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Byline: GK
Tough emissions standards worldwide and soaring manufacturing costs in Germany are behind a decision by BMW to switch from high-revving, naturally aspirated engines in its M high-performance vehicles to turbocharged direct-injection powerplants, beginning as early as 2009.
The move will alter the character of BMW M models, and it raises questions about the immediate future of the M3's 4.0-liter V8 and the M5's 5.0-liter V10. Both engines will make way for forced-induction engines in coming years, according to high-ranking BMW sources.
The first M vehicle to make the move to a turbo powerplant is the X6 xDrive M. Due in June 2009, the X6 xDrive M will run the M division's new twin-turbo-charged V8. The engine also will power the next-generation M5, due in late 2010.
Based on the standard X6 xDrive 5.0i 4.4-liter V8, the twin-turbo unit reportedly matches the current M5's naturally aspirated ...
Source: HighBeam Research, BMW M'S TO GET REV REDUCTION.(NEWS)