Originally Posted by swamp2
This is not the case. BMW is doing this for cost savings. The big evil green infested goverments of the world are not forcing their hand. This has been extensively debated in some other threads. See this one
By 2016 the average fuel consumption of car manufacturers fleet has to be 56 mpg or something in the States. I know there is something like that in Germany and/or in the EU too. Might be even more strict. That's not possible with 500 HP naturally aspirated V10s. Turbo is a cheap way of using less gas and still delivering the power. But they are definitely also saving cash.