BMW launches all-new M3 sedan, M4 coupe: 431hp, 100kph in 4.3 seconds
BMW has released details on its all-new M3 sedan and its coupe counterpart, now known as M4. The highlight is a return to six-cylinder power, this time a twin-turbo unit. This is the first time that a turbo engine has been shoehorned by the factory into an M3. Power is 431hp, with torque of 550Nm available from 1850rpm, 40 percent more than the outgoing M3 V8. The engine car rev to 7600 rpm and is paired with either a six-speed manual or a seven-speed double-clutch transmission. The manual even blips the throttle on downshifts for smoother shifts. The 0-100kph sprint takes 4.3 seconds with the manual, or 4.1 seconds with the DCT, another blow for manual transmission fans.
An active rear differential with hollow output shafts uses electronically controlled multiple plates for maximum traction and stability. An M dynamic mode can be dialed up for more sideways action while retaining the electronic safety net.
The body uses a carbon-fiber roof to save weight. Aerodynamics are reportedly optimized to channel the air around the car, using the prominent front apron, rear lip spoiler, and trademark twin-stalk side mirrors. Carbon fiber is also used for the driveshaft and engine strut brace. We can expect the light and strong material to make its way to more BMW performance cars, as it is rapidly adding to its expertise with the all-carbon bodied i3.
Aluminum front control arms and a five-link rear axle save weight while imparting greater precision and stability. 19-inch wheels are standard for some markets. Effort of the electric power steering can be adjusted from Comfort to Sport+.
The BMW M3 has been in many ways the perfect fusion of sports car and practical sedan, the new M3 and M4 seem to uphold that very fast tradition. We expect the new cars to make their way to the Philippines in the first half of 2014.
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