Watch the top 2015 BMW M3/M4 video of 2014

The new 2015 BMW M3/M4 dropped the V8 and went back to the inline six and BMW took some risks but they paid off for the Bavarian automaker. BMW knew it wouldn’t be an issue with M3 enthusiasts because the 3.0-liter powerplant is a proven engine from the brands performance M division. The new M4's twin-turbocharged inline-six-cylinder offers higher horsepower and more torque at a lower rpm, yet gets improved fuel economy and a favorable front/rear weight distribution.

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BMW went back in time and developed the new M4 with the high-revving six and still kept the original M3 philosophy. The M Power under the hood of the new 2015 M3/M4 is generated by a completely new six-cylinder inline engine. The 3.0 liter inline six-cylinder TwinPower Turbo engine produces a total output of 431 hp (317 kW), with a peak torque of 550 Nm (406 lb-ft). BMW says the Coupe will sprint from 0-100 km/h in 4.3 seconds with an electronically limited top speed of 250 km/h (155 mph). The M4 weights in at 3465 lb.

M4: an assassin in a finely tailored suit

Those of us who have driven the new M4 know it's like spending time with a sports car with two very different personalities. The M4 is a high-performance sports car that is just as comfortable driving you and a beautiful girl to a high-class State dinner with VIP dignitaries, as it is doing exceptional high-speed maneuvers on the Nurburgring race track. The M4 is a comfortable daily driver during the week that you can also take and drive hard on the weekends. The M4 employs race-car technologies and concepts into a daily driver.

Check out the 2015 BMW M3 Sedan (F80) and the first-ever BMW M4 Coupe (F82) official BMW launchfilm.