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BMW M3/M4 Engines – 3.0 inline twin turbo

BMW disclosed yesterday some news that everyone is dying to hear… What engines are going in the in new M3’s and M4’s

The power will come from a brand new high revving inline-six 3.0-litre twin turbo engine outputting around 430 BHP at 7,500 rpm and a maximum torque of more than 500 Nm (369 lb-ft). So we know its not going to sound like the current v8 model, but the straight six from the previous e46 model sounded awesome as well.

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Aside from being more powerful, the new engine will enable the M3 to have a 25 percent lower fuel consumption and CO2 emissions. BMW mentions they were able to lower the M3 weight to less than 1,500 kg.

The newly developed S55 engine has a closed-deck crankcase design and comes with two mono-scroll turbochargers. BMW’s engineers implemented a forged crankshaft which is not only lighter but also more rigid and thanks to the diminished rotating masses it enables the engine to provide better acceleration and response.

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BMW M division chief, Freidrich Nitschke, hinted at an even lighter version tipping the scales at around 1,400 kg thanks to a more simplistic interior cabin, lightweight seats and other weight-saving techniques.

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