The E46 M3’s 3.2-liter straight-six, one of the seamless, extremely driver-friendly powerplants, is now going to be retired. Although the new 2010 Bmw Z4 will utilize inline-six powerplants, starting from a 2.5-liter 201 hp to a 302 hp twin-turbo 3.0-liter, it won’t be receiving the 343 hp naturally aspirated 3.2-liter unit. That points to the fact that the ancient Z4, which has lately gone out of production, was the last production Bmw to employ the renowned engine.
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