As we learned in Munich, the M3 will be powered by a twin-turbo inline-six, good for 430 hp. The new powerplant will reside in a chassis that's lighter and stiffer than the outgoing car. The M3's diet is helped by upgraded parts, like a carbon driveshaft and a magnesium oil sump.
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With so few surprises left on the table, it's still fun to see the undisguised car on the open road. In this case, filming on closed roads in California. Expect the car's next official appearance to come at the Detroit auto show in January.