anticipated engine. OOOO better watch out!!
As for our diesel quality, with the introduction of Euro 2M I have not heard of any problems and neither has any of the 320d owners complained of any issues. To further elaborate, Euro2M diesel has a maximum 500 ppm (parts per million) of sulphur content and all these diesel engines are built to Euro 3 requirements. Euro 3 diesel has a maximum of 350ppm and as such the diesel cars sold here have been mechanically and electronically tweaked by BMW to ensure problem free ownership. Prior to this our "unrated" diesel has 3000ppm sulphur content.
And hence if you intend to buy a diesel, please buy a local car and not grey imports. There are plenty grey imports that are stranded in East Malaysia and there is nothing the local dealers can do to settle it.
Cheers