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I don't get why BMW didn't offer up a direct-inject, naturally aspirated 6-cylinder power plant before going this route. Seems to me that, with DI, you can get the compression ratio up to 12 or 13:1 without difficulty and therefore get a nice bump in torque and efficiency and you keep the legend alive.
I am quite tempted by Mercedes' 3.5 liter CGI V6 and that is saying a lot as I am a die-hard BMW guy and have been since I was 4 years old! That V6 is a very nice power plant and still quite efficient.
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